JP4377895B2 - Distribution system monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a correspondence capable to the occurrence time of a trouble and system switching or the like in advance capable, by analyzing right or wrong and the like of power transmission relating to a sound power interruption interval when the trouble occurs for the present load condition. <P>SOLUTION: Referring to a system data base 14, from a load of a distribution line input from a remote supervisory control unit 10, the load of each interval belonging to the distribution line is generated in an interval load data storage area 13, additionally extraction 15 of a trouble occurrence interval is executed with possibility capable of generating a power transmission procedure to the sound power interruption interval except a trouble interval when the trouble occurs, to make an analysis objective system 16. Relating to each of this interval, on the basis of an interval load data of the interval load data storage area 13, analysis 17 is performed of right or wrong of generation of the power transmission procedure satisfying a voltage/current condition, and this analyzed result is displayed in a display device 20. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a distribution system monitoring apparatus that monitors a distribution system.

  The monitoring of the power distribution system has been conventionally performed in combination with a remote monitoring control device. FIG. 37 shows a configuration diagram of a conventional distribution system monitoring device, which monitors the current system state based on monitoring information such as the voltage and current of the distribution line input from the remote monitoring control device 10. . That is, based on the monitoring information such as the voltage and current of the distribution line input from the remote monitoring control device 10 and the information such as the distribution system configuration from the system database 11 and the contract load of each section, the section load creating means 12 Section load data is created and stored in the section load data storage area 13. Then, the system monitoring means 371 translates it into a form that can be understood by the human system and displays it on the display device 20 via the analysis result display means 19.

  However, the analysis of the monitoring information is as simple as the capacity of each device that makes up the power distribution system, and the current excess of each device has not exceeded when the current value is taken in. We were monitoring.

  Further, in the harmonic monitoring of the distribution system, only the harmonic measurement value is monitored by the data input from the remote monitoring control device 10. Moreover, in the voltage monitoring of the distribution system, only the transmission voltage of the distribution line is monitored by the data input from the remote monitoring control device 10.

  In the conventional power distribution system monitoring device 11, the analysis of the information from the remote monitoring control device 10 is a simple one that exceeds the capacity of each device of the power distribution system. It was not possible to analyze the possibility of power transmission to the sound power outage section at the time of occurrence. For this reason, human arrangements during major disasters such as typhoons and prior system switching have been left to intuitive human judgment.

  Conventionally, the current excess of each device is checked at the time of current excess or at the time of interchange calculation. If it is not at that time, the situation regarding current excess cannot be determined. Therefore, it was not possible to take measures against the prediction of excess current in advance.

  Moreover, the harmonic monitoring of the distribution system and the voltage monitoring of the distribution system are limited to monitoring only the harmonic measurement value and monitoring only the distribution voltage of the distribution line based on the data input from the remote monitoring control device 10. The actual situation was managed only by the results. For this reason, analysis related to customer information having harmonic generators cannot be performed, and current section voltage analysis, terminal voltage drop and voltage rise analysis due to the ferrant effect cannot be performed. It was left to the judgment of the system.

  In view of such points, the present invention analyzes the current load situation, such as whether power transmission is possible for a healthy power outage section when an accident occurs, and responds to the occurrence of an accident, prior system switching, etc. Analyzes related to customer information with harmonic generators, current section voltage analysis, terminal voltage drop, and voltage rise analysis due to the Ferrant effect, etc. are performed in association with the system configuration. An object of the present invention is to provide a power distribution system monitoring device that can give simple instructions.

The distribution system monitoring apparatus according to claim 1 of the present invention relates to a harmonic database of a customer having a system database that stores the capacity and connection state of each device constituting the distribution system, and a harmonic generation device existing on the distribution system. The harmonics of the distribution lines input from the remote monitoring control device according to the customer harmonic related device information database storing the device information, the system configuration data of the system database and the harmonic related device data of the customer harmonic related device information database Harmonic information for each section created by the section-specific harmonic information creating means for creating section-specific harmonic information data for each section belonging to the distribution line from the measured wave values, and the section-specific harmonic information creating means. Compare with the harmonic reference value determined by the current system configuration of each section stored in the system database, and judge whether it is within the range of the operational reference value The harmonic analysis means for analyzing the current harmonic information of each section, characterized in that it comprises an analysis result display means for displaying an analysis result data generated by the harmonic analysis means on the display device.

  According to this distribution system monitoring device, the section-specific harmonic information creating means receives harmonic measurement value data of each distribution line inputted at a fixed period from the remote monitoring control device, and the system database and customer harmonic related device information Referring to the database, the harmonic information for each section is stored in the harmonic information data for each section. Then, the harmonic analysis means compares the harmonic information data for each section with the harmonic reference value determined in the current system configuration of each section stored in the system database, and determines whether it is within the range of the operational reference value. The analysis result data is stored in the analysis result data storage area 18 and displayed on the display device. Therefore, in the harmonic monitoring of the distribution system, it is not necessary to monitor only the harmonic measurement values by the data input from the remote monitoring control device, but to link the system configuration with the customer information having the harmonic generation device. Analysis, and can take appropriate measures based on the analysis results.

The distribution system monitoring device according to claim 2 of the present invention is input from the remote monitoring control device according to the system database storing the capacity and connection state of each device constituting the distribution system, and the system configuration data of this system database. Section load creating means for creating, as section load data, the load of each section belonging to the distribution line from the load of the distribution line, and the section storing the voltage of the main section belonging to the distribution line input from the remote monitoring control device The voltage database, the section load data created by the section load creation means, the current section voltage obtained based on the section voltage data of the section voltage database, and a preset operation reference voltage are compared. Section voltage analysis means, and section voltage analysis display means for displaying section voltage analysis data of the section voltage analysis means on a display device And wherein the door.

  According to this distribution system monitoring apparatus, while referring to the system database, the load of each section belonging to the distribution line is created as section load data from the load of the distribution line input from the remote monitoring control apparatus, while the remote monitoring control The voltage data of the main section belonging to the distribution line input from the device is obtained. Then, each current section voltage is analyzed from the system configuration of the system database and the section voltage data of the section voltage creating means, and displayed on the display device. Therefore, not only the voltage monitoring based on the data input from the remote monitoring and control device, but also the current load status, the voltage at the main point, and the system configuration can be taken into consideration to compare and monitor the voltage of each section with the operation reference voltage It is extremely effective for monitoring and operating the distribution system.

The distribution system monitoring apparatus according to claim 3 of the present invention is input from the remote monitoring control apparatus according to the system database storing the capacity and connection state of each device constituting the distribution system and the system configuration data of the system database. Load data storage means for storing the load of each section belonging to the distribution line, the passing current of each switch as load data from the load of the distribution line, and each device obtained based on this load data and system database Load analysis means for comparing the current load value with a preset allowable load value, and storing the comparison result as analysis result data, and load status display means for displaying the analysis result data on a display device It is characterized by always displaying the margin of the electrical capacity of each device with respect to the current system load.

  According to this distribution system monitoring device, referring to the system database, the load of each section belonging to the distribution line and the passing current of each switch are stored as load data from the load of the distribution line input from the remote monitoring control device The load status of each device is analyzed based on the load data and the grid database, and reserve power (= allowable load value−current load value) is obtained as the analysis result data. Always display the capacity margin. Therefore, not only monitoring by data input from a remote monitoring control device, but also the current load status and system configuration can be taken into account, so the reserve capacity can be accurately grasped, which is extremely effective for monitoring and operating the distribution system. It is.

  The distribution system monitoring device according to claim 4 of the present invention is input from the remote monitoring control device according to the system database storing the capacity and connection state of each device constituting the distribution system and the system configuration data of this system database. Section load creation means for creating the load of each section belonging to the distribution line as section load data from the load of the distribution line, and a branch section group without a connection switch arranged in a tree form in the distribution system Analytical system extraction means to extract accident occurrence sections where transmission procedure to branch section group can not be created, and section load data of each branch section group is more than a certain amount of load that set a certain standard, and it is critical when an accident occurs System analysis means for determining whether or not there is a problem in supply and storing in analysis result data, and analysis result display means for displaying the analysis result data on a display device To.

