JP4158730B2 - Distribution line new design support method and apparatus - Google Patents

Description

  The present invention relates to a technique for supporting the planning of a new distribution line design drawing.

  In planning the expansion plan of the power distribution system, extract the necessary countermeasure points where the voltage and current values of each distribution line cannot satisfy the separately defined criteria at any time and in any place. Therefore, it is necessary to plan inexpensive and effective equipment measures.

Japanese Patent Laid-Open No. 2000-270474 discloses the following description as a system for supporting such planning.
(Procedure 1) From the three-phase power flow calculation result, a section where a constraint violation (section current constraint or section voltage constraint) occurs is extracted.
(Procedure 2) A feeder including a constraint violation section is extracted.
(Procedure 3) In the extracted feeder, a section that can be linked is searched for in a section that is located at the end as much as possible.
(Procedure 4) Assuming that the interconnectable sections are connected by an interconnecting line, approximate calculation is performed for voltage and current.
(Procedure 5) If the constraint violation is resolved by the approximate calculation, the process proceeds to Procedure 7. If the constraint violation is not resolved, another linkable section is searched and approximation calculation is executed again.
(Procedure 6) Repeat step 3 and subsequent steps until the constraint violation is resolved.
(Procedure 7) Repeat Step 3 and subsequent steps until all constraint violation feeders are resolved.
Here, it is assumed that which section and which section can be linked is given as data in advance.
JP 2000-270474 A

  This publication discloses a processing flow when a distribution line is newly established. As described in “Which section and which section can be linked should be given as data in advance” In this way, it is not clear how to determine the starting point and ending point of the newly established distribution line.

  Accordingly, an object of the present invention is to provide a technique that appropriately extracts a starting point and an ending point of a newly installed distribution line and makes it possible to plan an appropriate new distribution line design.

  The distribution line new design drawing support method according to the present invention searches from a power source using a database (for example, the planned system DB 31 in the embodiment) storing data related to a distribution system, and at least one of current and voltage is the first. The first distribution line in which there is a section that does not meet the criteria (for example, the starting point candidate condition in the embodiment) and there is a section that does not meet the second criteria (for example, the restriction condition in the embodiment) that is looser than the first reference And specifying candidate data that can be the starting point of the newly installed distribution line included in the sections subsequent to the section that does not satisfy the first criterion, and the starting candidate data storage unit (for example, the starting candidate data storage unit in the embodiment) 303) on the distribution line different from the first distribution line based on the specific step stored in 303) and the distance from the origin candidate included in the origin candidate data storage unit. A step of identifying an end point candidate corresponding to the start point candidate, storing the end point candidate in association with the start point candidate in a candidate route data storage unit (for example, the candidate route data storage unit 305 and the new route candidate data storage unit 307 in the embodiment), and a database And the candidate route data storage unit, generate data related to the distribution system assuming a new distribution line from the starting point candidate to the corresponding end point candidate, and use the data regarding the assumed distribution system to Route candidate specification that determines whether there is a section that does not satisfy the second criterion, and stores a pair of a starting point candidate and an end point candidate that is determined not to have a section that does not satisfy the second criterion in the candidate route data storage unit Steps.

  In this way, a section that does not satisfy the first standard that is stricter than the second standard is specified, and if a section that does not satisfy the second standard is found, the section after the section that does not satisfy the first standard is started. Since it can identify as a section for extracting a candidate, search processing can be reduced. Further, if there is a difference between the first reference and the second reference, the starting point candidate can be automatically specified with a margin between the first reference and the second reference. Further, the end point candidates are also automatically extracted based on the distance based on the start point candidates. Thereby, a rational new route candidate can be specified.

  The map database is searched for the shortest distance on the road from the starting point candidate to the corresponding end point candidate, and the route data and the distance data from the starting point candidate to the end point candidate are stored in the candidate route data storage unit. You may make it further contain the step stored corresponding to a pair of a candidate and an end point candidate. This is because it is usually difficult to newly install a distribution line in a place where there is no road, and a route that passes only through the road is more feasible.

  Further, a step of estimating the cost from the starting point candidate to the end point candidate using the data stored in the candidate route data storage unit, and storing the cost corresponding to the pair of the starting point candidate and the end point candidate in the candidate route data storage unit is further included. It may be included. When determining the final route, the cost is a large factor. For example, the cost is calculated based on the distance on the road and the estimated number of power poles. Note that when outputting to the user, the list may be displayed by sorting in the order of cost, or the new route candidate may be mapped on the map and the cost data or the like may be added.

