JPH0630544B2 - Distribution system operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an open / close state signal of a feeder circuit breaker of a distribution system,
An accident occurs in the distribution section by using the switching status signal of the division switch that divides the distribution line into multiple sections or interconnects the distribution lines, and the connection information signal that indicates how the distribution sections are connected to each other. The present invention relates to an improvement of an operating device of a power distribution system that detects an accident section when an accident occurs, and transmits power to a healthy power distribution section on the power source side and interchange power transmission to a healthy distribution section on the load side after the accident section.

(Prior Art) An operation device for a power distribution system of this type which has been conventionally used will be described with reference to FIG. In FIG.
F1 is a feeder circuit breaker (hereinafter simply referred to as a circuit breaker), S11 and S12 are section switches (hereinafter simply referred to as a switch), N11, N12 and N13 are power distribution sections (hereinafter simply referred to as section), and J1. , J2 are consumers of electric power belonging to the section N12, SJ1 and SJ2 are retractable switches for the consumers J1 and J2, B and G are master stations and slave stations of the remote monitoring device (hereinafter, SVT).
M master station and slave station), D and H are master stations and slave stations of the remote monitoring and control device (hereinafter referred to as TC master station and slave station), and A is an operating device of the distribution system. . Here, the switches S11 and S12 can be monitored and controlled by the operating device A, and the retractable switches SJ1 and SJ2 are switches that can be operated only on site.

The operating device A inputs the information to be transmitted to the SVTM slave station G, SVTM master station B about the open / closed state of the circuit breaker F1, and transmits the open / closed state of the switches S11, S12 to the TC slave stations H, TC master station D. Information is input and the states of the sections N11, N12, N13 are logically judged from the open / closed states of the circuit breaker F1, the switches S11, S12 to determine the distribution system shown in FIG. I try to understand the state of. The switches S11 and S12 are controlled by a code (not shown) for the operating device A to specify the switch to the TC master station D and a control direction (ON / OFF).
A code (not shown) designating "off" is transmitted, and TC master station D
Is performed by transmitting to the TC slave station H of the corresponding switch. On the other hand, the normal state of the distribution system shown in FIG. 3 is the breaker F1, the switches S11, S12, the retract switch SJ.
1, SJ2 are all in the "ON" state, sections N11, N12, N13 and customers J1, J2 are all in the energized state, and the operating device A changes the state of the distribution system each time the state of the distribution system changes. It is common to understand the current state of the power distribution system and store the latest state of the power distribution system.

In such a distribution system operation device, when an accident occurs in the customer J1 belonging to the section N12 of the distribution system shown in FIG. 3, the state of the circuit breaker F1, the switches S11, S12 changes from "ON" to "ON". The state of the sections N11, N12, N13 and the customers J1, J2 changes from "energized" to "blackout" respectively. Then, the operating device A extracts the section in which a power failure occurred and the switch to be controlled in order to restore the section to the energized state in order to restore the state of the distribution system before the accident occurred after the circuit breaker F1 was closed again. To do. Regarding the method of extracting the switch that should be controlled and the section that returns to this energized state,
The description will be made below with reference to FIGS.

First, FIG. 4 is a table that stores sections that can be connected to a circuit breaker and a switch (hereinafter referred to as a switch / section table), and FIG. 5 is a table that stores circuit breakers and switches that can be connected to a section. Table (hereinafter referred to as section / switch table), FIG. 6 is an area for storing the extraction result of the section to be restored to the energized state (hereinafter referred to as section area), and FIG. 7 is before the accident. Area for storing the extraction results of the switches to be controlled to restore the system (hereinafter referred to as the switch area), FIG. 8 is a work area for temporarily storing sections in the extraction processing described later (hereinafter, referred to as a work area). , Section work areas), and FIG. 9 shows work areas in which switches are temporarily stored in the extraction process described below (hereinafter referred to as switch work areas), as in FIG. is there.