  According to this distribution system monitoring device, the load of each section belonging to the distribution line is created as section load data from the distribution line load input from the remote monitoring and control apparatus with reference to the system database, and connected in the distribution system. A branch section group without a system switch and an accident occurrence section where a power transmission procedure to this branch section group cannot be created are extracted. The section extracted by this analysis target system extraction means is stored, and for the branch section group without the stored interconnection switch, the section load of the section load data is equal to or more than a load amount that defines a certain reference, Analyze whether a serious supply hindrance occurs in the event of an accident. An analysis result display means for displaying the analysis result data on the display device is provided. Therefore, in the distribution system operation, when the load exceeds a certain load in the branch section group without the interconnection switch, the branch section group and the accident section that cannot transmit power due to the occurrence of an accident are displayed. Therefore, it is extremely effective for monitoring and operation of the distribution system.

  The distribution system monitoring device according to claim 5 of the present invention is input from the remote monitoring control device according to the system database storing the capacity and connection state of each device constituting the distribution system and the system configuration data of this system database. Section load creation means that creates the load of each section belonging to the distribution line as section load data from the load of the distribution line, and the operator sets the assumed accident occurrence section arbitrarily from the display device, and the accident section setting data Accident section setting means to be stored in the distribution system, analysis target system extraction means for extracting a branch section group having no interconnection switch arranged in a tree form in the distribution system, and section load data of each branch section group is constant If the load exceeds the standard, and if an accident occurs in the accident section assumed in the accident section setting data, it will be determined whether there will be a serious supply hindrance and the analysis result data And phylogenetic analysis means for storing, characterized in that it comprises an analysis result display means for displaying the analysis result data to the display device.

  According to this distribution system monitoring device, the system database is referred to, the load of each section belonging to the distribution line is created as section load data from the load of the distribution line input from the remote monitoring control device, and the assumed accident occurs The section is arbitrarily set by the operator from the display device, stored in the accident section setting data, and a branch section group having no interconnection switch is extracted. Then, for the branch section group without the interconnection switch, determine whether the section load of the section load data exceeds a certain amount of load that defines a certain standard, and whether it will cause a serious supply hindrance when an accident occurs, and analyze The result data is saved and displayed on the display device. Therefore, based on the accident section arbitrarily set by the operator, the branch section group and the accident section that cannot transmit power due to the occurrence of an accident when the branch section group without the interconnection switch exceeds a certain load is displayed. Therefore, the reserve capacity can be accurately grasped in consideration of the load situation and the system configuration, and it is extremely effective for monitoring and operating the distribution system.

  According to the distribution system monitoring device of claim 1, the current harmonic information of each section is analyzed, and there is a possibility of deviating from the range of the harmonic value of the operation standard, and the customer harmonics included therein It is possible to notify the operator of related equipment information in advance, and efficient distribution line operation is possible.

  According to the distribution system monitoring device of the second aspect, it is possible to analyze the current voltage of each section and notify the operator in advance of a section where the section voltage may deviate from the range of the operation reference voltage. Efficient distribution line operation is possible.

  According to the power distribution system monitoring device of claim 3, it becomes possible to notify the operator of a section where a large-scale power outage accident occurs due to the occurrence of the accident before the accident occurs, and it is efficient at the time of a large-scale disaster such as a typhoon. It is possible to support human layout and design of efficient equipment expansion work.

  According to the power distribution system monitoring device of claim 4, it becomes possible to notify the operator of the branch section group that becomes a large-scale power outage accident due to the occurrence of the accident and the section where the accident has occurred before the occurrence of the accident. It will be possible to support efficient personnel assignment at the time of a large scale disaster and design of efficient facility expansion work.

  According to the distribution system monitoring device of the fifth aspect, it is possible to confirm in advance a branch section group that becomes a large-scale power outage accident due to an accident occurrence in an accident section arbitrarily set by an operator. As a result, it is possible to support efficient human allocation to important branch sections at the time of an accident and design of efficient facility reinforcement work.

  According to the distribution system monitoring device according to claim 6, in the standard operation of the distribution system, by displaying whether the supply facilities on both sides of the interconnection switch are different systems or the same system, an efficient facility enhancement work Design support is possible.

  According to the distribution system monitoring device of the seventh aspect, in the standard operation of the distribution system, by displaying whether the supply facilities on both sides of the interconnection switch arbitrarily set by the operator are different systems or the same system Therefore, it is possible to support the design of efficient equipment expansion work.

  According to the distribution system monitoring device of claim 8, since the connection state between the distribution lines in the current system state is the same system or a different system, it is possible to know an efficient person at the time of a large-scale disaster such as a typhoon. It is possible to support the design of efficient layout and efficient facility expansion work.

  According to the distribution system monitoring device of the ninth aspect, in the current system state, it is possible to know whether the connection between the distribution lines of the connection switch arbitrarily set by the operator is the same system or a different system. Therefore, it is possible to support efficient personnel arrangements in the case of a large-scale disaster such as a typhoon and design of efficient facility reinforcement work.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a distribution system monitoring apparatus 11 according to a first embodiment of the present invention. The distribution system monitoring device 11 in FIG. 1 includes a system database 14 that stores the capacity and connection state of each device such as a substation, bank, distribution line, high voltage line, switch, voltage regulator, etc. that constitute the distribution system. Section load creation means 12 for creating a load of each section belonging to the distribution line in the section load data storage area 13 from the load of the distribution line input from the remote monitoring control device 10 with reference to the system database 14, and the occurrence of an accident Sometimes, an analysis target system extraction means 15 for extracting an accident occurrence section that may make it possible to create a power transmission procedure to a healthy power outage section other than the accident section by a device switching operation, and the analysis target system extraction means 15 The analysis target system database 16 that stores the sections that have been processed, and each section stored in the analysis target system database 16 by the section load creation means 12 Based on the generated section load, analysis of whether or not a power transmission procedure satisfying the voltage condition and the current condition can be created, and system analysis means 17 for storing the analysis result in the analysis result data storage area 18, and the analysis result data storage An analysis result display means 19 for displaying the analysis result data of the area 18 on the display device 20 is provided.

  The section load data storage area 13 means means for storing section load data, and the analysis result data storage area 18 means means for storing analysis result data. This expression method is the same not only in the present embodiment but also in other embodiments, and is similarly used throughout this specification.

  Then, the section load creating means 12 receives the load data of each distribution line input from the remote monitoring control device 10 at regular intervals. Then, the section load creating means 12 refers to the system database 14, extracts the standard load of the section belonging to the distribution line, apportions the load data of the distribution line by the standard load, and stores it in the section load data storage area 13. To do.

  The analysis target system extraction means 15 extracts a section to be analyzed and stores it in the analysis target system database 16. Here, the section to be analyzed is a section that can take a plurality of supply paths on the system, and is a group of sections excluding a continuous branch section without a connection point on the system, that is, It means a section that can take a plurality of supply routes.

  A conceptual diagram of the system to be analyzed is shown in FIG. In this figure, FCB is a power supply circuit breaker of the distribution line. Load data (voltage, current, etc.) of this power supply circuit breaker FCB is measured and sent from the remote monitoring control device 10 to the power distribution system monitoring device 11. In the figure, SW1 to SW8 are normally closed section switches, and SWt1 is a normally open section switch provided for interconnection with other lines. In this figure, a section indicated by a bold line is an analysis target section (that is, a section that can take a plurality of supply paths on the system), and a section indicated by a thin line is a section that is not an analysis target (no connection point on the system). A branch-like section that keeps going).

  FIG. 3 shows an algorithm for extracting an analysis target section. First, distribution lines of all systems included in the system database 14 are obtained in a distribution line listing process S301.

  The following processes are sequentially repeated for all the distribution lines listed (S302).