  Furthermore, the specific step described above is a sub-section that does not satisfy the first criterion among a plurality of sub-sections included in the section first identified as a section that does not satisfy the first reference in the first distribution line. An identifying step may be included. At that time, the starting candidate data that can be the starting point of the newly installed distribution line included in the sub-sections and the sections after the sub-section that does not satisfy the first criterion may be stored in the starting point candidate data storage unit. For example, a section between two power poles can be used as a section, or a plurality of power poles can be combined into a section. It is also possible to set a larger section. For example, when a specific step is performed for a predetermined large section and a distribution line is specified, the large section first identified as a section that does not satisfy the first standard in the distribution line is subdivided. If a small section that does not satisfy the first criterion is specified in a small section (between two power poles or a middle section), the starting point candidates can be appropriately narrowed down, and the processing amount of the following processing can be reduced. it can.

  In addition, the route candidate specifying step described above cuts the first distribution line immediately before the first section that does not satisfy the first reference or the second reference, and the second distribution to which the end point candidate is connected. Generates data related to the temporary power distribution system in a state in which the distribution lines from the first candidate to the corresponding start point candidate are connected to the first and second sections after the section that does not satisfy the first standard or the second standard. And a step of confirming whether or not there is a section that does not satisfy the second standard using the data related to the temporary power distribution system for the second distribution line. In this way, it is only necessary to determine whether there is a section that does not satisfy the second standard for only the second distribution line, so the amount of processing is reduced.

  It is also possible to create a program for causing a computer to execute the method according to the present invention, and the program is a storage medium such as a flexible disk, a CD-ROM, a magneto-optical disk, a semiconductor memory, and a hard disk. Alternatively, it is stored in a storage device. The program or the like may be distributed as a digital signal via a network. Further, the data being processed is temporarily stored in a storage device such as a main memory of the computer.

  ADVANTAGE OF THE INVENTION According to this invention, the starting point and end point of a new distribution line are extracted appropriately, and the design of an appropriate new distribution line design drawing is enabled.

  FIG. 1 shows a system outline diagram according to an embodiment of the present invention. For example, a local area network (LAN) 1 that is an intranet includes a distribution facility planning support system server 3 that performs the main processing in the present embodiment and has, for example, a Web server function, and a personal computer having, for example, a Web browser. A user terminal such as user terminal A or user terminal B, which is a computer, is connected. The distribution facility planning support system server 3 manages a planned system DB 31, a map DB 32, a facility management DB 33, a contract information DB 34, and an operation information DB 35.

  FIG. 2 shows a functional block diagram of the distribution facility plan support system server 3. The distribution facility planning support system server 3 refers to the facility management DB 33, the contract information DB 34, and the operation information DB 35, and creates a preprocessing unit 301 that generates system data and additional data to be stored in the planned system DB 31, and a planned system DB 31. A countermeasure required point extraction processing unit 302 that performs processing for extracting a necessary countermeasure point (and a starting point candidate range) and a starting point candidate of a newly established distribution line and stores data relating to the starting point candidate in the starting point candidate data storage unit 303. And a process for extracting an end point candidate corresponding to the start point candidate with reference to the start point candidate data storage unit 303, the start point candidate data storage unit 303, the facility management DB 33, and the like. End point candidate extraction processing unit 304 for storing the data in candidate route data storage unit 305, candidate route data storage unit 305, and origin candidate The data storage unit 303, the candidate route data storage unit 305, and the planned system DB 31 are used to perform processing for detecting the presence / absence of countermeasure points, and candidate routes (start point candidates and end points) where no countermeasure point is detected are implemented. The candidate location detection processing unit 306 that stores the data of the candidate pair) in the new route candidate data storage unit 307, the new route candidate storage unit 307, the new route candidate data storage unit 307, and the map DB 32 on the road A road route extraction processing unit 309 that searches for the shortest route between the start point candidate and the end point candidate in the route and stores the shortest route data and distance data in the new route candidate data storage unit 307, and a new route candidate data storage unit 307, the construction cost is estimated for each route, and the construction cost data is stored in the new route candidate data storage unit 307. It has a thing cost calculation unit 308, and an output data generating unit 310 for generating data for presenting the processing results to the user with reference to the new route candidate data storage unit 307 and the map DB 32.