Further, FIG. 10 shows a flow chart of the extracting process. That is, in step S10-1, the section area shown in FIG. 6 is initialized to store the extraction result, and in step S10-2, the switch area shown in FIG. 7 is initialized to store the extraction result. In step S10-3, the section connected to the circuit breaker F1 is shown in FIG.
It is searched from the section table and registered in the section work area shown in FIG. Next, in step S10-4, one section is taken out from the section work area and the number of sections is reduced by 1, and in step S10-5, the section extracted in step S10-4 is not registered in the section area. Register the condition and add 1 to the number of sections. Next, step 1
In 0-6, the circuit breaker or switch connected to the section registered in step S10-5 is searched from the section / switch table shown in FIG. 5, and the searched circuit breaker or switch is displayed before the accident occurs. Only the switches in the "ON" state are registered in the switch work area shown in Fig. 9 with the number of switches and the switches. Next, in step S10-7, one switch is taken out from the switch work area, registered in the switch table on condition that it is not registered in the switch table, and the number of switches is incremented by one. Next, in step S10-8, the section connected to the switch registered in step S10-7 is searched from the switch / section table as in step S10-3, and the section is registered in the section table among the searched sections. Register a non-existing section in the section work area and add the number of sections. Then, the above S10-7 and S10-8 are repeated for the number of switches registered in the switch work area,
Furthermore, S10-4, S10-5, S10-6, S10-
By repeating 7 and S10-8 for the number of sections registered in the section work area, the extraction results of FIGS. 6 and 7 can be obtained.

The operating device A sequentially controls the switches obtained as a result of the above-described processing to be “ON” after the circuit breaker F1 is closed again, but in order to make the section N12 to which the customer J1 belongs to be in the energized state. When the switch S11 is turned on, the breaker F1 is cut off again. Due to the re-interruption of the circuit breaker F1, the operation device A determines that the section N12 is the accident section. Further, since the switch S11 is out of power during the "ON" control (power transmission to the accident section), the switch S11 is not turned on for the next power transmission (hereinafter, this state is referred to as a lock). further,
After detecting the accident section N12, the operating device A performs the power transmission operation to the power-side healthy section N11 and the flexible power transmission operation to the load-side healthy section N13 after the accident section and ends the accident processing. The power transmission operation to the power-side healthy section N11 is performed by reclosing the circuit breaker F1, and the interchange power transmission operation to the load-side healthy section N13 after the accident section can be connected to the section N13. "ON" control.

By the way, in the conventional operation device of the distribution system, since the unit of detection of the accident detection section is the section unit, even if the customer side accident, the section to which the customer belongs is detected as the accident section. There is. In addition, in the event of a customer's accident, the maintenance staff of the power distribution system must go to the scene of the accident to detect the accident customer, and must also perform the power transmission operation to a healthy customer. Not only does a healthy customer who belongs to the same section as the house have a blackout for a long time, but the maintenance staff of the power distribution system also becomes very heavy.

(Problems to be Solved by the Invention) As described above, in the conventional operation device of the power distribution system, since the accident detection is performed on a section-by-section basis, when the customer side accident occurs, the power failure range The problem is that not only does the power supply become longer and the power outage time becomes longer, the service for supplying power to healthy consumers deteriorates, but also the burden on maintenance personnel of the distribution system becomes heavy when performing power transmission operations to healthy consumers. there were.

Therefore, an object of the present invention is to detect an accident on a customer-by-customer basis so that when a customer-side accident occurs, the power outage range can be minimized and the power outage time can be shortened to ensure soundness. To improve the service of supplying electricity to customers,
Moreover, it is an object of the present invention to provide a highly reliable operation device of a power distribution system, which can significantly reduce the burden on maintenance personnel of the power distribution system when transmitting power to healthy consumers.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, in the present invention, the open / close state signal of a feeder circuit breaker of a distribution system and a plurality of distribution lines derived from this feeder circuit breaker are provided. By using the switching status signal of the division switch that divides into sections or interconnects the distribution lines, and connection information that indicates how the distribution lines are connected to each other, when the accident occurs in the distribution section, After the feeder circuit breaker is first interrupted, the section switches are turned on after the circuit is closed again, and the feeder circuit breaker is used again to detect the faulty section consisting of the distribution line and the customer connected to it. In an operating device of a power distribution system adapted to perform flexible power transmission operation to a power distribution side healthy power distribution section, a feeder circuit breaker of the power distribution system, a switch of each power distribution section, and each distribution section. Monitoring / control means for monitoring / controlling the retractable switch of the consumer belonging to the section, and consumer information for storing, for each of the distribution sections, the retractable switch of the consumer belonging to the distribution section as searchable information The storage means and the section switch on the power supply side that transmits power to the accident section through the monitoring / control means after detection of the accident section are turned on and controlled to first perform trial power transmission to the distribution line, and the feeder breaker does not cut off. On the basis of the result of the discrimination by the accident discriminating means that it is a consumer accident connected to the distribution line on the condition The customer search means for searching the corresponding customer's retractor switch and the customer retractor switch searched by the consumer search means are monitored / monitored.
An accident customer is judged on the condition that the feeder circuit breaker is re-cut off through the control means, and a power transmission operation to a sound customer other than this accident customer is performed after the feeder circuit breaker is reclosed again. And an accident recovery means for carrying out.