  That is, in the all interconnection switch list-up process S303, the interconnection switch of the distribution line is obtained from the system database 14. FIG. 4 shows the algorithm. The power supply circuit breaker FCB of the distribution line is obtained from the system database 14 (S401), and the load side section of the power supply circuit breaker FCB is obtained (S402). Thereafter, the next process is repeated until there is no load side section (S403). The load-side switch of the section is obtained (S404). If this load-side switch is the linkage switch SWt1, it is stored as the linkage switch SWt1 (S405). Otherwise, the load side that is the next search destination A load side section of the switch is obtained (S406). In this way, all interconnection switches SWt are listed.

  Next, after the interconnection switch SWt is obtained, the supply route search process (S304) is performed for each interconnection switch, the group of sections on the supply route is listed, and the analysis target system is set as the analysis target section. Save in the database 16 (S305).

  Next, the system analysis means 17 analyzes whether or not a supply procedure can be created when an accident occurs, using the algorithm shown in FIG. 5 for the section group stored in the analysis target system database 16. That is, the following processing is performed on all sections stored in the analysis target system database 16 (S501). The said analysis object area is temporarily set as an accident area, the system state which made the load side the blackout area is created (S502), and an interchange procedure is created (S503). Regarding the creation process of the accommodation procedure, refer to the system state data storage area 61, the section load data storage area 13, and the system database 14 as shown in the input / output conceptual diagram of the accommodation procedure creation process in FIG. Then, a procedure creation process 1052 for accommodation is applied to obtain the accommodation procedure result (1053). The accommodation procedure result obtained in this way is stored (S504). Various procedures can be adopted as the procedure creation processing 1052 for accommodation. For example, the procedures disclosed in JP-A-5-199656, JP-A-6-189454, etc. can be used. it can.

  Whether or not the interchange procedure can be created is determined from the result of the interchange procedure creation process. Whether or not a supply procedure can be created in the event of an accident indicates the strength and weakness of the system.

  In order to make the analysis result known, the analysis result display means 19 displays the analysis result data in the analysis result data storage area 18 in a table format on the display device 20, or based on the map information included in the system database 14. In addition, the section in which the inability to be interchanged is displayed on the distribution line diagram by changing the section and color that can be accommodated.

  Control of these distribution system monitoring devices is achieved by a computer (not shown), and a control program for the control is stored in a storage medium. Here, the storage medium may be a memory connected to the computer or various types of memory built in the computer, all of which mean a computer-readable storage medium.

  According to this embodiment, referring to the system database 14, from the load of the distribution line input from the remote monitoring control device 10, the load of each section belonging to the distribution line is created in the section load data storage area 13, Accident occurrence sections that may be able to create a power transmission procedure to a healthy power outage section other than the accident section when an accident occurs are extracted 15 and set as an analysis target system 16. For each section, based on the section load data in the section load data storage area 13, whether or not a power transmission procedure that satisfies the voltage condition and the current condition is created is analyzed 17 and the analysis result is displayed on the display device 20. Therefore, the strength of the system with respect to the current load, that is, whether or not the power transmission to the healthy power outage section at the time of the accident is known in advance, so that it is possible to allocate personnel in the event of a major disaster such as a typhoon, or to perform system switching in advance Therefore, it is extremely effective for monitoring and operating the distribution system.

  FIG. 7 is a configuration diagram of the distribution system monitoring apparatus 11 according to the second embodiment of the present invention. The distribution system monitoring device 11 of FIG. 7 includes a system database 14 for storing the capacity and connection state of each device such as a substation, a bank, a distribution line, a high voltage line, a switch, and a voltage regulator that constitute the distribution system. Section load creation means 12 for creating a load of each section belonging to the distribution line in the section load data storage area 13 from the distribution line load input from the remote monitoring control device 10 with reference to the system database 14, and a display device 20, the accident section setting means 21 for storing the accident section arbitrarily set by the operator in the accident section setting data storage area 22, and the section load creating means for the accident section stored in the accident section setting data storage area 22 12 is analyzed to determine whether or not a power transmission procedure that satisfies the voltage and current conditions can be created, and the analysis result is stored in an analysis result data storage area. A system analysis unit 17 to be stored in 18, has an analysis result display unit 19 for displaying the analysis result data of the analysis result data storage area 18 on the display device 20.

  The section load creating means 12 receives load data of each distribution line that is input from the remote monitoring control device 10 at regular intervals. The section load creating means 12 refers to the system database 14, extracts the standard load of the section belonging to the distribution line, apportions the distribution line load data by the standard load, and stores it in the section load data storage area 13. The accident section setting means 21 stores an accident section (any number of sections) arbitrarily set by the operator from the display device 20 in the accident section setting data storage area 22. The system analysis means 17 analyzes the strength of the system, that is, whether or not a supply procedure can be created when an accident occurs, with respect to the accident section stored in the accident section setting data storage area 22 using the algorithm shown in FIG.

  In FIG. 8, first, an accident section stored in the accident section setting data storage area 22 and a system state in which the load side is a power outage section are created (S801). An interchange procedure is created with reference to this system state and the section load data storage area 13 (S802). The method for creating the accommodation procedure is performed by the method disclosed in the above-mentioned JP-A-5-199656, JP-A-6-189454, or the like, or a method having an equivalent function.

  As a result of the processing for creating the accommodation procedure, it is determined whether or not the accommodation procedure can be created. FIG. 9 shows a conceptual diagram of input / output of the accommodation procedure creation process (the description is omitted because it is similar to FIG. 105 described above). The result of the accommodation procedure creation processing is stored in the analysis result data 18 (S803). The analysis result display means 19 displays the analysis result data in the analysis result data storage area 18 on the display device 20 in a table format. In addition, based on the map information included in the system database 14, sections where incompatibility occurs and sections where it does not occur are color-coded and displayed on the distribution line map.

  According to this embodiment, the load of each section belonging to the distribution line is created in the section load data storage area 13 from the distribution line load input from the remote monitoring control device 10 with reference to the system database 14. Then, the accident section arbitrarily set by the operator from the display device 20 is stored in the accident section setting data storage area 22, and the voltage condition and the current condition are satisfied for the accident section based on the set section load 12. Analyzes 17 whether or not a power transmission procedure can be created. The analysis result data is stored in the analysis result data storage area 18 and displayed on the display device 20. Therefore, the strength of the system with respect to the current load, that is, whether or not the power transmission to the healthy power outage section at the time of the accident can be confirmed for the section intended by the operator. Arrangement or advance system switching can be performed, which is extremely effective for monitoring and operation of the distribution system.

  FIG. 10 is a configuration diagram of a power distribution system monitoring apparatus 11 according to the third embodiment of the present invention. In FIG. 10, the distribution system monitoring device 11 is connected to the remote monitoring control device 10, and a harmonic measurement value of the distribution line is input from the remote monitoring control device 10. And the system database 14 which memorize | stores the capacity | capacitance and connection state of each apparatus, such as a substation, a bank, a distribution line, a high voltage line, a switch, and a voltage regulator which comprise a distribution system, and the harmonic generation which exists on a distribution system The customer harmonic related device information database 33 storing the harmonic related device information of the customer who has the device, the system database 14 and the customer harmonic related device information database 33 are referred to, and input from the remote monitoring control device 10. Sectional harmonic information creating means 31 for creating the harmonic measurement value of each section belonging to the distribution line from the harmonic measurement value of the distribution line in the section-specific harmonic information data storage area 32, and the section-specific harmonic information From the data storage area 32, the system database 14 and the customer harmonic related equipment information database 33, each section stored in the system database 14 The harmonic analysis means 34 for analyzing the harmonic information of the standing, and a analysis result display unit 19 for displaying the analysis result data generated by the harmonic analysis means 34 to the display device 20.

  The section-specific harmonic information creating means 31 receives the harmonic measurement value data of each distribution line inputted from the remote monitoring control device 10 at a fixed period, refers to the system database 14 and the customer harmonic related equipment information database 33, The harmonic information for each section is stored in the section-specific harmonic information data storage area 32.