  The user terminal A and the user terminal B and the power distribution facility plan support system server 3 shown in FIG. 1 are computers, and the computer has a configuration as shown in FIG. That is, the memory 2501, the CPU 2503, the hard disk drive (HDD) 2505, the display control unit 2507 connected to the display device 2509, the drive device 2513 for the removable disk 2511, the input device 2515, and the communication control unit for connecting to the network. 2517 is connected to the bus 2519. An operating system (OS) and an application program for performing the above-described processing are stored in the HDD 2505, and are read from the HDD 2505 to the memory 2501 when executed by the CPU 2503. If necessary, the CPU 2503 controls the display control unit 2507, the communication control unit 2517, and the drive device 2513 to perform necessary operations. Further, data in the middle of processing is stored in the memory 2501 and stored in the HDD 2505 if necessary. Such a computer realizes various functions as described above by organically cooperating hardware such as the CPU 2503 and the memory 2501 described above with the OS and necessary application programs.

  The processing flow of the system shown in FIG. 1 will be described below with reference to FIGS. For example, the user operates the user terminal A to cause the Web browser to access a specific URL (Uniform Resource Locator) of the power distribution facility plan support system server 3. Then, the power distribution facility plan support system server 3 transmits data of a specific Web page corresponding to the URL to the user terminal A. The Web browser of the user terminal A receives the Web page data from the power distribution facility plan support system server 3 and displays it on the display device. And the distribution line new route calculation instruction | indication is input in the said web page. The distribution line new route calculation instruction may include setting data such as a load elongation rate, for example. The user terminal A receives a distribution line new route calculation instruction from the user, and transmits distribution line new route calculation instruction data to the distribution facility plan support system server 3. The distribution facility plan support system server 3 receives the distribution line new route calculation instruction data from the user terminal A, and accepts the distribution line new route calculation instruction (FIG. 4: step S1).

  In response to or before the distribution line new route calculation instruction, the preprocessing unit 301 refers to the facility management DB 33, the contract information DB 34, and the operation information DB 35, and stores data in the planned system DB 31.

  An example of data stored in the facility management DB 33 is shown in FIGS. FIG. 5A shows an example of a utility pole table. The utility pole table includes a utility pole name column, a position information (latitude and longitude) column, and a belonging information (wiring line name and section number) column. Thus, one record is provided for each utility pole. The position information is used to specify where the map is located on the map. The affiliation information is used to identify a distribution line that is hung on the utility pole and a section in the distribution line. About the section in the distribution line, it is possible to set the section (small section) between the two utility poles which is the minimum unit, the middle section where several small sections are gathered, the large section where several middle sections are gathered, etc. . Here, it is assumed that the middle section is set. FIG. 5B shows an example of the adjacency table. The adjacent relationship table includes a column of utility pole names, a column of adjacent utility pole names, and a column of facilities between poles that is data (types and sizes of distribution lines) about facilities between utility poles. Thereby, each electric pole can be tied. FIG. 5C shows an example of the distribution line table. The distribution line table includes a distribution line type column, a size column, an allowable current column, and an impedance column. Thus, one record is provided for each type of distribution line. 5B and 5C, it is possible to specify what kind of current can flow between the utility poles and how much the impedance is.

  An example of data stored in the contract information DB 34 is shown in FIG. The table stored in the contract information DB 34 is provided with a customer name column, a contract ampere [A] column, and a utility pole name column of the connected utility pole. This gives you the total contract amount for each utility pole. An example of data stored in the driving information DB 35 is shown in FIG. The table stored in the operation information DB 35 includes a distribution line name column, a year column, a month column, a day column, a time column, and a current column. In this way, it is registered when and how much current flows in which distribution line.

  The preprocessing unit 301 generates system data with reference to the facility management DB 33 and stores the system data in the planned system DB 31. This system data is data for specifying, for example, the connection relationship between utility poles and distribution lines connected from a substation. For example, FIG. 8 shows an example of system data. In the example of FIG. 8, the distribution line A, the distribution line D, and the distribution line B extend from the X substation. A distribution line C extends from the Y substation. Although not shown in the example of FIG. 8, each distribution line is registered so that the utility pole, the node of the section, and the electric wire type between the utility poles or in the section can be specified. In the example of FIG. 8, the geographical arrangement is also taken into consideration, but geographical data is not necessary at this stage. However, the data in the map DB 32 may be reflected.

