JPH0284014A - Distribution line monitoring system - Google Patents

Abstract

PURPOSE:To cope quickly with fault by operating operational command data based on detection date and state data at respective slave stations and storing the operated command data. CONSTITUTION:Each slave station K writes detection data end state data into a data frame and transmits them to a master station 2 every predetermined time. The CPU 11 at the master station 2 operates operational command data for each slave station K based on the newest detection data and state data at each slave station K then writes the operated command data into two RAMs 8, 9. When the CPU 11 at the master station judges occurrence of fault based on the newest detection date, operation and writing of the operational command data are stopped immediately through an interruption routine. At the same time, faulty distributing section is judged and optimal corresponding data are read out from the other RAM 9. Then the data are written into a data frame and transmitted through a communication unit 7 to respective slave stations K.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a distribution and N line monitoring system that controls the operation of power distribution equipment when an accident occurs on a distribution line.

[Prior Art] Various power distribution line monitoring systems have been proposed for power distribution networks from the viewpoints of early detection of faulty sections, separation of faulty sections, and early transmission of power to healthy sections. In conventional remote monitoring systems, when accident data is sent from a slave station, that data is often displayed and recorded.
The commonly used fault section is separated by, for example, an automatic fault section separation device installed on the voltage distribution line.

[Problems to be Solved by the Invention] However, the above-mentioned automatic fault section isolation device requires timed coordination of automatic section switches to separate the fault section in the order of shutting off the substation, reopening the circuit, shutting it off again, and opening the circuit again. Therefore, PpI in the healthy section! There are problems in that accidents such as the above are repeated and it takes a long time to recover from the accident.

The purpose of the present invention is to solve the above problems by providing quick response,
The objective is to provide a flexible power distribution line monitoring system.

[Means for solving the problem] In order to achieve the above object, the invention of book 114w11 has the following features:
a drive control means for driving and controlling power distribution equipment provided in each section of a power distribution line of a power distribution network based on operation command data;
A slave station comprising a detection means for detecting an accident on a distribution line, a communication means for transmitting status data related to the slave station and detection data of the detection means and receiving operation command data, and detection of each slave station. a receiving means for receiving data and status data; a Ps calculation stage for calculating operation command data for optimal drive control of each %FL unit for each section in the event of an accident based on the various data; a storage means for storing each calculated operation command data; a determination means for determining an accident zone based on the latest detected data regarding the slave station that has been transmitted; and a determination means for storing the operation command data corresponding to the accident zone. The gist thereof is that the main station is equipped with a transmitting means for reading information from the transmitting means and transmitting means for transmitting data to each slave station.

The second invention provides a drive control means for driving and controlling power distribution equipment provided in each section of a power distribution line of a power distribution network based on operation command data, a detection means for detecting an accident on the power distribution line, and a detection means for detecting an accident on the power distribution line; A slave station comprising a communication means for transmitting status data related to the station and detection data of the detection means and receiving operation command data, and receiving detection data and status data transmitted from each slave station at predetermined time intervals. 8I calculation means for calculating operation command data for optimal drive control of each Nn device for each section in the event of an accident; and various data transmitted at predetermined time intervals by the calculation means. two storage means that alternately store each operation command data calculated based on the data, a determination means that determines the accident zone based on the latest detected data regarding the slave station that has been transmitted, and a when the accident section is determined based on the detection data of, the transmission means reads the operation command data corresponding to the accident section from one of the two storage means that is not being translated, and transmits it to each slave station; Its gist is that it consists of a master station and a master station.

The third invention provides a drive control means for driving and controlling distribution N equipment provided in each section of a distribution line of a distribution network based on operation command data, a detection means for detecting an accident on the distribution line, and a detection means for detecting an accident on the distribution line. A slave station comprising a communication means for transmitting status data related to the slave station and detection data of the detection means and receiving operation command data; a receiving means for receiving data, an 8II calculating means for calculating the optimum drive 9111+1 operation command data for each power distribution device in the event of an accident for each section, and various data transmitted at predetermined time intervals by the calculating means. two storage means that alternately store each operation command data calculated based on the data, a determination means that determines the accident zone based on the latest detected data regarding the slave station that has been transmitted, and a when determining the accident section based on the detected data of the storage means, transmitting means reads operation command data corresponding to the accident section from one of the two storage means that is not being rewritten and transmits it to each slave station; When the determining means determines that an accident has occurred, the transmitting means calculates operation command data corresponding to a subsequent section accident expected based on the operation command data transmitted to each slave station, The gist thereof is that the main station comprises a master station and a second calculation means for storing data in the other storage means.