  The harmonic analysis means 34 receives the section-specific harmonic information data stored in the section-specific harmonic information data storage area 32 and stores the section-specific harmonic information data in the current section database stored in the system database 14. Compare with the harmonic reference value determined by the system configuration. Then, it is determined whether the harmonic information for each section is within the range of the operational reference value, and when it is outside the range of the reference value, it is stored in the analysis result data storage area 18. Then, the analysis result data in the analysis result data storage area 18 is displayed on the display device 20 together with the customer harmonic related device information on the conceptual diagram of the system to be analyzed.

  The algorithm of the harmonic analysis means 34 is shown in the harmonic information analysis processing flowchart of FIG. 11, and a conceptual diagram of the system to be analyzed is shown in FIG.

  First, in FIG. 12, FCB is a power supply circuit breaker of the distribution line, and harmonic data of this power supply circuit breaker FCB is measured and sent from the remote monitoring control device 10 to the power distribution system monitoring device 11. In the figure, SW1 to SW10 are normally closed type segment switches, and in particular, SW indicated by a double square indicates an analysis unit section. This analysis unit section is arbitrarily determined as necessary, but is simply expressed as a section in the following description. SWt1 is a normally open type division switch provided for interconnection with other lines. HC indicates a customer who owns the harmonic generator.

  In the harmonic information analysis processing flowchart of FIG. 11, the number of distribution lines in all the systems included in the system database 14 is obtained in the distribution line listing process (S1101). And the process below the number of all the distribution lines is repeated (S1102).

  That is, the assigned switch / section of the distribution line is extracted from the system database 14 to obtain the section (S1103). Next, for the number of switches belonging to all sections, the harmonic reference value based on the associated switch information and the section harmonic information data in the section harmonic information data storage area 32 are compared, It is determined whether the harmonic information data for each section is within the operational reference value range (S1104) (S1105). If the result of this comparison / judgment is outside the reference value range, the result and the measured value data are stored in the analysis result data storage area 18 (S1106).

  Then, using the customer harmonic related device information database 33, the customer harmonic related device information for each section is stored in the analysis result data storage area 18 for each section (S1107). Then, the analysis result data in the analysis result data storage area 18 is displayed on the display device 20 together with the customer harmonic related device information Hc on the conceptual diagram (FIG. 12) of the system to be analyzed. As a display mode in this case, the analysis result data may be further displayed in a tabular format on the display device 20, or the sections are color-coded according to the difference from the operational reference wave on the distribution line diagram. Can be displayed. .

  According to this embodiment, the per-section harmonic information creating means 31 receives the harmonic measurement value data of each distribution line input from the remote monitoring control device 10 at regular intervals, and receives the system database 14 and the customer harmonic related equipment. With reference to the information database 33, the harmonic information for each section is stored in the section-specific harmonic information data storage area 32. Then, the harmonic analysis means 34 compares the section harmonic information data in the section harmonic information data storage area 32 with the harmonic reference value determined in the current system configuration of each section stored in the system database 14. . Then, it is determined whether the harmonic information for each section is within the range of the operational reference value, and the analysis result in the analysis result data storage area 18 is displayed on the conceptual diagram of the system to be analyzed as to the customer harmonic related data. The information is displayed on the display device 20 together with the device information. Therefore, in the harmonic monitoring of the power distribution system, the data input from the remote monitoring and control device 10 does not simply monitor the harmonic measurement value, but has a relationship between the system configuration and customer information having the harmonic generation device. Analysis can be performed and appropriate measures can be taken based on the analysis results.

  FIG. 13 is a configuration diagram of a power distribution system monitoring apparatus 11 according to the fourth embodiment of the present invention. In FIG. 13, the distribution system monitoring device 11 includes a system database 14 for storing the capacity and connection state of each device constituting the distribution system such as a substation, bank, distribution line, high voltage line, switch, voltage regulator, and the like. Referring to the system database 14, section load creating means 12 for creating the load of each section belonging to the distribution line in the section load data storage area 13 from the load of the distribution line input from the remote monitoring control device 10, and remote monitoring The section voltage creating means 41 for storing the voltage of the main section belonging to the distribution line input from the control device 10 in the section voltage data storage area 42, the system configuration of the system database 14, and the section voltage data in the section voltage data storage area 42 From the section voltage analysis means 43 for analyzing each current section voltage, and the section for storing the section voltage created by the section voltage analysis means 43 A pressure analysis data storage area 44 has a section voltage analysis display means 45 for displaying the section voltage analysis data of this leg voltage analysis data storage area 44 on the display device 20.

  The section load creating means 12 receives load data of each distribution line that is input from the remote monitoring control device 10 at regular intervals. The section load data 12 refers to the system database 14, takes out the standard load of the section belonging to the distribution line, apportions the distribution line load data by the standard load, and stores it in the section load data storage area 13.

  The section voltage creation means 41 receives the voltage data of the main switch of each distribution line inputted from the remote monitoring control device 10 at a fixed period, and stores it in the section voltage data storage area 42. Here, the main switch of the distribution line is the first switch in the direction of each line at the point where the load after branching is relatively large among the points where the trunk line on the system branches, and the interconnection switch with different lines , And switches before and after the voltage regulator installation point.

  The algorithm of this section voltage analysis means 43 is demonstrated with reference to the section voltage analysis process flowchart of FIG.

  First, in the distribution line listing process S1401, the number of distribution lines in all the systems included in the system database 14 is obtained. The following process is repeated for all the distribution lines (S1402). That is, the switch / section of the distribution line is obtained from the system database 14 (S1403), the power supply side switch is searched for all sections, and the nearest section among the sections stored in the section voltage data storage area 42 is searched. Is a section block of the switch (S1404).

  The section impedance of the section belonging to the section block unit is taken out from the system database 14, and the end voltage of each section is calculated by the following formula with reference to the section load data storage area 13 and the section voltage data storage area 42 (S1406). . The terminal voltage to be calculated is V, the switch measurement voltage is V0, the load-side sections in the route to each terminal are numbered 1 to N, the load-side section current is Ii, and the load-side section impedance is Ri. Then, V = V0−Σ (Ii × Ri), where i is 1 to N and Σ represents the sum of Ii × Ri. The passing current Ii in the load side section in this equation is the sum of the section load data (amperes) in the load side section of the section.

  The terminal voltage calculated in this way is stored in the section voltage analysis data storage area 44 (S1407), and this process is repeated for the number of section blocks (S1405).

  The section voltage analysis display means 45 displays the section voltage analysis data in the section voltage analysis data storage area 44 obtained as described above on the display device 20 in a table format. Moreover, based on the map information contained in the system | strain database 14, a section is color-coded according to the difference from the operation reference voltage of a section voltage, and it always displays on a distribution line map.

  According to this embodiment, while referring to the system database 14, the load of each section belonging to the distribution line is created in the section load data storage area 13 from the load of the distribution line input from the remote monitoring control device 10. The voltage data 42 of the main section belonging to the distribution line input from the remote monitoring control device 10 is obtained. Then, each current section voltage is analyzed 43 from the system configuration of the system database 14 and the section voltage data in the section voltage data storage area 42 and displayed on the display device 20. Therefore, not only the voltage monitoring based on the data input from the remote monitoring control device 10, but also the current load status, the voltage at the main point, and the system configuration are taken into consideration, and the voltage of each section is compared and monitored with the operation reference voltage. It is extremely effective for monitoring and operating the distribution system.

  FIG. 15 is a configuration diagram of a power distribution system monitoring apparatus 11 according to the fifth embodiment of the present invention. In FIG. 15, the distribution system monitoring device 11 includes a system database 14 for storing the capacity and connection state of each device constituting the distribution system such as a substation, bank, distribution line, high voltage line, switch, voltage regulator, and the like. Referring to the system database 14, load data storage for storing the load of each section belonging to the distribution line and the passing current of each switch in the load data storage area 52 from the load of the distribution line input from the remote monitoring control device 10 Based on the means 51, load analysis means 53 for analyzing the load state of each device based on the load data storage area 52 and the system database 14 and storing it in the analysis result data storage area 18, and the analysis result data storage area 18 It has an analysis result display means 19 for displaying the analysis result data on the display device 20, and always displays the margin of the electrical capacity of each device with respect to the load of the current system. To.