  In addition, the preprocessing unit 301 generates load data for each power pole or node in each section, and stores the load data in the planned system DB 31. The load data of each power pole can be calculated by (total of contracted height [A] of the power pole) × (annual maximum current value of the distribution line hanging over the power pole / total of the contracted height [A] of the distribution line). The contract height of each power pole can be calculated by collecting the data stored in the contract information DB 34 with the power pole. The yearly maximum current value of the distribution line hanging on the utility pole can be detected by searching the operation information DB 35. The total contracted amount of distribution lines can be obtained by calculating the sum of the contracted amounts aggregated for the utility poles related to the distribution lines. When data about nodes is necessary, it can be obtained by collecting data on utility poles belonging to the section.

  The system data and load data calculated so far are current data. In the present embodiment, it is confirmed whether the power distribution capability is sufficient at a certain time in the future, and if there is a problem, the pre-processing unit 301 further handles the future load data. Is also calculated and stored in the planned system DB 31. Future load data is calculated by (current load data) × (elongation rate given in advance for each distribution line, for each section, for each region, and for each power pole). For example, future load data is calculated according to the load growth rate included in the distribution line new route calculation instruction. A user may prescribe | regulate an elongation rate in any unit of a distribution line, an area, and a utility pole.

  Thus, if the system data and future load data stored in the planned system DB 31 are used, the following processing can be executed.

  Returning to the description of FIG. 4, the countermeasure required part extraction processing unit 302 extracts the required countermeasure part, the starting point candidate range, and the starting candidate of the new distribution line with reference to the planned system DB 31 and stores them in the starting point candidate data storage unit 303. (Step S3). This process will be described with reference to FIG.

  The countermeasure-necessary portion extraction processing unit 302 first selects one unprocessed distribution line to be processed (step S31). Then, referring to the planned system DB 31, one section (here, a small section between two power poles for the sake of simplicity) is identified in order from the power source such as a substation, and the identified section Three-phase power flow calculation is performed, and the calculation result is stored in a storage device such as a main memory (step S33). Since the three-phase power flow calculation is a well-known method, it will not be described in detail here, but the voltage (or voltage drop) and current value at the end node (electric pole far from the power source) of the section are calculated as output.

  Then, the countermeasure-necessary portion extraction processing unit 302 determines whether the calculated voltage and / or current value satisfies the preset starting point candidate condition (step S35). For example, it is determined whether the voltage drop is 500V. If it is determined that it is not satisfied, it is determined whether the section is a terminal section of the distribution line (step S37). If it is not the terminal section, the next section is specified (step S39), and the process returns to step S33.

  On the other hand, when it is determined that the starting point candidate condition is satisfied, the section is specified as a candidate for the starting point candidate, and for example, data of the section is stored in a storage device such as a main memory (step S41). Further, it is determined whether it is a terminal section (step S43). If it is the terminal section, the designation of the candidate for the starting point is canceled (step S45). In other words, if a voltage drop that can be used as a starting point candidate is detected, but there is actually no voltage drop that satisfies the restriction conditions, the candidate starting point candidate is unspecified and the starting point candidate is specified. It shifts to the next process without performing it. On the other hand, when it is determined that it is not the terminal section, the next section is specified (step S47). Then, a well-known three-phase power flow calculation is performed for the identified section, and the voltage (or voltage drop) and current value at the section end node are calculated and stored in a storage device such as a main memory (step S49).

  Then, the countermeasure-necessary portion extraction processing unit 302 determines whether the calculated voltage and / or current value satisfies a preset restriction condition (step S51). For example, it is determined whether the voltage drop is 600V. That is, the starting point candidate condition is stricter than the limiting condition. If it is determined that the restriction condition is not satisfied, the process returns to step S43. On the other hand, when it is determined that the restriction condition is satisfied, the section and the subsequent sections are specified as countermeasure points, and all sections after the candidate section of the starting candidate specified in step S41 are specified as the starting candidate range. The section identification information is stored in the starting point candidate data storage unit 303 (step S53). Further, all nodes (in this case, power poles) included in the section designated in the starting point candidate range are specified as starting point candidates, and the identification information of the starting point candidate nodes is stored in the starting point candidate data storage unit 303 (step S54). ). Then, control goes to a step S55.

  10A and 10B show an example of data stored in the starting point candidate data storage unit 303. FIG. FIG. 10A is an example of a countermeasure required data table. This table includes a distribution line name column, a start point candidate range start section number column, a countermeasure required section start section number column, and an end section number column. As a result, it is possible to identify a section designated as a countermeasure required place and a starting point candidate range. However, only the starting point candidate range may be specified. In that case, the starting point candidate range and the countermeasure required portion may be handled as the same.