[Operation 1] Therefore, in the first invention, each slave station transmits detection data and status data of the slave station to the master station. Based on these various data, the calculation means of the master station calculates operation command data for optimal drive control of each power distribution device in the event of an accident. The calculation result is stored in the storage means.

When the determining means determines that an accident has occurred based on the latest detection data regarding the slave stations, the determining means reads operation command data from the storage means and transmits it to each slave station.

In the second invention, each slave station transmits detection data and status data of the slave station to the master station. The calculating means 14B calculates operation command data for optimal drive control of each power distribution device for each section in the event of an accident based on various data transmitted from the slave station at predetermined intervals. , the calculation means alternately stores the calculation results in the two storage means, and when the determination means determines that an accident has occurred, the calculation means stores the calculation results in the accident section from one of the two storage means that is not being rewritten. Reads the corresponding operation command data and sends it to each slave station.

In the third invention, each slave station transmits detection data and status data of the slave station to the master station. The calculation means of the master station calculates operation command data for optimal drive control of each power distribution device for each section in the event of an accident, based on various data transmitted from the slave station at predetermined intervals. The calculation means alternately stores the calculation results in two storage means, and when the determination means determines that an accident has occurred, one of the two storage means that is not being rewritten corresponds to the accident section. Extracts the operation command data to be used and sends it to each slave station. At the same time, the second storage means calculates operation command data corresponding to a subsequent section accident based on the transmitted operation command, and stores it in the other storage means that was in the middle of the 8 conversion.

[Example 1] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

FIG. 1 shows a loop-shaped power distribution network 3 monitored by a master station 2 located at a monitoring station 1, and power is transmitted from a substation H to the loop-shaped power distribution network 3. In each section of the distribution line 4 of the loop-shaped distribution network 3, a large number of automatic section switches SS (20 in this embodiment) are arranged as distributors.

A communication line 5 is arranged in parallel to the loop-shaped power distribution network 3, and a slave station K provided corresponding to the switch SS is arranged on this communication line 5.

The communication 15 is connected to a repeater 6 to the master station 2 that monitors each slave station K.
connected via. Note that this communication 15 employs an optical fiber communication circuit.

Next, the electrical configuration of the master station 2 will be explained in detail with reference to FIG.

The master station 2 includes a communication device 7 as a receiving means and a transmitting means, a CPL as a first and second calculating means, and a determining means.
llll, a RAM 8.9 serving as two storage means for storing operation command data, and a ROM 10 in which calculation programs necessary for the CPU 11 to perform calculations are stored in advance.

Tsushin H7 is an optical communication signal and 7! ! It has a mutual signal conversion function and is connected to the communication line 5 between the master station 2 and slave stations.

The CPU 11 is manufactured by Tsushin v! 7 calculates the optimum operation command data for each slave station K based on the latest detection data and status data regarding each slave station K received at each predetermined time and the calculation program stored in advance in the ROM 10, and The operation command data of are alternately written into RAM8.9. This operation command data indicates the order of opening and closing of the corresponding switch SS, delayed opening or closing, etc. for disconnection of the faulty section and early power transmission in the healthy section when an accident occurs in each power distribution section. This is operation procedure data. When the CPU 11 determines that an accident has occurred in the power distribution a4 based on the latest detection data and status data, the RAM 9 of one of the two storage means that is not being rewritten is
It reads out the operation command data stored in , and transmits the operation command data to each slave station via the communication device 7 as a data frame D. Further, the CPU 11 calculates operation command data corresponding to an accident expected afterward based on the transmitted operation command data, and stores it in the other RAM 8 which was being rewritten.

The internal structure of the RAM 8.9 is the same as shown in FIG. 3 shows a frame in which drive control data for controlling the drive of the switch SS every time is stored. Therefore cpui
When i reads the operation command data due to the occurrence of a ground fault, the address of the frame corresponding to the fault section of the distribution line 4 where the ground fault or the like has occurred is searched. Then, the operation command data for each slave station in the corresponding frame is sequentially read out.

Next, the configuration of each slave station will be described in detail.