(Operation) In the above-mentioned operating device of the distribution system, an accident occurs in the distribution section by using the switching status signal of the feeder breaker of the distribution system, the switching status signal of the classification switch, and the connection information signal between the distribution sections. After detecting the accident section, the accident discrimination means performs a trial transmission operation to discriminate whether the accident is a distribution line accident or a customer accident, and the consumer is conditioned on the condition that the discrimination result is a customer accident. The search means searches the consumer information storage means for the customers and their retracted switches that belong to the accident section, and the accident restoration means controls the retracted switches of the retrieved customers to determine the accident consumer. In addition, the power transmission operation to other healthy customers other than the accident customer will be performed.

(Example) Hereinafter, the present invention will be described with reference to an example shown in the drawings.

FIG. 1 shows a configuration example of an operating device for a power distribution system according to the present invention, and the same parts as those in FIG. 3 are designated by the same reference numerals. In FIG. 1, F1 is a circuit breaker and S1
1, S12 is a switch, N11, N12, N13 are sections, J1, J
2 is a power consumer belonging to the section N12, SJ1, SJ2
Is a retractable switch for customers J1 and J2, and B and G are SVTMs.
A master station, slave stations, D and H are TC master stations, slave stations, and O is an operating device according to the present invention, which is configured by including the above-mentioned conventional operating device A and each element described later. here,
Both the switches S11 and S12 and the retractable switches SJ1 and SJ2 are constructed so that they can be monitored and controlled from the operating device O.

On the other hand, in the above-described operating device O, as shown in FIG. 2, O1 is divided into sections N11, N12, N13 for each section N11, N13.
Consumer information belonging to 12, N13, that is, consumer J1,
A table (hereinafter referred to as a section / customer table) as a customer information storage unit that stores J2, ... And its retracting switches SJ1, SJ2, ..
Conducts trial transmission operation after detecting the faulty section of the distribution system,
An accident discriminating means for discriminating whether the accident is a distribution line accident or a customer accident, and O3 is a customer belonging to the above-mentioned accident section on condition that the discrimination result by the accident discriminating means O2 is a customer accident. A customer search means for searching the pull-in switch from the section / customer table O1 and O4 controls the pull-in switch of the customer searched by the customer search means O3 to determine an accident customer, and The figures show accident recovery means for performing power transmission operations to healthy consumers other than the accident consumer.

Next, the operation of the operation device of the power distribution system configured as described above will be described.

In the power distribution system shown in FIG. 1, when an accident occurs in the customer J1 who belongs to the section N12, the operating device A should perform the same process as the above-mentioned conventional operation and control the section to restore the energized state. The switches S11 and S12 that have been extracted in advance and extracted after the circuit breaker F1 is closed again.
"ON" is sequentially controlled to detect the accident section N12. The accident section N12 can be detected by performing the same processing as the conventional one. At this time, the switch S11 and the retractable switches SJ1 and SJ2 are locked.

Next, the accident discriminating means O2 of the operating device O controls the switch S11 to be "on" to discriminate whether the distribution line accident is a customer accident after the circuit breaker F1 is closed again. At this time, since the retractable switches SJ1 and SJ2 of the customers J1 and J2 are locked, the circuit breaker F1 is not interrupted again. The accident determination means O2 of the operating device O is the switch S.
When the circuit breaker F1 is not interrupted again as a result of the "ON" control of 11, it is determined that it is not a distribution line accident but a customer accident. Next, after the customer search means O3 of the operating device O determines that there is a customer accident, the customer belonging to the previously known accident section N12 and the retract switch for this customer are used as customer information. The section / customer table O1 shown in FIG. 2 is searched, and the retractable switches SJ1 and SJ2 of the searched customers J1 and J2 are sequentially controlled to be “ON”. In this case, the accident recovery means O4 of the operating device O is the retracting switch SJ1.
"ON" is controlled to restore the customer J1 to the energized state, but since the customer J1 has an accident, the circuit breaker F1 is interrupted again. And this breaker F
Due to the state change of 1, the accident recovery means O4 of the operating device O determines that the customer J1 is an accident customer. At this time, the retracting switch SJ1 is locked again. Furthermore, the operating device O
After the circuit breaker F1 is closed again and again, the accident recovery means O4 controls the switch S11 to be “ON” to energize the section N12 and energize the healthy consumers J2 other than the accident consumer J1. To this end, the retracting switch SJ2 is controlled to be "ON", and further the switch S12 is controlled to be "ON".