  FIG. 10B is an example of a starting point candidate data table. This table includes a column of starting point candidate utility pole names, a column of belonging distribution line names, and a column of belonging section numbers. Thereby, the utility pole (node) of the starting point candidate can be specified.

  After step S37, S45, or S54, the countermeasure-necessary point extraction processing unit 302 determines whether all distribution lines to be processed have been processed (step S55). If there is an unprocessed distribution line, the process returns to step S31. On the other hand, if all the distribution lines have been processed, the process returns to the original process.

  If such a process is performed, a starting point candidate can be set with a margin between the starting point candidate condition and the limiting condition, and a more preferable starting point candidate can be extracted. However, the starting point candidate condition and the restriction condition may be the same. Furthermore, if a section that satisfies the restriction condition is specified, the subsequent processing is interrupted, so that the search time can be shortened.

  In addition, although the example which processes on the basis of the small division comprised by an electric pole was shown above, since the number of electric poles is enormous, the countermeasure required part extraction process is very heavy. Therefore, for example, three-phase power flow calculation is performed in the middle section or large section to determine whether the starting point candidate condition is satisfied. If there is a section that is determined to satisfy the starting point candidate condition, and there is a section that is further determined to satisfy the restriction condition, in the section that is initially determined to satisfy the starting point candidate condition, If so, the level may be lowered to the small section, and if it is the large section, the level may be lowered to the middle section to specify where in the original section the starting point candidate condition is satisfied. In this way, the calculation amount can be reduced, and the starting point candidate can be specified more finely.

  In addition, the node specified in step S54 may be a node in a large section or a middle section, but a utility pole may be always specified.

  Returning to the description of FIG. 4, the end point candidate extraction processing unit 304 refers to the start point candidate data storage unit 303 and determines whether or not a necessary countermeasure location has been extracted (step S <b> 5). If no data is stored in the starting point candidate data storage unit 303, it means that no countermeasure area has been extracted, and the process ends. In this case, for example, the end point candidate extraction processing unit 304 generates a message to the effect that there is no countermeasure area and transmits it to the user terminal A. When the browser of the user terminal A receives a message from the power distribution facility plan support system server 3 that there is no point requiring countermeasures, the browser displays the message on the display device. The user can now understand that there is no problem. Alternatively, it may be determined that the designation of the elongation rate is insufficient.

  On the other hand, when it is determined that a necessary countermeasure location has been found, the end point candidate extraction processing unit 304 performs end point candidate extraction processing with reference to the planned system DB 31 and the facility management DB 33 (step S7). This process will be described with reference to FIGS. First, the end point candidate extraction processing unit 304 refers to the start point candidate data storage unit 303 and specifies one start point candidate (step S61). Then, all utility poles (or nodes) of another distribution system within a predetermined distance from the starting point candidate are extracted as end point candidates (step S63), and the end point candidate data is associated with the starting point candidate and the candidate route data storage unit It stores in 305 (step S65).

  Processing in steps S61 to S65 will be described with reference to FIGS. 12 and 13 are enlarged views of the part surrounded by the solid line 1000 in the system data shown in FIG. In addition, the road map is shown superimposed to discuss the distance. In FIG. 12, a distribution line A, a distribution line D, a distribution line B, and a distribution line C are shown. Then, it is assumed that a portion X is specified as a countermeasure required place or a starting point candidate range. Here, it is assumed that the utility pole D1 at the end of the distribution line D is specified as the current starting point candidate. In this case, as shown in FIG. 13, a power pole of a distribution line other than the distribution line D included in a circle P having a predetermined radius R centered on the power pole D1 is specified as an end point candidate, and the power pole D1 It is registered in the candidate route data storage unit 305 in association with each other. The end point candidates specified in the example of FIG. 13 are the utility poles A1, A2 and A3 belonging to the distribution line A, the utility pole B1 belonging to the distribution line B, and the utility poles C1, C2 and C3 belonging to the distribution line C. In addition, when newly installing a distribution line, since a power pole is set up along a road and a distribution line is built, a problem may arise even if only a linear distance is discussed. As shown in FIG. 13, a circle Q having a shorter radius than the circle P is in contact with the utility pole C1 of the distribution line C. However, when the distribution line is drawn along the road, the utility pole C2 is clearly closer than the utility pole C1. Therefore, in the present embodiment, it is assumed that there is no problem even if a plurality of end point candidates are extracted for the same distribution line. For the time being, a large radius R is set in order to find a wide range of end point candidates. Will be specified.