Figure 3 shows the electrical configuration of one slave station installed in the switch ssi of the distribution line 4, and is provided for each distribution section managed by the communication device 12, I control device 13, and slave station K. It is comprised of various detection devices 14 as detection means such as a current transformer, voltage detector, zero-phase current detector, zero-phase voltage detector, etc., and a drive device 15 as drive control means.

The communication device 12 has a mutual conversion function between optical communication signals and electrical signals, and is connected to the communication line 5 between the master station 2 and the slave station.

The control device 13 is composed of a CPU, ROM, RAM, etc., and controls the status of current, voltage, phase, etc. of the power distribution section managed by the slave station K based on the detection data and status data from the navigation detection device 14. Detect and send the result to communication device 1
2 to 111282. In addition, the control device 1
3 reads operation command data from the master station 2 via the communication device 12, and drives and controls the switch SS by the drive device 15 based on the operation command data.

In this embodiment, the data frame D for the 8 slave stations constituting the data frame D is as shown in FIG. The data shows that. The detection data includes data on current, voltage, zero-sequence current, zero-sequence voltage, phase, etc. detected by the various detection devices 14. Further, the status data includes self-diagnosis data for opening and closing the switch SS and 3 for the slave station. Further, the control data is operation command data for driving and controlling the switch SS from the master station 2.

Communication I! 5, the data frame D transmitted and received from each slave station K to the parent 82 is transmitted through the communication line 5 in one direction.
direction).

The functions and effects of the distribution line monitoring system configured as described above will be explained.

As shown in FIG. 1, each slave station writes detection data and status data into a data frame D and transmits it to the master station 2 at predetermined time intervals. The master station 2 receives the data frame D every predetermined time via the communication device @7. CPt of master station 2
Jll calculates operation command data for each slave station based on the latest detection data and status data for each slave station, and sends two R
Write alternately to AM8°9.

When the CPU 11 of the master station 2 determines that an accident has occurred based on the latest detection data, it immediately stops calculating and rewriting the operation command data using an interrupt routine, and also determines the faulty power distribution section and responds accordingly. The optimal operation command data is read from the RAM 9 that is not being rewritten.

Then, the operation command data is written in the data frame D and transmitted to each slave station via the communication device 7. Also,
Based on the operation command data transmitted at that time, the CPLll calculates operation command data corresponding to an accident expected later, and writes it into the RAM 8 which was being rewritten.

On the other hand, each slave station reads its own data frame D out of the transmitted data frames D via the communication device 12, and controls the control yJ device 13 according to the contents of the operation command data.
And the drive device 15 drives and controls the switch SS. Thereafter, various detection devices in the slave station detect the state of the power distribution line 4 in the power distribution section, and the detected data is written in its own data frame D and transmitted to the master station 2.

In this way, when an accident occurs in the power distribution network 3, the master station 2 reads out the operation command data calculated based on the detection data and status data of each slave station from the RAM 9 of the one that is not being exchanged, and sends the operation command data to each slave station. By sending the information to the accident section, it is possible to quickly isolate only the accident section.

In addition, by providing two RAMs 8゜9 that alternately store the latest operation command data calculated by the CPU 11 of the parent 82, it is possible to prevent a ground fault from occurring while the CPU 11 is calculating the operation command data. However, by reading out the operation command data in the RAM 9 that is not being rewritten, you can quickly respond to an accident.

Further, when the CPU 11 determines that an accident has occurred, it transmits operation command data to the slave station corresponding to the accident, and also transmits operation command data corresponding to the accident expected thereafter based on the operation command data. By calculating and writing to the other RAM 8 that was being rewritten, no matter what kind of accident occurs, there will always be appropriate operation command data corresponding to the situation, making it possible to respond flexibly to the occurrence of an accident. .

[Effects of the Invention] As described in detail above, in the present invention, operation command data is calculated based on the detection data and status data of each slave station, and by storing this data, it can be used immediately in the event of an accident. I can handle it.

In addition, by alternately storing operation command data in the two storage means, even if an accident occurs on the distribution line during calculation by the calculation means, the faulty section can be immediately disconnected, and power can be quickly transmitted to a healthy section to prevent the accident. can be accommodated.

