JPH03270654A - Equipment for supporting fault analysis of electric power system - Google Patents

Abstract

PURPOSE:To reduce time required for fault analysis and delete an incorrect judgement incurred during fault analysis by displaying the content and time of operations of electric power system equipment memorized in a memory means, in a specified display duration. CONSTITUTION:A display process means 29 displays information kept in a fault analysis memory area 2A, on a displaying equipment 11 by using display format data of a received data display format memory area 24 when it receives a notice of order for display from a fault analysis process means 2B. As the result, a display duration can be extended based on the operation timing of an equipment operated due to a fault. This enables deletion of a work for judging an operating order of equipment in mind while reading messages of several lines in a displayed list.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a system in which an operator centrally monitors and controls power system equipment via a man-machine interface device and a remote monitoring and control device. The present invention relates to a power system accident analysis support device that analyzes and supports the details of the accident when an accident occurs in power system equipment that is subject to monitoring and control.

(Prior Art) A large number of equipment such as circuit breakers, disconnectors, and protection devices are installed in power systems for the purpose of operational stability. In addition, for the purpose of simplifying equipment operations and achieving more advanced automation, we are constructing a centralized monitoring and control system using a combination of electronic computers and remote monitoring and control equipment.

Furthermore, with the development of centralized monitoring and control technology, the range of monitoring and control has expanded, and the amount of information handled by computers in centralized monitoring and control systems has become enormous.

In this way, when operators handle a huge amount of information on a daily basis, when monitoring and controlling the power system, a centralized monitoring and control system can monitor and control the power system in response to the operator's requests and automatically. Information is communicated to operators on a regular basis.

The conventional method will be specifically explained below using FIGS. 7 to 17. Note that in the following description, an example will be described in which the operation details of power system equipment are stored in a remote monitoring and control device.

FIG. 7 shows an example of the configuration of a general power system, in which two transformers 63 and 64 are connected to the bus bar 62, power transmission lines 65 and 66 are connected to the transformer 63, and the transformer vessel 64
Power transmission lines 67 and 68 are connected to.

FIG. 8 shows a specific configuration of the power transmission lines 65 and 66 in FIG. 7. A parallel two-circuit power transmission line is constituted by setting the power transmission line 65 as line 1 and the power line 66 as line 2. Power transmission $16
A circuit breaker 100° 110 is provided at both ends of the power transmission line 6.
Circuit breakers 120 and 130 are provided at both ends of 6. Each circuit breaker has a detector 101, 11 such as a current detector, respectively.
Protection relay 102°112 via 1°121.131
．． 122.132 and reclosing device 103°113.1
23,133 are provided.

FIG. 9 shows a centralized monitoring and control system for monitoring and controlling the status of the power system shown in FIGS. An electronic computer 2 having a machine interface device 1 and a remote monitoring and controlling device 3 are provided, and a remote monitoring and controlling device 4 is provided on the slave station side having the power system equipment 5. The man-machine interface device 1 includes a display device 11 and a pointing device 12. The pointing device 12 is an input means used to request display of accident details, and may be, for example, a light pen or a tablet.

The computer 2 performs monitoring and control processing of the power system equipment 5 based on the monitoring information transmitted via the remote monitoring and control device F3.4. Here, the power system equipment 5 indicates the object to be protected, monitored, and controlled, and corresponds to the entire parallel two-circuit power transmission lines 65 and 66 shown in FIG. 8.

FIG. 10 shows a schematic configuration for storing the operation contents of the power system equipment 5 shown in FIG. The device 41 is shown as one opposing portion forming a pair. When the power system device 5 performs some operation, the time of the operation, device NIIL (number for identifying the device), direction of operation, etc. are stored in the device operation content storage area 410 via the remote monitoring and control device 41. The data is stored as shown in FIG.

FIG. 11 shows an example of the internal configuration of the device operation content storage area 410 shown in the diagram, in which the device 1 area 4112, the device 2 area 412, . . . 1 are arranged in the order of device operation.
It has an area 41p for device p, and each area stores the operation time, device information, and operation direction.

FIG. 12 shows the operator's response to the computer 2 in FIG.
This figure shows the correlation between software means and hardware that perform processing for displaying details of accidents that have occurred in the power system. The electronic computer 2 includes an input processing means 21 that notifies the operator of the request for displaying accident details using the man-machine interface W1, and remotely monitors the contents notified by the input processing means 21. Transmission processing means 2 for outputting command codes to the control device 3.4
2. A reception processing means 23 that receives the operation details of the power system equipment 5 sent from the remote monitoring and control devices 4 and 3; a reception data storage area 25 that stores the reception data received by the reception processing means 23; Received data storage area 2
The received data display format storage area 24 stores the display format for displaying the stored contents of 5 on the man-machine interface device 1, and the stored contents of the received data storage area 25 are stored as the data of the received data display format storage area 24. The display processing means is provided with two display processing means for performing processing for causing the man-machine interface device 1 to perform display using.