  An example of data stored in the candidate route data storage unit 305 in step S65 is shown in FIG. In the example of FIG. 14, a candidate column including a pole name, a distribution line name, a section number column, and a position (latitude / longitude) column, a utility pole name, a distribution line name column, and a section number column and position ( And a column of candidate end points including a column of (latitude / longitude) and a column of countermeasure required location flags. In this way, pairs of starting point candidates and end point candidates are registered. The countermeasure required place flag is set in step S83 if there is a countermeasure required place.

  Returning to the description of FIG. 11, the end point candidate extraction processing unit 304 determines whether all the start point candidates have been processed (step S <b> 67). If there is an unprocessed starting point candidate, the next starting point candidate is specified (step S69), and the process returns to step S63. On the other hand, when the processes for all the starting point candidates are completed, the process returns to the original process.

  In this way, an end point candidate that seems appropriate is associated with each starting point candidate.

  Returning to the description of FIG. 4, when the end point candidate extraction process in step S <b> 7 ends, the countermeasure-necessary point detection processing unit 306 refers to the start point candidate data storage unit 303, the candidate route data storage unit 305, and the planned system DB 31. One route (a pair of a starting point candidate and an end point candidate) is selected (step S9), and a countermeasure required point detection process is performed (step S11). This process will be described with reference to FIG. The countermeasure required point detection processing unit 306 refers to the starting point candidate data storage unit 303, the candidate route data storage unit 305, and the planned system DB 31, and the distribution line system data to which the starting point candidate belongs and the distribution line system data to which the end point candidate belongs. , Disconnect the distribution line immediately before the required countermeasure location or starting point candidate range, and connect the new required distribution point or starting point candidate to the end point candidate and the distribution line to which the end point candidate belongs. System data is generated, and the system data is stored in a storage device such as a main memory (step S71). Then, the first section connected to the power supply in the generated system data is specified (step S73).

  Next, a well-known three-phase power flow calculation is performed in the specified section, and the calculation result is stored in a storage device such as a main memory (step S75). For example, voltage or current or both are calculated. Then, it is determined whether the calculated voltage and / or current satisfies the limiting condition (step S77). If it is determined that the restriction condition is satisfied, it is set that there is a countermeasure point required (step S83), and the process returns to the original process. If the restriction condition is satisfied, it means that there is still a necessary countermeasure part and there is no effect of connecting the starting point candidate and the ending point candidate. On the other hand, if it is determined that the restriction condition is not satisfied, it is determined whether the identified section is a terminal section (step S79). If it is determined that the end section, the process returns to the original process. On the other hand, when it is determined that it is not the terminal section, the next section is specified (step S81), and the process returns to step S75.

  As described above, by cutting immediately before the required countermeasure location or starting point candidate range to which the origin candidate belongs, the necessary countermeasure location does not exist for the distribution line to which the origin candidate belonged, and processing becomes unnecessary. The amount of processing in step S11 can be reduced.

  Returning to the description of FIG. 4, the countermeasure-necessary part detection processing unit 306 determines whether there is a countermeasure-necessary part (step S <b> 13). With reference to the candidate route data storage unit 305, it is determined whether or not the countermeasure required location flag is ON. If it is determined that there is no countermeasure required part (the countermeasure required part flag is OFF), the paired data of the start point candidate and the end point candidate is stored in the new route candidate data storage unit 307 as a new route candidate (step S15). . For example, FIG. 16 shows an example of data stored in the new route candidate data storage unit 307. In the example of FIG. 16, a starting candidate column including a utility pole name, a distribution line name, a section number column, and a position (latitude / longitude) column, a utility pole name, a distribution line name column, and a section number column and position ( A destination candidate column including a latitude / longitude column, a road route column, a road distance column, and a cost column. At this stage, data is registered in the start candidate column and the end candidate column.

  Then, the countermeasure-necessary point detection processing unit 306 determines whether processing has been performed for all routes (step S17). If there is an unprocessed route, the process returns to step S9. On the other hand, when it is determined that the countermeasure-necessary point detection processing has been performed for all routes, the road route extraction processing unit 309 refers to the new route candidate data storage unit 307 and the map DB 32 to store new route candidate data. The shortest route passing on the road is searched for the end point candidate corresponding to the starting point candidate of the new route candidate represented by each record stored in 307, and the route data on the road and the distance data are set as the new route candidate data. Store in the storage unit 307 (step S19). This process is the same as the route search in the car navigation system, and since there are many well-known methods, detailed description is omitted here.

