JPH0433519A - Operating condition monitoring system for distribution line - Google Patents

Abstract

PURPOSE:To quickly cut off an accident division by transmitting condition data and detection data to a monitor station, and operating the driving data on the distribution equipment within the division, where the accident is occurred, with an arithmetic unit, and controlling the driving of the distribution equipment, according to the transmission result, with the controller in an operating station. CONSTITUTION:The controller 8 in each operating station On writes detection data and condition data into a data frame DFn, and transmits them to a monitor station every specified time. The communication device 13 in the monitor station W receives this data frame DFn, and CPU 10 operates the driving data on each switch Sn based on the newest detection data and the condition data in each operating station On, and writes them into two RAMs 11a and 11b alternately. According to this detection data, when the accident occurrence division is discriminated, it transmits the optimum data corresponding to the accident occurrence division to each operating station Sn.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to a power distribution line that can monitor the presence or absence of accidents such as ground faults in a distribution network, and control the drive of power distribution equipment in response to the occurrence of an accident. Regarding the operating status monitoring system.

[Conventional technology]

In general, when an accident such as a ground fault occurs in a power distribution network, various distribution methods are used to detect the accident early, isolate the faulty section from the distribution network, and ensure power transmission to a healthy section. A wire monitoring system has been proposed. Conventionally, this type of system has been known to simply display data transmitted from an operating station installed in the power distribution section, and in order to isolate the fault section according to the displayed data, high-voltage power distribution networks, etc. The accident section separation device seen in

[Problem to be solved by the invention]

However, in the above-mentioned fault section isolation device, the fault section is separated by repeatedly interrupting and closing the circuit between the substation and the distribution network by coordinating the sectional switches in a timed manner. There were problems with frequent power outages and time-consuming recovery from accidents.

This invention was made to solve the above problems, and its purpose is to quickly disconnect the faulty section when an accident occurs in the power distribution network, and to reduce the time required for restoration. The purpose of this invention is to provide a monitoring system for power distribution lines that can shorten the time required.

[Means to solve the problem]

In view of the above circumstances, in the present invention, an operating station is provided for each section of the distribution line in the distribution network, and each operating station is equipped with a control device for controlling the drive of the distribution equipment in each section, and a control device for controlling the drive of the distribution equipment in each section, and and a communication device capable of transmitting and receiving status data regarding the state of the power distribution equipment, detection data of the detection device, and drive data for the power distribution equipment, and for monitoring each of the operation stations. The monitoring station includes a communication device capable of transmitting and receiving each data, a calculation device that calculates drive data for each power distribution device based on the detection data and status data, and a calculation device that calculates drive data calculated by the calculation device. a storage device for storing data, a determination device for determining the section where the accident occurred according to the detected data, and a drive data for the power distribution equipment in the section where the accident occurred is read out from the storage device based on the determination by the determination device and output to the communication device. The communication device of each operating station and the communication device of the monitoring station are connected by a communication line.

Further, the control device of the operating station transmits the detection data and status data via a communication device at predetermined time intervals, and the storage device of the monitoring station stores power distribution information calculated based on each data received from the operating station. It consists of two storage devices for alternately storing driving data for the equipment, and according to the data stored in one of the storage devices that is not in operation, the output device of the monitoring station outputs the driving data corresponding to the section where the accident occurred. It is desirable to output data.

Furthermore, when the determination device of the monitoring station detects the occurrence of an accident based on the detection data, the determination device corresponds to the next predicted accident occurrence section based on the drive data transmitted to each operation station. It is desirable to include another computing device for storing drive data in the other storage device which was previously active and is currently inactive.

[Effect]

In this invention, in the operating station, state data regarding the state of the operating station and detection data of the power distribution equipment detected by the detection device are transmitted by the control device to the monitoring station via the communication device. The communication device of the monitoring station receives each of these data via the communication line. The determination device determines the section where the accident occurred according to the detected data, and the calculation device calculates drive data for the power distribution equipment in the section where the accident occurred based on each data. The calculation result is then stored in the storage device.

Further, according to the determination by the determination device, the output device reads drive data of the power distribution equipment in the section where the accident occurred from the storage device, and outputs it to the communication device. Then, the drive data is transmitted from the communication device of the monitoring station to the communication device of the operating station via the communication line. According to this transmission result, the control device of the operation station controls the driving of the power distribution equipment.