  The load data storage unit 51 receives the load data of each distribution line and switch input from the remote monitoring control device 10 at regular intervals and stores them in the load data storage area 52. The load data is configured as shown in FIG. The load data storage area 52 is updated only when there is a change in load, and an update flag is set for the updated data.

  The load analysis unit 53 checks the allowable load for each device from the updated data in the system database 14 and the load data storage area 52 and stores the result in the analysis result data storage area 18. In this load analysis, as shown in the flowchart of FIG. 17, it is determined based on the update flag whether load data has been updated for the number of devices of the distribution line (distribution line, switch, etc.) (S1702). Then, reserve capacity calculation is performed for the load data that has been updated (S1703). This reserve capacity calculation is calculated as the difference between the allowable load value of the device and the current load value, and the analysis result of the reserve capacity is expressed as time series (time, day, monthly) data in the format shown in FIG. It is stored (S1704).

  The analysis result display means 19 displays the analysis result on the display device 20 based on the analysis result data in the analysis result data storage area 18. As the display mode, as shown in FIG. 19, reserve power display for each device (eg, 60A, etc.) on the system diagram, color change according to reserve power, display in time series for each device by graph display, etc. It can be performed.

  According to this embodiment, referring to the system database 14, the load of each section belonging to the distribution line from the load of the distribution line input from the remote monitoring control device 10 and the passing current of each switch are shown in the load data storage area. 52, the load state of each device is analyzed based on the load data storage area 52 and the system database 14, and reserve power (= allowable load value−current load value) is obtained in the analysis result data storage area 18. The margin of electrical capacity of each device with respect to the current system load is always displayed. Therefore, the reserve capacity can be accurately grasped not only by monitoring by data input from the remote monitoring and control device 10 but also by taking into account the current load status and system configuration, which is extremely useful for monitoring and operation of the distribution system. It is valid.

  FIG. 20 is a configuration diagram of a distribution system monitoring apparatus 11 according to the sixth embodiment of the present invention. In FIG. 20, the distribution system monitoring device 11 includes a system database 14 for storing the capacity and connection state of each device constituting the distribution system such as a substation, bank, distribution line, high voltage line, switch, voltage regulator, and the like. A section load creating means 12 that creates a load of each section belonging to the distribution line in the section load data storage area 13 from the distribution line load input from the remote monitoring control device 10 with reference to the system database 14, and a distribution system In this case, the analysis target system extraction means 15 for extracting the branch section group having no interconnection switch and the accident occurrence section in which the power transmission procedure to this branch section group cannot be created, and the section extracted by this analysis target system extraction means 15 Are stored in the section load data storage area 1 for the branch section group without the interconnection switch stored in the analysis target system database 16. System analysis means 17 for determining whether or not the section load exceeds a certain amount of load determined by a certain standard, causing a serious supply hindrance when an accident occurs, and storing it in the analysis result data storage area 18, and analysis result data storage It has an analysis result display means 19 for displaying the analysis result of the area 18 on the display device 20, and in the distribution system operation, when the load exceeds a certain load in the branch section group having no interconnection switch, it becomes impossible to transmit power due to the occurrence of an accident. It has a function to display branch section groups and accident sections.

  The section load creating means 12 receives the load data of each distribution line input from the remote monitoring control device 10 at regular intervals, refers to the system database 14 and extracts the standard load of the section belonging to the distribution line, and distributes it. The load data of the electric wire is apportioned by the standard load and stored in the section load data storage area 13.

  The analysis target system extraction means 15 extracts a section to be analyzed and stores it in the analysis target system database 16. Here, the section to be analyzed means an accident occurrence section and a branch section group in which a power transmission procedure to a branch section group other than the accident section cannot be created by a switching operation of devices when an accident occurs on the system. The conceptual diagram of the system to be analyzed is shown in FIG. 21. The section indicated by the broken line in the figure is the accident occurrence section, the section indicated by the thick line is the branch section group, and the section indicated by the thin line is the non-analysis section. is there. SW1 to SW8 indicate normally closed section switches, and SWt1 is a normally open section switch for connection with other lines.

  Now, the algorithm of the analysis target system extraction means 15 will be described with reference to the analysis target system extraction processing flowchart of FIG.

  First, in the distribution line list-up process S2201, the number of distribution lines in all the systems included in the system database 14 is obtained. The following process is repeated for all the distribution lines (S2202).

  The switches and sections belonging to the distribution lines are obtained from the system database 14 (S2203), and the processing for the number of switches is performed (S2204). When the switch is a connected switch (S2205), a supply route search search for the switch is performed (S2206). The sections other than the sections listed as supply routes (corresponding to sections 1, 2, 6, 7, and 8 in FIG. 21) are set as branch section groups (corresponding to sections 3, 4, 5, and 9 in FIG. 21) (S2207). ).

  Next, an accident section that causes a power failure in the branch section group is obtained. The following processing is performed for the number of sections of the supply path (S2208). The connection information of the system database 14 of the section is referred to (S2209), and when there is a branch section group on the load side, the section is set as an accident occurrence section (sections 2 and 6 in FIG. 21 correspond) (S2211). In this way, the branch section group obtained in (S2207) and (S2211) and the accident occurrence section are stored in the analysis target database 16 (S2212).

  Next, the system analysis means 17 performs the following processing for all accident occurrence sections (sections 2 and 6) stored in the analysis system target database 16 in the procedure shown in FIG. 23 (S2301). The section (section 2) is temporarily set as an accident section, a system state is created with the load side as the power outage section, and the load side power outage section group of the section is obtained (S2302). When the interconnection switch SWt1 is connected to the load-side power outage section (S2303), the sum of the section loads in the load-side power outage section is obtained with reference to the section load data storage area 13, and there is a sum of the calculated load amounts. A section that is equal to or greater than the load amount condition for which a certain standard is set is extracted (S2304). The result is stored in the analysis result data storage area 18 (S2305).

  The analysis result display means 19 displays the analysis results in the analysis result data storage area 18 on the display device 20 in a table format. Moreover, based on the map information included in the system database 14, the branch section and the accident occurrence section in the analysis result data storage area 18 are always displayed on the distribution line map.

  According to this embodiment, with reference to the grid database 14, the load of each section belonging to the distribution line is created in the section load data storage area 13 from the load of the distribution line input from the remote monitoring control device 10. In the distribution system, a branch section group having no interconnection switch and an accident occurrence section in which a power transmission procedure to this branch section group cannot be created 15 are extracted. The section extracted by the analysis target system extracting means 15 is stored 16, and a certain reference with a section load in the section load data storage area 13 is determined for the stored branch section group without the interconnection switch. Analyze 17 whether or not the load amount is exceeded and a serious supply hindrance occurs when an accident occurs. An analysis result display means 19 for displaying the analysis result in the analysis result data storage area 18 on the display device 20 is provided. Therefore, in the distribution system operation, when the load exceeds a certain load in the branch section group without the interconnection switch, the branch section group and the accident section that cannot transmit power due to the occurrence of an accident are displayed. Therefore, the reserve capacity can be accurately grasped, which is extremely effective for monitoring and operation of the distribution system.

  FIG. 24 is a configuration diagram of the power distribution system monitoring apparatus 11 according to the seventh embodiment of the present invention. In FIG. 24, the distribution system monitoring device 11 includes a system database 14 for storing the capacity and connection state of each device constituting the distribution system such as a substation, bank, distribution line, high voltage line, switch, voltage regulator, and the like. The section load creating means 12 for creating the section load data storage area 13 for the loads of the sections belonging to the distribution line from the distribution line load input from the remote monitoring control device 10 with reference to the system database 14 is assumed. An accident occurrence section is arbitrarily set by the operator from the display device 20 and stored in the accident section setting data storage area 22, and an analysis target system extraction means 15 for extracting a branch section group having no interconnection switch. And the analysis target system database 16 for storing the branch section group extracted by the analysis target system extraction means 15 and the accident section of the accident section setting data storage area 22. For the branch section group without the interconnection switch stored in the analysis target system database 16, the section load in the section load data storage area 13 is more than a load amount that defines a certain standard, and is serious when an accident occurs. It has system analysis means 17 for determining whether or not to hinder supply and saving in the analysis result data storage area 18, and analysis result display means 19 for displaying the analysis result of the analysis result data storage area 18 on the display device 20, In the distribution system operation, if the load exceeds a certain load in the branch section group with no interconnection switch, the branch section group that cannot transmit power due to the occurrence of an accident and the arbitrarily assumed accident section are displayed.