FIG. 13 shows an example of the internal configuration of the received data storage area 25 in FIG. It has a second area 252 that stores device operation information such as direction.

FIG. 14 shows an example of the internal configuration of the received data display format storage area 24 of FIG. 12, in which the first area 2 stores information for displaying the current status of each device.
41, and a second area 242 for storing information for displaying the operating order of devices.

FIG. 15 shows an example of an accident in which an accident occurs on line 1 (transmission line 65) of the power system shown in FIG. After the circuit is reclosed by the reclosing device 103, the circuit is tripped again by the operation of the protective relay 102.
At the same time, the timing chart shows an accident in which the CB 110 trips due to the operation of the protection relay 112, is reclosed by the circuit reopening device 113, and then trips again due to the protection relay 112. In this figure, the circled numbers indicate the order in which each operation occurs.

FIG. 16 shows the details of the accident shown in the timing chart of FIG. 15 on the display device 1 of the man-machine interface device 1.
1 shows an example of display when displaying the accident details in the form of a message, and has a message display area 13 for displaying the details of the accident in the form of a message, and a system status display area 14 for displaying the system status in the form of a circuit diagram. . The display content of the display device 11 before the accident shown in the timing chart of FIG. 15 occurs is shown as screen A1, and the display content of the display device 11 after the accident occurs is shown as screen A2. here,
In the system status display area 14, an "open" state is shown as an outline state, a "closed" state is shown as a filled state, and a flicker state is shown as a shiny mark. In screen A1, all the circuit breakers 100, 110, 120, and 130 are in the "closed" state, indicating a normal state without any accidents, and therefore there is no message in the message display area 13. On the other hand, in screen A2, an accident has occurred on line 1 (transmission line 65), and
An example is shown in which messages indicating the details of the accident are displayed in the order in which the events occurred in the message display area 13 while being displayed by flickering.

Next, FIG. 17 shows the specific display contents of the message display area 13 after an accident occurs regarding the accident contents shown in the timing chart of FIG. 15. Here, the time when the accident occurred, the operating equipment parts and the operating directions of the equipment are listed with circled numbers in the order of occurrence. This circled number corresponds to the circled number in FIG.

In the system described above with reference to Figures 7 to 17, for example, an accident occurs in the power transmission line 65 of the power system shown in Figure 8, and each device operates as shown in the timing chart of Figure 15. Then, the remote monitoring and control device 41 on the slave side in FIG. The directions of the motions are stored in the device motion content storage area 410 in the order in which the motions occur, according to the storage format shown in FIG. At this time, when the operator uses the man-machine interface device 1 to request the display of an accident related to the power transmission line 65, the human processing means 21 first operates to determine the content of the request, and then performs transmission processing according to the content of the determination. A command is issued to the means 22 to collect the contents of the device operation contents storage area 410. When the transmission processing means 22 receives this command, it outputs a command code to the remote monitoring and control device 41 (FIG. 10) that stores the details of the accident on the power transmission line 65. When the remote monitoring and control device 41 receives this command code, it transmits the contents of the device operation content storage area 410 to the computer 2 via the remote monitoring and control device 31 . In the electronic computer 2, the receiving processing means 23 receives it and stores it in the received data storage area 25 according to the format shown in FIG. When all received data is stored in the received data storage area 25, the reception processing means 23 notifies the display processing means 29. The display processing means 29 operates based on this notification, stores the contents of the received data storage area 25 in the received data display format storage area 24, and displays the screen A after the accident as shown in FIG. 16 according to the display format.
2 on the display device 11 of the man-machine interface device l. This display allows the operator to
It is possible to recognize how each device in the power system operates due to the above-mentioned accident that occurred on the power transmission line 65, and what kind of system state it is currently in.

(Problem to be Solved by the Invention) In the case of the conventional device described above, the display contents displayed on the display device 11 include the status of the power system after the occurrence of an accident and the remote monitoring of the child side, as shown in FIG. The control device 41 simply converts the stored operation details of the device into a message format and displays it, and in reality, displaying several dozen lines can be completed in a few seconds.

Therefore, when an operator tries to understand the operating order of each device related to the accident in order to analyze the details of the accident,
You need to visually follow the many pieces of messages in the displayed list while mentally determining the order in which the devices should operate. This judgment task places an extremely heavy burden on the operator.