Further, it is preferable that the control device of the operation station transmits the detection data and status data at predetermined time intervals, and that the monitoring station is provided with two storage devices. In this case, the monitoring station stores drive data for the power distribution equipment calculated based on each data received from the operation station in one of the two storage devices that is not in operation. be able to. Then, according to the stored data, the output device of the monitoring station can output drive data corresponding to the section where the accident occurred.

Furthermore, it is preferable that the monitoring station includes a computing device different from the computing device. In this case, when an accident occurrence section is detected, another calculation device calculates drive data corresponding to the next predicted accident occurrence section based on the drive data sent to each operation station, and It can be stored in the other storage device that is currently inactive.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a monitoring system for power distribution lines embodying the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, a power distribution network 1 is configured in a loop shape, and power is transmitted from a substation 2. As shown in FIG.

The distribution line 3 of the distribution network 1 has multiple sections (for example, 20 sections)
Automatic section switches 5n (n=1 to 20) constituting power distribution equipment are installed in each power distribution section. The distribution network 1 includes a plurality of operating stations 0n (
n=1 to 20) are connected, and each operating station On is connected by a communication line 4 made of an optical fiber. Further, the communication line 4 is connected to a monitoring station W via a relay station 5, and various data are transmitted and received between each operating station On and the monitoring station W via this communication line 4.

As shown in FIG. 2, each operating station on has a drive device 6 for driving the switch Sn, a current in each power distribution section,
It includes a detection device 7 for detecting voltage, zero-sequence current, zero-sequence voltage, phase, and the like.

Furthermore, each operating station On includes a control device 8 consisting of a computer, and a communication device 9 capable of mutually converting optical communication signals and electrical signals.

The data frame DFn transmitted from each operating station On at predetermined time intervals is composed of identification data, detection data, status data, and drive data, as shown in FIG.

The identification data is the operating station O to which each data frame DFn belongs.
The detection data indicates the current, voltage, zero-sequence current, zero-sequence voltage, phase, etc. detected by the detection device 7 of each operating station On. The status data indicates the open and closed states of the switch Sn at each operating station On, and is for self-diagnosing each operating station On. Further, the drive data is data for driving the switch Sn of each operating station On in accordance with a predetermined opening/closing order in order to disconnect the accident section and quickly transmit power to a healthy section when an accident occurs.

On the other hand, as shown in FIG.
, determination device 10b, output device]-0c and a central processing unit (hereinafter referred to as CPU) that constitutes another arithmetic device 10d.
10 and random access memories (hereinafter referred to as RAMs) lla as two storage devices for storing drive data.

11b, and a read-only memory (hereinafter referred to as ROM) 12 that stores programs used for calculations of various data by the CPU 10. Each RAMI]
, a, 1 l b, as shown in FIG. 5, have an address area indicating each section of the distribution line 3, and a data area in which drive data of the switches Sn regarding all operating stations On are stored for each address. We are prepared. The monitoring station W also includes a communication device 13 that performs photoelectric conversion of each data in the data frame DFn and transmits and receives the data to and from each operating station On.

Then, the determination device 10b of the CPU10 uses the detection data and RO received from each operation station On by the communication device 13.
The event occurrence interval is determined based on the program M12. Furthermore, each arithmetic unit 10a, 10d of the CPU 10 calculates drive data suitable for the switch Sn of each operating station On based on the detection data and status data, and calculates drive data suitable for the switch Sn of each operating station On based on the detection data and status data. The data is stored alternately in one of the RA and M that is not in rewriting operation (inactive).

In addition, when the accident occurrence section is determined, each calculation device 10a, 10d of the CPU 10 calculates drive data corresponding to the next predicted accident section according to the program, and calculates 2.
Of the two RAMs 11a and llb, the other RAMI was in the process of rewriting (currently inactive), 1a, 1l
The drive data is stored in b. Furthermore, the output device of the CPU10], after determining the section where the accident occurred and storing the drive data, the one RAM 11a, 1lb
The drive data is read from and output to each operating station On.

In the monitoring system for the distribution line configured as described above, the control device 8 of each operating station On writes detection data and status data in the data frame DFn,
It is transmitted to the monitoring station W at predetermined time intervals. The communication device 13 of the monitoring station W receives this data frame DFn and sends the CPU10
calculates the drive data of each switch Sn based on the latest detection data and status data of each operating station On, and calculates the drive data of the two RAs.
Write alternately to MP, 1 a, and 1 lb.