  The section load creating means 12 receives the load data of each distribution line input from the remote monitoring and control device 10 at regular intervals, refers to the system database 14, takes out the standard load of the section belonging to the distribution line, and distributes the distribution line. Load data is apportioned by the standard load and stored in the section load data storage area 13.

  The accident section setting means 21 stores the accident section arbitrarily assumed by the operator from the display device 20 in the accident section setting data storage area 22.

  The analysis target system extraction means 15 extracts a section to be analyzed based on the accident section setting data storage area 22 for storing the assumed accident section with the system database 14 and stores it in the analysis target system database 16. Here, the section to be analyzed means a branch section group in which a power transmission procedure to a branch section group other than the accident section cannot be created by a device switching operation when an accident occurs in the assumed accident section. The conceptual diagram of the system to be analyzed is the same as that shown in FIG.

  The algorithm of the analysis target system extraction means 15 is shown in FIG. First, in the distribution line list-up process S2501, the distribution line to which the accident section assumed in the accident section setting data storage area 22 belongs is obtained from the distribution lines of all systems included in the system database 14. All switches and sections belonging to the obtained distribution line are obtained from the system database 14 (S2502). The following processing is performed for all the switches (S2503).

  If the switch is a connected switch (S2504), a supply route search search for the switch is performed (S2505). Other than the sections listed as supply routes (sections 1, 2, 6, 7, and 8 in FIG. 21 are applicable), branch section groups (sections 3, 4, 5, and 9 in FIG. 21 are applicable) (S2506). ).

  Next, an accident section that causes a power failure in the branch section group is obtained. The following processing is performed for the number of sections of the supply path (S2507). The connection information of the system database 14 of the section is referred to (S2508). If there is a branch section group on the load side (S2509), the section (corresponding to sections 2 and 6 in FIG. 21) is the accident section setting data storage area 22 (S2510), the branch section group obtained in the processing (S2506) that uses a section other than the section detected in the supply route search (S2506) and the assumed accident section are stored in the analysis target database 16. Save (S2511).

  Next, the system analysis means 17 sets the assumed accident section stored in the analysis system object database 16 in the procedure shown in FIG. 26 as the accident section, and creates a system state with the load side as the power outage section. A load-side power failure section group of the section is obtained (S2601).

  When the interconnection switch is connected to the load side power outage section (S2602), the sum of the section loads in the load side power outage section is obtained with reference to the section load data storage area 13, and the sum of the calculated load amounts is constant. A section that is equal to or greater than the load amount condition that defines the standard is extracted (S2603). The result is stored in the analysis result data storage area 18 (S2604).

  The analysis result display means 19 displays the analysis results in the analysis result data storage area 18 on the display device 20 in a table format. Moreover, based on the map information contained in the system database 14, the accident section assumed to be the branch section in the analysis result data storage area 18 is displayed on the distribution line map.

  According to this embodiment, with reference to the grid database 14, the load of each section belonging to the distribution line is created in the section load data storage area 13 from the load of the distribution line input from the remote monitoring control device 10. The operator sets an assumed accident occurrence section arbitrarily from the display device 20 and saves it in the accident section setting data storage area 22 and extracts a branch section group having no interconnection switch 15. Then, with respect to the branch section group having no interconnection switch, it is determined whether or not the section load in the section load data storage area 13 is greater than a certain amount of load that defines a certain standard, which causes a serious supply hindrance when an accident occurs. And stored in the analysis result data storage area 18 and displayed on the display device 20. Therefore, based on the accident section arbitrarily set by the operator, the branch section group and the accident section that cannot transmit power due to the occurrence of an accident when the branch section group without the interconnection switch exceeds a certain load is displayed. Therefore, the reserve capacity can be accurately grasped in consideration of the load situation and the system configuration, and it is extremely effective for monitoring and operating the distribution system.

  FIG. 27 is a configuration diagram of the power distribution system monitoring apparatus 11 according to the eighth embodiment of the present invention. In FIG. 27, the distribution system monitoring device 11 includes the capacity of each device (substation, bank, distribution line, high voltage line, switch, voltage regulator, etc.) constituting the distribution system, including the standard on / off state of each switch. System database 14 that stores the connection status and the connection database, and each distribution line that extracts the disconnected switch in the standard state that interconnects each distribution line from the system database 14 and supplies both ends of the connection switch The upper system of the bank to which the electric wire belongs is searched, and for each interconnection switch of each distribution line, it is checked whether the interconnection switch is an interconnection switch between different banks and stored in the analysis result data storage area 18. The system analysis means 17 and the analysis result display means 19 for displaying the analysis results in the analysis result data storage area 18 on the display device 20 are provided.

  The system analysis means 17 extracts the switch to be analyzed and stores it in the analysis result data storage area 18. Here, the switch to be analyzed is the switch in the standard cut-off state where the distribution lines are connected to each other on the system and the distribution lines and substations of the distribution lines supplied to both ends of the switch. Switches with different banks. A conceptual diagram of the system to be analyzed is shown in FIG. In FIG. 28, the system state is a standard operating state, SW1 to SW7 are normally closed section switches, SWt1 and SWt2 are normally open connected switches, and the connected switches SWt1 and SWt2 are It is a switch to be analyzed.

  The extraction algorithm in the system analysis means 17 is shown in the analysis target system extraction processing flowchart of FIG.

  First, in the distribution line list-up process (S2901), the number of distribution lines in all systems included in the system database 14 is obtained. The processing below the number of distribution lines is repeated (S2902). The switch and section belonging to the distribution line are obtained from the system database 14 (S2903). Processing for the number of switches is performed (S2904). If the switch is an interconnection switch, the supply route at both ends of the switch is searched to obtain a supply distribution line (S2905). When the upper systems of the banks belonging to the supply and distribution lines at both ends of the corresponding interconnection switch are different, they are stored in the analysis result data storage area 18 (S2906).

  The analysis result display means 19 displays the analysis results in the analysis result data storage area 18 on the display device 20 in a table format. Further, based on the map information included in the system database 14, the switches included in the analysis result data storage area 18 are displayed in different colors on the distribution line diagram.

  According to this embodiment, the distribution switch in the disconnected state is extracted from the system database 14 in the standard state in which the distribution lines are connected to each other, and the bank to which each distribution line belongs is supplied to both ends of the connection switch. Is searched for, and for each interconnection switch of each distribution line, it is checked whether the interconnection switch is an interconnection switch between different banks, and is stored in the analysis result data storage area 18. Then, based on the analysis result in the analysis result data storage area 18, whether or not each interconnection switch is between different banks is displayed on the display device 20. Therefore, it is possible to grasp the influence when the connection switch that is normally open is turned on, which is extremely effective for monitoring and operating the distribution system.

  FIG. 30 is a configuration diagram of the power distribution system monitoring apparatus 11 according to the ninth embodiment of the present invention. In FIG. 30, the capacity and connection state of each device (substation, bank, distribution line, high voltage line, switch, voltage regulator, etc.) constituting the distribution system, including the standard on / off state of each switch, is stored. The grid database 14, the grid switch setting means 91 for storing the grid switch set by the operator from the display device 20 in the grid switch setting data storage area 92, and the distribution lines are interconnected from the grid database 14. When the connected switch that is in the standard state is turned off and the extracted connected switch and the connected switch stored in the connected switch setting data storage area 92 are the same, Search the upper system of the bank belonging to each distribution line that supplies both ends, check whether each interconnection switch is connected to a different bank for each interconnection switch, and analyze the result System to save in data storage area 18 And analysis means 17 has an analysis result display unit 19 for displaying the analysis result of the analysis result data storage area 18 on the display device 20.