As described above, in the present embodiment, the breaker F1 of the distribution system is
The switching status signal of the switch, the switching status signals of the switches S11 and S12 that divide the distribution line into a plurality of sections and interconnect the distribution lines, and how the sections N11, N12, and N13 are connected to each other. A distribution system that uses the connection information signal to detect an accident section when an accident occurs in the above section, and perform power transmission operation to a healthy section on the load side and flexible transmission operation to a healthy section on the load side after the accident section. In this operating device, the accident is detected for each of the customers J1 and J2. Therefore, when an accident occurs on the customers J1 and J2 side, the power outage range can be minimized as compared with the conventional operating device. Since the power outage time can be shortened as well as being stopped, it is possible to improve the service of supplying power to healthy consumers, and further, the maintenance staff of the distribution system when performing the power transmission operation to healthy consumers. Burden of Can be significantly reduced.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be carried out without departing from the scope of the invention.

[Effects of the Invention] As described above, according to the present invention, an accident is detected for each customer. Therefore, when a customer-side accident occurs, the power outage range can be minimized. Along with this, it is possible to shorten the power outage time and improve the service of supplying power to healthy customers, and it is possible to significantly reduce the burden on maintenance personnel of the distribution system when performing power transmission operations to healthy customers. It is possible to provide a highly reliable operating device of a power distribution system.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an operating device of a power distribution system according to the present invention, and FIG. 2 is a view showing a section / customer table for explaining a customer unit accident detection method in the embodiment, FIG. 3 is a block diagram showing a conventional operating device of a power distribution system, and FIGS. 4 to 9 are diagrams for explaining a method of extracting a restoration section and a control switch in FIG. 3, respectively. FIG. 5 is a view showing a switch / section table, FIG. 5 is a view showing a section / switch table, FIG. 6 is a view showing a section area, and FIG.
The figure shows the switch area, FIG. 8 shows the section work area, and FIG. 9 shows the switch work area.
FIG. 0 is a flow chart for explaining the processing contents of the extraction method. A, O ... Operating device, B ... SVTM master station, D ... TC master station,
G ... SVTM slave station, H ... TC slave station, F1 ... breaker, S
11, S12 ... Switch, N11, N12, N13 ... section, J1, J
2 ... Consumer, SJ1, SJ2 ... Retractor switch for J1 and J2, O1 ... Section / customer table, O2 ... Accident determination means, O3 ... Customer search means, O4 ... Accident recovery means.

Front page continuation (72) Inventor Akira Takahashi 1st in Toshiba Fuchu factory, Fuchu, Tokyo (72) Inventor Hiroshi Suzuki 1st in Toshiba Fuchu, Tokyo Fuchu factory (72) Inventor Hiroki Kono 1-1-1, Shibaura, Minato-ku, Tokyo Inside Toshiba Head Office

Claims (1)

[Claims] 1. A switching status signal of a feeder breaker of a distribution system, a switching status signal of a division switch for dividing a distribution line derived from the feeder breaker into a plurality of sections and interconnecting the distribution lines, and By using connection information indicating how the distribution lines are connected to each other, when the accident occurs in the distribution section, the feeder circuit breaker is closed for the first time after the circuit breaker is closed again, and the feeder is sequentially turned on. In the operation device of the distribution system, which detects the accident section consisting of the distribution line and the customer connected to it by re-cutting the circuit breaker, and performs flexible power transmission operation to the power supply side healthy distribution section, A monitoring / control means for monitoring / controlling the feeder circuit breaker of the distribution system, the switch of each distribution section, and the pull-in switch of a customer who belongs to each distribution section; For each power distribution section, a customer information storage unit that stores the retractable switch of a customer who belongs to the power distribution section as searchable information, and after detecting the accident section, transmits power to the accident section through the monitoring / control means. Accident determination means for controlling the power supply side section switch to perform trial power transmission to the distribution line first, and to determine that it is a customer's accident connected to the distribution line on condition that the feeder breaker does not cut off. And a customer search means for searching the pull-in switch of the corresponding customer from the customer information storage means based on the result of the judgment of the customer accident by the accident judgment means, and the customer search The entrance switch of the customer searched by the means is entered and controlled through the monitoring / control means, and the accident customer is judged on the condition that the feeder breaker is cut off again, An operation device for a distribution system, comprising: an accident recovery means for performing power transmission operation to a sound consumer other than the accident consumer after the circuit breaker is reclosed again.