  When the process of step S19 is performed for all the new route candidates, the construction cost calculation unit 308 refers to the new route candidate data storage unit 307, estimates the construction cost for the new route candidate, and sets the new route candidate data storage unit. The information is stored in 307 and sorted by the construction cost (step S21). For the construction cost, calculate the required number of power poles by the distance obtained in step S19 / standard distance between power poles, and further calculate the wire length based on the distance, from (number of power poles x power pole unit price + wire length x wire unit price) Estimate construction costs.

  Then, the output data generation unit 310 refers to the map DB 32 and the new route candidate data storage unit 307, generates map data to which the new route candidate is added, and stores it in a storage device such as a main memory (step S23). In some cases, costs and ranks are added to the side of a new route candidate. Then, Web page data is generated from the new route candidate and map data, and transmitted to the user terminal A (step S25). The user terminal A receives the Web page data from the power distribution facility plan support system server 3 and displays it on the display device.

  For example, a screen as shown in FIG. 17 is displayed. FIG. 17 is a display example of the same place as that shown in FIGS. In the example of FIG. 17, distribution lines A, B, C, and D, a countermeasure point (or starting point candidate range) X, and a new route candidate 1700 from the utility pole D1 to the utility pole C2 are shown. In the upper part of the new route candidate 1700, the cost rank (first place) and the cost (3M yen) are appended as supplementary information 1701. In this way, the user can easily grasp which route costs in what order and how much cost. In FIG. 17, only one new route candidate is shown, but a plurality of new route candidates (for example, up to a predetermined order) may be shown together. Further, the screen may be configured by adding a list of new route candidates including rank and cost data to the side of the map or outside the map.

  After that, when the user actually determines a new route, he / she operates the user terminal A and clicks a new route candidate, for example. Then, the identification data of the selected new route candidate is transmitted from the user terminal A to the power distribution facility plan support system server 3. The distribution facility plan support system server 3 receives the identification data of the new route candidate and registers the data of the new route candidate stored in the new route candidate data storage unit 307 in the planned system DB 31. At that time, processing such as correcting data so that the distribution line is cut immediately before the point requiring countermeasures or the starting point candidate range is also performed.

  By performing the processing as described above, the user can automatically identify the location that needs to be handled or the starting point candidate range, and the newly established distribution route candidate for the distribution line only by specifying the rate of increase in load. Even without specialized knowledge, it will be possible to immediately determine an appropriate new route.

  Although one embodiment of the present invention has been described above, the present invention is not limited to this. For example, the power distribution facility plan support system server 3 may realize the above-described functions with a plurality of computers instead of a single computer. Furthermore, the functional block diagram shown in FIG. 2 does not necessarily correspond to program modules and files.

  Further, in step S63 in FIG. 11, only one utility pole that is the shortest in distance on the road may be specified for each distribution line within a predetermined distance from the starting point candidate. In that case, step S19 becomes unnecessary. In addition, the processing flow includes steps that may be changed in order or executed in parallel, and can be modified as long as the processing result does not change.

  Further, in step S71 of FIG. 15, the calculation is performed under the assumption that the distribution line is cut immediately before the point requiring countermeasure or the starting point candidate range, but it may be cut at another place, for example, the starting point candidate. . However, in such a case, it may be necessary to determine whether or not there is a countermeasure area remaining on the distribution line to which the origin candidate belongs.

It is a system outline figure concerning one embodiment of the present invention. It is a functional block diagram of a power distribution facility plan support system server. It is a functional block diagram of a normal computer. It is a figure which shows the main processing flow which concerns on one embodiment of this invention. It is a figure which shows an example of the data ((a) utility pole table, (b) adjacent relationship table, (c) distribution line table) stored in equipment management DB. It is a figure which shows an example of the data stored in contract information DB. It is a figure which shows an example of the data stored in driving information DB. It is a schematic diagram which shows an example of a power distribution system. It is a figure which shows the processing flow of a countermeasure location extraction process part. (A) is a figure which shows an example of a countermeasure required part data table, (b) is a figure which shows an example of a starting point candidate data table. It is a figure which shows the processing flow of an end point candidate extraction process. It is a figure for demonstrating an end point candidate extraction process. It is a figure for demonstrating an end point candidate extraction process. It is a figure which shows an example of the data stored in a candidate route data storage part. It is a figure which shows the processing flow of a countermeasure required part detection process. It is a figure which shows an example of the data stored in a new route candidate data storage part. It is a figure which shows an example of the data output to a user.