  The system analysis means 17 determines whether or not the interconnection switch set by the operator from the display device 20 and stored in the interconnection switch setting data storage area 92 is to be analyzed. The interconnection switch is stored in the analysis result data storage area 18. Here, the switch to be analyzed is the standard cut-off switch that links the distribution lines on the system and the distribution lines and substations that belong to both ends of the switch. Switches with different banks. The conceptual diagram of the system to be analyzed is the same as FIG.

  The extraction algorithm in the system analysis means 17 is shown in the analysis target system extraction processing flowchart of FIG.

  First, in the distribution line listing process (S3101), the number of distribution lines in all systems included in the system database 14 is obtained. The processing below the number of distribution lines is repeated (S3102). The switch and section belonging to the distribution line are obtained from the system database 14 (S3103). The processing below the number of the switches is performed (S3104). If the switch is an interconnected switch stored in the interconnected switch setting data storage area 92, the supply route at both ends of the switch is searched to obtain a supply distribution line (S3105). When the upper systems of the banks belonging to the supply and distribution lines at both ends of the corresponding interconnection switch are different, they are stored in the analysis result data storage area 18 (S3106).

  The analysis result display means 19 displays the analysis results in the analysis result data storage area 18 on the display device 20 in a table format. Further, based on the map information included in the system database 14, the switches included in the analysis result data storage area 18 are displayed in different colors on the distribution line diagram.

  According to this embodiment, the linked switch set by the operator from the display device 20 is stored 91 in the linked switch setting data storage area 92. In the standard state in which the respective distribution lines are interconnected from the system database 14, the disconnection switch in the cut state is extracted, and the extracted connection switch and the connection switch stored in the connection switch setting data storage area 92 are extracted. When the switch is the same, the upper system of the bank belonging to each distribution line that supplies both ends of the connection switch is searched, and for each connection switch of each distribution line, the connection switch is connected to a different bank. Whether the switch is a system switch or not is checked, and stored in the analysis result data storage area 18. Then, based on the analysis result in the analysis result data storage area 18, whether or not each interconnection switch is between different banks is displayed on the display device 20. Therefore, since it is displayed whether or not the interconnected switch set arbitrarily by the operator is between different banks, it is possible to grasp the impact when the interconnected switch that is normally open is turned on, and It is extremely effective for system monitoring and operation.

  FIG. 32 is a configuration diagram of the power distribution system monitoring apparatus 11 according to the tenth embodiment of the present invention. In the same figure, the distribution system monitoring device 11 is connected to the remote monitoring control device 10, and from the switch information inputted from the remote monitoring control device 10, the switch current on / off state data is created and the switch current on / off status data is generated. The current on / off state creation means 101 to be stored in the off state data storage area 102 and the capacity of each device (substation, bank, distribution line, high voltage line, switch, voltage regulator, etc.) constituting the distribution system The system database 14 for storing the connection state, and the system switch 14 and the switch currently connected / disconnected state data storage area 102 extract the currently connected state connected switch that interconnects each distribution line, and the connected switch Search the upper system of the bank belonging to each distribution line to be supplied to both ends of the section, and check whether the interconnection switch for each distribution line is a connection switch with a different bank for analysis Result data A system analysis unit 17 to store the presence area 18, has an analysis result display unit 19 for displaying the analysis result of the analysis result data storage area 18 on the display device 20.

  The system analysis means 17 extracts the switch to be analyzed and stores it in the analysis result data storage area 18. Here, the switch to be analyzed is the switch in the current “off” state where the distribution lines are connected to each other on the system and the distribution lines and substations of the distribution supply lines at both ends of the switch. The supply banks or substations are different switches. A conceptual diagram of the system to be analyzed is shown in FIG. In FIG. 33, SW1 to SW7 are normally closed section switches, and SWt1 to SWt3 are normally open interconnection switches. In this figure, the normally closed switch SW7 is in the open state, and the normally open linked switch SWt3 is in the closed state. The normally closed switch SW7 and the linked switch SWt3 are the analysis target switches. In the figure, the analysis target switch is indicated by a thick line, and the non-analysis switch is indicated by a thin line.

  The extraction algorithm of the system analysis means is shown in the analysis target system extraction processing flowchart of FIG.

  First, in the distribution line listing process S3401, the number of distribution lines in all the systems included in the system database 14 is obtained. The following process is repeated for all the distribution lines (S3402). The distribution line belonging switch and section are obtained from the system database 14 (S3403). The processing below the number of the switches is performed (S3404). If the switch is a current switch, the supply path at both ends of the switch is searched to obtain a supply distribution line (S3405). When the upper systems of the banks belonging to the supply and distribution lines at both ends of the corresponding interconnection switch are different, they are stored in the analysis result data storage area 18 (S3406).

  The analysis result display means 19 displays the analysis results in the analysis result data storage area 18 on the display device 20 in a table format. Further, based on the map information included in the system database 14, the switches included in the analysis result data storage area 18 are displayed in different colors on the distribution line diagram.

  According to this embodiment, the switch current on / off state data is created from the switch information input from the remote monitoring control device 10 and stored in the switch current on / off state data storage area 102. Then, from the system database 14 that stores the capacity and connection state of each device constituting the distribution system and the switch current on / off state data storage area 102, the currently-off state connected switch that connects each distribution line is extracted. Then, the upper system of the bank to which each distribution line to be supplied to the both ends of the connection switch is searched, and for each connection switch of each distribution line, the connection switch is connected to a different bank. Whether or not the data is stored in the analysis result data storage area 18. Based on the analysis result in the analysis result data storage area 18, whether or not each interconnection switch is a linkage switch with a different bank is displayed on the display device 20. Therefore, it is possible to grasp the effect when the switch is turned off, which is extremely effective for monitoring and operating the distribution system.

  FIG. 35 is a configuration diagram of the power distribution system monitoring apparatus 11 according to the eleventh embodiment of the present invention. In FIG. 35, the power distribution system monitoring device 11 is connected to the remote monitoring and control device 10, and generates the switch current on / off status data from the switch information input from the remote monitoring control device 10. State creation means 101, switch current on / off state data storage area 102 for storing the current on / off state of the switch, and each device (substation, bank, distribution line, high voltage line, switch, A system database 14 for storing the capacity and connection state of the voltage regulator and the like, and a connection switch setting means 91 for storing the connection switch set by the operator from the display device 20 in the connection switch setting data storage area 92. Then, from the system database 14 and the switch current on / off state data storage area 102, the currently open state connected switch connecting the distribution lines is extracted, and the extracted connected switch is connected to open / close. When it is the same as the interconnection switch stored in the setting data storage area 92, the upper system of the bank to which each distribution line belongs to the both ends of the interconnection switch is searched, and the interconnection switch of each distribution line is searched. Each time the connected switch is checked to see if it is a connected switch with a different bank and stored in the analysis result data storage area 18, and the analysis result in the analysis result data storage area 18 is displayed on the display device 20. And an analysis result display means 19 for displaying on the screen.

  The system analysis means 17 determines whether or not the interconnection switch set by the operator from the display device 20 and stored in the interconnection switch setting data storage area 92 is an analysis target. The switch is stored in the analysis result data storage area 18. Here, the switch to be analyzed is the switch in the current “off” state where the distribution lines are connected to each other on the system and the distribution lines and substations of the distribution supply lines at both ends of the switch. The supply banks or substations are different switches. The conceptual diagram of the system to be analyzed is the same as that shown in FIG.

  The extraction algorithm of the system analysis means is shown in the analysis target system extraction processing flowchart of FIG.