Furthermore, by providing the master station with a second calculation means for calculating operation command data corresponding to an accident expected thereafter based on the operation command data transmitted by the transmission means to each slave station when an accident occurs, Able to respond flexibly.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of an embodiment embodying this invention, Fig. 2
The figure is an electric circuit diagram showing the configuration of the master station, Figure 3 is an electric circuit diagram showing the configuration of the slave station, Figure 4 is a configuration diagram showing the data frame configuration, and Figure 5 is the RAM installed in the master station. FIG. 2 is a configuration diagram showing the internal configuration of. 3... Distribution Ill network, 4... Distribution line, 7... Communication device as receiving means and transmitting means, 8.9... RAM as storage means, 11... Calculating means, determining means 12: a communication device as a receiving means and a transmitting means; 14: a detecting device as a detecting means;
15... Drive device as drive control means, SS...
Switches as distribution N equipment, K...slave stations. Patent applicant Nippon Insulator Co., Ltd. Agent Patent attorney On 1) Hironobu Diagram To--5 Diagram

Claims (1)

[Claims] 1. Drive control means (15) for driving and controlling power distribution equipment (SS) provided in each section of the power distribution line (4) of the power distribution network (3) based on operation command data; , a detection means (14) for detecting an accident in the distribution line (4), and an overconfidence device for transmitting status data related to the slave station (K) and detection data of the detection means (14) and receiving operation command data. a slave station (K) comprising a means (12); a receiving means (7) for receiving detection data and status data of each slave station (K); Calculating means (1) for calculating operation command data for optimal drive control of the equipment (SS) for each section
1), storage means (8, 9) for storing the calculated operation command data, and judgment means (11) for determining the accident area based on the latest detection data regarding the slave station (K) that has been transmitted. and the determining means (11) reads operation command data corresponding to the accident zone from the storage means (8, 9),
A power distribution line monitoring system comprising a master station (2) and a transmitting means (7) for transmitting data to each slave station (K). 2. A drive control means (15) for driving and controlling the distribution equipment (SS) provided in each section of the distribution line (4) of the distribution network (3) based on operation command data; and the distribution line (4). a detection means (14) for detecting an accident, and a communication means (12) for transmitting status data related to the slave station (K) and detection data of the detection means (14) and receiving operation command data. A receiving means (7) for receiving detection data and status data transmitted from each slave station (K) at predetermined time intervals, and a receiving means (7) for receiving detection data and status data transmitted from each slave station (K) at predetermined time intervals, and a receiving means (7) for each power distribution device (SS) in the event of an accident. Calculation means (11) that calculates operation command data for optimal drive control for each section
), two storage means (8, 9) that alternately store each operation command data calculated based on various data transmitted by the calculation means (11) at predetermined time intervals, and a transmission means (8, 9). determining means (11) for determining the accident zone based on the latest detection data regarding the slave station (K) that has been detected; and when the determination means (11) determines the accident zone based on the latest detection data; A master station (2) comprising a transmitting means (7) for reading operation command data corresponding to the accident section from one of the two storing means (9) that is not being rewritten and transmitting it to each slave station (K). ) A distribution line monitoring system characterized by comprising: 3. Drive control means (15) for controlling the power distribution equipment (SS) provided in each section of the distribution line (4) of the distribution network (3) based on operation command data; and the distribution line (4). a detection means (14) for detecting an accident, and a communication means (12) for transmitting status data related to the slave station (K) and detection data of the detection means (14) and receiving operation command data. A receiving means (7) for receiving detection data and status data transmitted from each slave station (K) at predetermined time intervals, and a receiving means (7) for receiving detection data and status data transmitted from each slave station (K) at predetermined time intervals, and a receiving means (7) for each power distribution device (SS) in the event of an accident. Calculating means (1
1), and two storage means (8, 9) in which each operation command data calculated based on various data transmitted at predetermined time intervals by the calculation means (11) is stored alternately.
and a determination means (11) for determining an accident zone based on the latest detection data regarding the transmitted slave station (K);
When the determining means (11) determines the accident zone based on the latest detection data, reading operation command data corresponding to the accident zone from one of the two memory means (9) that is not being rewritten; When the transmitting means (7) transmits data to each slave station (K) and the determining means (11) determines that an accident has occurred, the transmitting means (7) transmits data to each slave station (K).
) calculates operation command data corresponding to a section accident expected thereafter based on the operation command data transmitted to the second storage means (8), which is stored in the other storage means (8) which was being rewritten.
A power distribution line monitoring system comprising: a master station (2) having calculation means (11);