Explanation of symbols

1 LAN 3 Distribution Facility Planning Support System Server 31 Planning System DB 32 Map DB 33 Facility Management DB
34 Contract information DB 35 Driving information DB
301 Pre-processing unit 302 Countermeasure required point extraction processing unit 303 Start point candidate data storage unit 304 End point candidate extraction processing unit 305 Candidate route data storage unit 306 Countermeasure required point extraction processing unit 307 New route candidate data storage unit 308 Construction cost calculation unit 309 Road Route extraction processing unit 310 Output data generation unit

Claims (7)

A search is made from the power source using a database storing data related to the distribution system, and there is a section where at least one of current and voltage does not satisfy the first standard, and the second standard that is looser than the first standard is satisfied. A first distribution line in which there is no section is specified, data of a starting candidate that can be a starting point of a new distribution line included in a section after the section that does not satisfy the first criterion is specified, and a starting candidate data storage unit Specific steps to store in
Based on the distance from the starting point candidate included in the starting point candidate data storage unit, the end point candidate corresponding to the starting point candidate is specified in a distribution line different from the first distribution line, and the starting point candidate is stored in the candidate route data storage unit Storing in association with
Referring to the database and the candidate route data storage unit, generate data related to a distribution system assuming a newly established distribution line from the starting point candidate to the corresponding end point candidate, and relate to the assumed distribution system Using data, it is determined whether there is a section that does not satisfy the second criterion, and the pair of the starting point candidate and the end point candidate that is determined that there is no section that does not satisfy the second criterion is A route candidate specifying step to be stored in the candidate route data storage unit;
A distribution line new design support method executed by a computer. Referring to the map database, the shortest distance on the road from the starting point candidate to the corresponding end point candidate is searched, and route data and distance data from the starting point candidate to the end point candidate are stored in the candidate route data The distribution line new design drawing support method according to claim 1, further comprising a step of storing in a section corresponding to the pair of the start point candidate and the end point candidate. Using the data stored in the candidate route data storage unit, the cost from the starting point candidate to the end point candidate is estimated, and stored in the candidate route data storage unit corresponding to the pair of the starting point candidate and the end point candidate The distribution line new design drawing support method according to claim 2, further comprising the step of: The specific step includes
Identifying a small section that does not satisfy the first reference among a plurality of small sections included in a section that is first specified as a section that does not satisfy the first reference in the first distribution line,
The starting candidate data that can be the starting point of the newly installed distribution line included in the small sections and the sections after the small section that does not satisfy the first criterion is stored in the starting candidate data storage unit.
The distribution line new design drawing support method according to claim 1. The route candidate specifying step includes:
The first distribution line is cut immediately before the first section that does not satisfy the first reference or the second reference, and the first distribution line is connected to the second distribution line to which the end point candidate is connected. Generating data related to the temporary power distribution system in a state in which a distribution line from the end point candidate to the corresponding start point candidate is connected after the first reference or the second reference in section ,
Checking whether there is a section that does not satisfy the second reference for the second distribution line using data related to the temporary distribution system;
The distribution line new design drawing support method according to claim 1.   A program for causing a computer to execute the distribution line new design support method according to any one of claims 1 to 5. A search is made from a substation using a database storing data relating to a distribution system, and there is a section where at least one of current and voltage does not satisfy the first standard, and the second standard is looser than the first standard. The first distribution line in which the section that does not satisfy is specified, the candidate data that can be the starting point of the newly installed distribution line included in the sections after the section that does not satisfy the first criterion is specified, and the starting candidate data is stored Specific means for storing in the department,
Based on the distance from the starting point candidate included in the starting point candidate data storage unit, the end point candidate corresponding to the starting point candidate is specified in a distribution line different from the first distribution line, and the starting point candidate is stored in the candidate route data storage unit Means for storing in association with,
By referring to the database and the candidate route data storage unit, data relating to a distribution system assuming a newly established distribution line from the starting point candidate to the corresponding end point candidate is generated, and data relating to the assumed distribution line Is used to determine whether there is a section that does not satisfy the second criterion, and a pair of the starting point candidate and the end point candidate that has been determined that there is no section that does not satisfy the second criterion is a candidate route. Means for storing in the data storage;
Distribution line new design support equipment with

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