Furthermore, when multiple accidents occur simultaneously, the amount of information becomes extremely large, the burden placed on operators increases, and accident analysis requires a considerable amount of time. Therefore, there is a risk that the operator may make incorrect decisions regarding accident analysis. Such errors in judgment not only lead to more accidents, but also lead to delays in accident recovery.

The present invention is very useful for operators, who have to visually follow multiple pieces of messages in a displayed list based on the contents displayed on the display device and mentally judge the order in which the equipment should operate. It is an object of the present invention to provide an electric power system accident analysis support device that is effective in eliminating burdensome work, shortening the time required for accident analysis, and eliminating erroneous judgments regarding accident analysis.

[Structure of the invention]

(Means for Solving the Problem) In order to solve the above object, the present invention provides a man-machine interface device having an input means and a display device, and a remote monitoring and control device for controlling each part of the power system according to data transmitted through the device. Storage means for storing the operating direction and operating time of the power system equipment for each power system equipment; and means for changing the display time interval of the operation based on the operating direction and operating time of the power system equipment stored in the storage means. , a specifying means for specifying a display time interval via an input means of the man-machine interface device; and a display device for displaying operation details and operation times of power system equipment stored in the storage means at display time intervals specified by the specifying means. The present invention proposes an electric power system accident analysis support device equipped with means for displaying information on a power system.

(Function) According to the power system accident analysis support device described above, an operator uses a man-machine interface device to change the display time interval of the operation based on the operation content of the power system equipment due to the accident and display it on the display device. can be done. Therefore, in order to analyze the contents of an accident in detail, operators must visually follow the operating order of each system device related to the accident from among the many pieces of messages displayed in the displayed list, and mentally trace the order of operation of each system device related to the accident. There is no need to judge the order of operations, and the burden on the operator is greatly reduced. Further, the time required for accident analysis can be shortened, and incorrect judgment regarding accident analysis can be eliminated.

(Configuration of Example) The present invention will be explained in more detail with reference to FIG. 1 and the following figures.

In this embodiment, for convenience of explanation, a case will be described in which the operation details of power system equipment are stored in a remote monitoring and control device.

FIG. 1 shows an embodiment of a power system accident analysis support device according to the present invention. The man-machine interface device 1, display device 11, pointing device 12, and remote monitoring control device 3.4 in FIG. 1 are the same as those shown in FIG. 12 already described with the same reference numerals. Further, input processing means 21 provided in the electronic computer 2,
Transmission processing means 22, reception processing means 23, received data display format storage area 24, received data storage area 25,
The display processing means 29 is also substantially the same as those shown in FIG. 12 with the same reference numerals. The electronic computer 2 in FIG.
In addition to the above, there is an accident content storage area 26, a reproduction speed storage area 27, a display changeover switch 28, and an accident analysis data storage area 2A.

and an accident analysis processing means 2B. In the event of an accident, it is possible to instruct the computer 2 via the pointing device 12 to assist in analyzing the details of the accident. In the case of this embodiment, when requesting accident content analysis, the reproduction speed is adjusted to adjust the reproduction speed magnification, that is, when displaying the operation details of power system equipment, the reproduction speed is adjusted to change the time interval of operation display. Various playback speeds are stored in a speed storage area 27. Reception processing means 23
The received data received by is stored in the received data storage area 2.
5, it is also stored in the accident details storage area 26, and further notified to the accident analysis processing means 2B. This accident analysis processing means 2B performs an accident analysis through a process (described in detail later) according to the flowcharts shown in FIGS. 6(a) and 6(b), and stores the analysis results in the accident analysis data storage area 2A. The display changeover switch 28 is used to specify to the display processing means 29 which of the storage contents of the received data storage area 25 and the storage contents of the accident analysis data storage area 2A should be displayed on the display device 11. . Based on the notification from the accident analysis processing means 2B, the display processing means 29 converts the information stored in the received data storage area 25 or the accident analysis data storage area 2A into the received data display format storage area 24 according to the switching state of the display changeover switch 28. is displayed on the display device 11 using the display format data.

FIG. 2 shows an example of the configuration of the accident details storage area 26 shown in FIG. The area and operation direction are sequentially stored in the accident 1 area 261, accident 2 area 262, . . . accident 2 lap area 26g.

FIG. 3 shows a configuration example of the accident analysis data storage area 2A shown in FIG. 1, and stores the current state of each device and the operation time, device part, and operation direction in the order of operation of the device.