When the accident occurrence section is determined according to the detected data, the CPU 10 of the monitoring station W interrupts calculation and rewriting of the drive data, and transfers the optimum drive data corresponding to the accident occurrence section to one of the RAMs in non-rewriting operation. , 1 a,
1 Read from lb. After writing the drive data to the data frame DFn, each operating station Sn
Send to. Further, based on the drive data transmitted at this time, the CPU 10 calculates drive data corresponding to the next predicted accident occurrence section and stores it in the other RAM 11a, llb that was being rewritten earlier.

On the other hand, the control device 8 of each operating station On reads its own data frame DFn from the received data frame DFn based on the identification data, and controls the switch Sn via the driver device 6 according to the drive data in the data frame DFn. control. Following that,
The state of the power distribution line 3 in each section is detected by the detection device 7 of each operating station On, and the detected data is written into a data frame DFn by the control device 8 and transmitted to the monitoring station W.

As described above, in this embodiment, when an accident occurs in the distribution network 1, the drive data of each switch Sn is transmitted from the monitoring station W to each switch Sn based on the detection data and status data at the operating station On of each distribution section. Since the data is transmitted to the operating station On, by operating the switch Sn based on the drive data, only the accident section can be disconnected from the power distribution network 1 at an early stage, and restoration work can be performed quickly.

In addition, the CPU 1.0 arithmetic unit 10a in the monitoring station W,
The latest drive data calculated by 10d is
AMI], a, and 1 lb, so even if an accident occurs while drive data is being written to one R, AM, the data will be stored in the other RA.
It is possible to read drive data from M and take prompt action.

Furthermore, when determining the section where the accident occurred, drive data corresponding to the section where the accident occurred is sent to each operating station On, and at the same time,
Based on that drive data, drive data corresponding to the next predicted accident occurrence section is calculated and stored in RAM, so even if any accident occurs, appropriate drive data can be secured and flexibly I can handle it.

〔Effect of the invention〕

As detailed above, this invention has the excellent effect of being able to quickly disconnect the faulty section and shortening the time required for restoration when an accident occurs in the power distribution network. do.

[Brief explanation of the drawing]

Fig. 1 is a wiring diagram showing a monitoring system for power distribution lines embodying this invention, Fig. 2 is a block circuit diagram showing each operation station, Fig. 3 is a block circuit diagram showing a monitoring station, and Fig. 4 is a data Frame Configuration Diagram FIG. 5 is an explanatory diagram showing the internal configuration of the RAM in the monitoring station. ■...Distribution line network, 3...Distribution line, On...Operation station. Sn... Automatic division switch, 7... Detection device, 8...
・Control device, 9...Communication device, W...Monitoring station, 10
a... Arithmetic device, 10b... Judgment device, 10c...
・Output device. 10d...Another arithmetic device, ], 1a, llb...Random access memory as a storage device, 13...Communication device.

Claims (1)

[Scope of Claims] 1. An operating station is provided for each section of the distribution line in the distribution network, and each operating station is equipped with a control device for controlling the drive of the distribution equipment in each section, and a control device for preventing accidents on the distribution line. A monitoring station for monitoring each of the operating stations is provided with a detection device for detecting, and a communication device capable of transmitting and receiving state data regarding the state of the operating station, detection data of the detection device, and drive data for the power distribution equipment. includes a communication device capable of transmitting and receiving each of the data, a calculation device that calculates drive data for each power distribution device based on the detection data and status data, and a storage device that stores the drive data calculated by the calculation device. a determination device that determines the section where the accident occurred according to the detected data; and an output device that reads drive data of the power distribution equipment in the section where the accident occurred from the storage device based on the determination by the determination device and outputs it to the communication device. An operating status monitoring system for a power distribution line, characterized in that: a communication device of each of the operating stations and a communication device of the monitoring station are connected by a communication line. 2. The control device of the operating station transmits the detection data and status data via a communication device at predetermined time intervals, and the storage device of the monitoring station stores power distribution equipment calculated based on each data received from the operating station. The output device of the monitoring station includes two storage devices for alternately storing driving data for the accident, and according to the data stored in either storage device that is not in operation, the output device of the monitoring station outputs the driving data corresponding to the section where the accident occurred. The operating status monitoring system for a power distribution line according to claim 1, wherein the system outputs: 3. When the determination device of the monitoring station detects the occurrence of an accident based on the detection data, the monitoring station determines the driving data corresponding to the next predicted accident occurrence section based on the driving data sent to each operating station. 3. The operating status monitoring system for a power distribution line according to claim 2, further comprising another arithmetic device for storing the information in the other storage device which was previously in operation and is currently inactive.