  First, in the distribution line listing process S3601, the number of distribution lines in all the systems included in the system database 14 is obtained. The following process is repeated for all the distribution lines (S3602). The distribution line belonging switch and section are obtained from the system database 14 (S3603). Processing for the number of switches is performed (S3604). If the switch is a link switch stored in the link switch setting data storage area 92 and is a current switch, the supply route at both ends of the switch is searched to obtain a supply distribution line (S3605). ). When the upper systems of the banks belonging to the supply and distribution lines at both ends of the corresponding interconnection switch are different, they are stored in the analysis result data storage area 18 (S3606).

  The analysis result display means 19 displays the analysis results in the analysis result data storage area 18 on the display device 20 in a table format. Moreover, based on the map information contained in the system | strain database 14, the switch contained in the analysis result data 18 is displayed on a distribution line map by changing a color.

  According to this embodiment, the switch current on / off state data is created from the switch information inputted from the remote monitoring control device 10 and stored in the switch current on / off state data storage area 102, and the distribution system The system database 14 that stores the capacity and connection state of each device that constitutes the system, and the connected switch set by the operator from the display device 20 are stored in the connected switch setting data storage area 92. Then, from the system database 14 and the switch current on / off state data storage area 102, a currently off state connected switch that interconnects each distribution line is extracted, and the extracted connected switch is connected switch setting data. When it is the same as the interconnection switch stored in the storage area 92, the upper system of the bank belonging to each distribution line supplied to both ends of the interconnection switch is searched, and for each interconnection switch of each distribution line It is checked whether or not the interconnecting switch is an interconnecting switch with a different bank and stored in the analysis result data storage area 18. Based on the analysis result in the analysis result data storage area 18, whether or not each interconnection switch is a linkage switch with a different bank is displayed on the display device 20. Therefore, it is possible to grasp the influence when the switch is turned on arbitrarily set by the operator, which is extremely effective for monitoring and operating the power distribution system.

The lineblock diagram of the distribution system monitoring device concerning the 1st example of the present invention. The conceptual diagram of an analysis object system | strain. The analysis object area extraction process flowchart. All-connected switch list processing. System analysis means algorithm. The conceptual diagram of a procedure creation process. The block diagram of the distribution system monitoring apparatus which concerns on 2nd Example of this invention. System analysis means algorithm. The conceptual diagram of a procedure creation process. The block diagram of the power distribution system monitoring apparatus which concerns on the 3rd Example of this invention. The harmonic information analysis process flowchart. The conceptual diagram of an analysis object system | strain. The block diagram of the power distribution system monitoring apparatus which concerns on the 4th Example of this invention. Section voltage analysis processing flowchart. The block diagram of the power distribution system monitoring apparatus which concerns on the 5th Example of this invention. The load data block diagram. The load analysis means process flowchart. Analysis result data block diagram. The reserve power display example figure to a systematic diagram. The block diagram of the distribution system monitoring apparatus which concerns on the 6th Example of this invention. The conceptual diagram of an analysis object system | strain. The analysis system | strain extraction process flowchart. System analysis means algorithm. The block diagram of the power distribution system monitoring apparatus which concerns on the 7th Example of this invention. The analysis object extraction process flowchart. System analysis means algorithm. The block diagram of the distribution system monitoring apparatus which concerns on the 8th Example of this invention. The conceptual diagram of an analysis object system | strain. The analysis system | strain extraction process flowchart. The block diagram of the distribution system monitoring apparatus which concerns on the 9th Example of this invention. The analysis system | strain extraction process flowchart. The block diagram of the distribution system monitoring apparatus which concerns on the 10th Example of this invention. The conceptual diagram of an analysis object system | strain. The analysis system | strain extraction process flowchart. The block diagram of the distribution system monitoring apparatus which concerns on the 11th Example of this invention. The analysis system | strain extraction process flowchart. The block diagram of the conventional power distribution system monitoring apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Remote monitoring control apparatus 11 ... Distribution system monitoring apparatus 12 ... Section load creation means 13 ... Section load data storage area 14 ... System database 15 ... Analysis object system extraction means 16 ... Analysis object system database 17 ... System analysis means 18 ... Analysis result Data storage area 19 ... Analysis result display means 20 ... Display device 21 ... Accident section setting means 22 ... Accident section setting data storage area 31 ... Per-section harmonic information creating means 32 ... Per-section harmonic information data storage area 33 ... Customer harmonics Wave related device information database 34 ... harmonic analysis means 41 ... section voltage creation means 42 ... section voltage data storage area 43 ... section voltage analysis means 44 ... section voltage analysis data storage area 45 ... section voltage analysis display means 51 ... load data storage Means 52 ... Load data storage area 53 ... Load analysis means 61 ... System state data storage Area 91 ... Linked switch setting means 92 ... Linked switch setting data storage area 101 ... Switch current on / off state creation means 102 ... Switch current on / off state data storage area 371 ... System monitoring means

Claims (5)

A system database that stores the capacity and connection status of each device constituting the power distribution system;
A customer harmonic related equipment information database for storing harmonic related equipment information of customers having harmonic generating equipment present on the distribution system;
In accordance with the system configuration data of the system database and the harmonic related device data of the customer harmonic related device information database, from the harmonic measurement value of the distribution line input from the remote monitoring control device, the section of each section belonging to the distribution line Harmonic information creation means for each section for creating every harmonic information data;
The harmonic information for each section created by the section harmonic information creating means is compared with the harmonic reference value determined in the current system configuration of each section stored in the system database, and the operational reference value Harmonic analysis means for analyzing current harmonic information of each section by determining whether it is within the range, and analysis result display means for displaying analysis result data created by this harmonic analysis means on a display device Distribution system monitoring device characterized by that. A system database that stores the capacity and connection status of each device constituting the power distribution system;
According to the system configuration data of this system database, from the load of the distribution line input from the remote monitoring control device, section load creation means for creating the load of each section belonging to the distribution line as section load data,
Section voltage database that stores the voltage of the main section belonging to the distribution line input from the remote monitoring control device,
Section voltage analysis means for comparing the section load data created by the section load creation means, the current section voltage obtained based on the section voltage data of the section voltage database, and a preset operation reference voltage When,
A distribution system monitoring apparatus comprising: section voltage analysis display means for displaying section voltage analysis data of the section voltage analysis means on a display device. A system database that stores the capacity and connection status of each device constituting the power distribution system;
Load data storage means for storing the load of each section belonging to the distribution line and the passing current of each switch as load data from the load of the distribution line input from the remote monitoring control device according to the system configuration data of this system database When,
A load analysis means for comparing the current load value of each device obtained based on this load data and the system database with a preset allowable load value, and storing the comparison result as analysis result data;
A distribution system monitoring apparatus comprising load state display means for displaying the analysis result data on a display device, and always displaying a margin of electrical capacity of each device with respect to a current system load. A system database that stores the capacity and connection status of each device constituting the power distribution system;
According to the system configuration data of this system database, from the load of the distribution line input from the remote monitoring control device, section load creation means for creating the load of each section belonging to the distribution line as section load data,
An analysis target system extracting means for extracting a branch section group having no interconnection switch arranged in a tree form in the distribution system and an accident occurrence section in which a power transmission procedure to the branch section group cannot be created;
System analysis means for determining whether or not the section load data of each branch section group exceeds a certain amount of load that has determined a certain standard, causing a serious supply hindrance when an accident occurs, and storing it in analysis result data,
A distribution system monitoring apparatus comprising: analysis result display means for displaying analysis result data on a display device. A system database that stores the capacity and connection status of each device constituting the power distribution system;
According to the system configuration data of this system database, from the load of the distribution line input from the remote monitoring control device, section load creation means for creating the load of each section belonging to the distribution line as section load data,
Accident section setting means for the operator to arbitrarily set the assumed accident occurrence section from the display device and save it in the accident section setting data,
An analysis target system extracting means for extracting a branch section group having no interconnection switch arranged in a dendritic manner in the distribution system;
Determine and analyze whether or not there is a serious supply hindrance when an accident occurs in the accident section assumed by the accident section setting data when the section load data of each branch section group exceeds a certain amount of load determined by a certain standard Phylogenetic analysis means to save the result data;
A distribution system monitoring apparatus comprising: analysis result display means for displaying analysis result data on a display device.

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