FIG. 4 shows an example of the configuration of the reproduction speed storage area 27 in FIG. Store it in memory according to the accident department you visited.

Figures 5(a) and 5(b) show the case where the details of the accident are analyzed and displayed sequentially on the display device 11 by changing the display time interval of the operation based on the operation timing of the equipment that operated due to the accident. This is an example of a display on the display device 11 when an accident occurs in the power transmission line 65 in the power system illustrated in FIG. 8 and each device operates as shown in the timing chart of FIG. This is a display example. Screen H
1 shows the healthy state before the accident occurred; below, screen H2 shows the state when the protection relay 102 operates, screen H3 shows the state when the protection relay 112 operates, and screen H4 shows the state when the protection relay 112 operates.
Screen H5 shows the state when 100 trips, CBII
Screen H6 shows the state when O trips, screen H7 shows the state when CB100 is closed by re-closing, and screen H7 shows the state when CBII
Screen H8 shows the state when O is turned on by re-closing, and screen H8 shows the state after all the equipment has operated due to an accident.

(Operation of the embodiment) Next, the operation of the power system accident analysis support device according to the present invention having the above-described configuration will be explained.

An accident occurs in the power transmission line 65 in the power system configured as shown in Fig. 8, and as shown in the timing chart of Fig. 15,
After B100 is tripped by the operation of the protection relay 102 and reclosed by the re-closing device 103, it is tripped again by the operation of the protection relay 102, and at the same time, the CB
Consider a case where the IIO is tripped by the operation of the protection relay 112, reclosed by the recircuit device 113, and then tripped again by the protection relay 112. In this case, the remote monitoring and control device 41 (FIG. 10) monitors the device information, operating direction, and operating time in milliseconds of the CB 100, protective relay 102, reclosing device 103, CB 110, protective relay 112, and reclosing device 113. The device operation content storage area 41 is stored in the order in which the operations occur according to the storage format shown in Figure 11.
Save to 0. At this time, when the operator uses the display device 11 and pointing device 12 in the man-machine interface device 1 shown in FIG. 1 to request analysis of the accident details regarding the power transmission line 65, the input processing means 21 operates. , after determining the content of the operator's request, the transmission processing means 22
A command to collect the contents of the device operation content storage area 410 is notified to the device operation information storage area 410, and the requested magnification and accident part of the reproduction speed information are stored in the reproduction speed storage area 27 in the format shown in FIG. When the transmission processing means 22 receives this command, it outputs a command code for data collection via the remote monitoring and controlling device 31 to the remote monitoring and controlling device 41 (FIG. 10) that stores information on the power transmission line 65. When the remote monitoring and control device 41 receives this collection command code, it transmits the contents of the device operation content storage area 410 to the computer 2 via the remote monitoring and control device 31. In the computer 2, the reception processing means 23 operates to receive the contents of the device operation contents storage area 410 transmitted by the remote monitoring and control device 41, and store it in the received data storage area 25 in the format shown in FIG. , and is saved in the format shown in FIG. 2 in the accident content storage area 26 at a location corresponding to the requested accident part. When all the information has been saved, the accident analysis processing means 2B is notified of this fact. Upon receiving this notification, the accident analysis processing means 2B uses the information stored in the reproduction speed storage area 27 and the accident content storage area 26 to process the operation details of the equipment related to the accident as follows.

As shown in FIGS. 6(a) and 6(b), first, step S1) extracts the reproduction speed magnification from the reproduction speed storage area 27, and then the step S1) in which the reproduction speed magnification extracted in step S1 is specified. It is determined whether or not (step S2). Here, if a magnification is specified, the process proceeds to step S3, and if a magnification is not specified, the process proceeds to step 51B. Step S3 is a step of switching the display changeover switch 28 to the side that displays the contents of the accident analysis data storage area 2A.

Thereafter, the accident part of the specified reproduction request is retrieved from the reproduction speed storage area 27, and the pre-accident equipment state information corresponding to the accident part is retrieved from the accident content storage area 26, and stored in the accident analysis data storage area 2A. (Step S4). Next, the display processing means 29 is notified of a display request to the display device 11 (step S5), and the accident details storage area 26 is
The index I for displaying the operation information of the device is initialized (1-0) (step S6).

Next, from the accident details storage area 26, the 1st and 1+1st pieces of equipment operation information are retrieved from the equipment operation information corresponding to the relevant accident section retrieved in step S4, and the first information is stored in the accident analysis data storage area 2A. and save it to
The difference between the operation time in the first device operation information and the operation time in the I+1th device operation information is calculated as a time difference, and the delay time is determined by multiplying it by the magnification extracted in step S1 ( Step S7). Next, a delay process is performed to extend the display time interval by the delay time obtained in step S7 (step 88). After that, the two display processing means are notified of a display request to the display device 11 (step S9),
The device operation information retrieval index ■ initialized in step S6 is incremented (1-1+1) (step 510).

Here, it is determined whether all of the equipment operation information corresponding to the accident part in the accident details storage area 26 has been processed (step 511). If all processing is completed, step S1
If not, the process returns to step S7. In step S12, processing is performed to switch the display changeover switch 28 to the side that displays the contents of the received data storage area 25.

Thereafter, a display request to the display device 11 is notified to the two display processing means (step 51B), and the series of processing ends.

In the present example, since a request is being made to analyze the details of the accident regarding the power transmission line 65, the display selector switch 28 is switched to the accident analysis data storage area 2A side, the accident analysis is performed as described above, and the accident analysis data storage area 2A is The analysis results of the accident are stored in the display processing means 29, and a display request to the display device 11 is notified to the display processing means 29.

Each time the display processing means 29 is notified of a display request from the accident analysis processing means 2B, the display processing means 29 converts the information stored in the accident analysis data storage area 2A into the received data display format storage area 24.
Display on the display device 11 is performed using the display format data. As a result, as shown in FIGS. 5(a) and 5(b), based on the timing of the operation of the equipment that was activated due to the accident, the display time interval of the operations can be extended and the operations can be displayed sequentially.

By performing the processing described above, when an accident occurs in the power grid, it is possible to easily recognize at what timing the power system equipment operates.

The above-mentioned specific examples are merely examples. Of course, other specific examples can be used.

[Structure of the invention]

As explained above, according to the present invention, when an operator analyzes the details of an accident, he or she can visually check the operating order of each device related to the accident from among the messages that span multiple cycles in the displayed list. There is no need to mentally judge the order in which the devices operate while following the instructions. Furthermore, the scope of monitoring and control of the power system is expanded, and even if multiple accidents occur simultaneously, accident analysis can be easily performed, and post-accident processing can be performed accurately and quickly.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention, FIG. 2 is a diagram showing the internal configuration of the accident details storage area of the computer in FIG. 1, and FIG. 3 is a block diagram of the computer in FIG. 1. Figure 4 is a diagram showing the internal configuration of the computer's playback speed storage area in Figure 1. Figures 5 (a) and (b) are the man-machine interface. Figures 6(a) and 6(b) are diagrams illustrating various display screens on the display device of the device.
7 is a system diagram showing an example of the configuration of a general power system, and FIG. 8 is a specific example of power system equipment that constitutes the power system shown in FIG. 7. 9 is a conceptual diagram showing a configuration example of a conventional centralized monitoring and control system for monitoring and controlling an electric power system. FIG. 10 is a connection diagram showing a configuration example of a conventional centralized monitoring and control system for monitoring and controlling an electric power system. Explanatory diagram showing the correlation between the power system and storage means when saving in the control device, Figure 1]
Figure 12 is a block diagram showing the schematic configuration of a conventional device, and Figure 13 is a diagram showing the data structure when the operation of power system equipment is saved in the child-side remote monitoring and control device shown in Figure 0. 14 is a diagram showing the internal structure of the received data display format storage area in the device shown in FIG. 12, and FIG. 15 shows an example of the occurrence of an accident in the power system shown in FIG. FIG. 16 is a diagram showing a display example of processing results in a conventional device, and FIG. 17 is a diagram showing a display example in a conventional device that displays accident details in the form of a message. 1...Man-machine interface device, 11...
Display device, 12... Pointing device, 2...
- Computer, 21... Input processing means, 22... Transmission processing means, 23... Reception processing means, 24... Received display data format storage area, 25... Received data storage area, 26.・・Accident details storage area, 27...
Playback speed storage area, 28...Display changeover switch,
29...Display processing means, 2A...Accident analysis data storage area-2B...Accident analysis processing means, 3...Observation distant monitoring control device, 4...Slave side far monitoring control device.

Claims (1)

[Claims] a man-machine interface device having an input means and a display device; and a storage means for storing the operating direction and operating time of each power system device in the power system for each power system device according to data transmitted via the remote monitoring and control device. ,
means for changing the display time interval of the operation based on the operation direction and operation time of the power system equipment stored in the storage means; and a specification for specifying the display time interval via the input means of the man-machine interface device. A power system accident analysis support device, comprising: means for displaying operation details and operation times of the power system equipment stored in the storage means on the display device at display time intervals designated by the designation means.