JPS6115540A - Cooperation device malfunction state detector of power system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus for detecting an abnormal state of interlocking equipment in a power system, in particular, detecting equipment operation information and equipment operation response information transmitted from an equipment operation base from a man-machine interface device via a remote monitoring and control device. The present invention relates to an abnormal state detection device for interlocking equipment in a power system that analyzes and detects abnormal states of interlocking equipment.

[Technical background of the invention]

In the operation of power systems, a large number of equipment such as circuit breakers, disconnectors, and protection devices are installed to stabilize the power system. In addition, in order to save labor and automate these operations to a higher degree, a centralized monitoring and control system is realized using an electronic computer and a remote monitoring and control device. In particular, with the development of centralized monitoring and control technology, the scope of monitoring and control has become wider, and the amount of information handled by computers in centralized monitoring and control systems has become enormous. Therefore, computer software is used to quickly detect abnormalities in interlocking equipment that are difficult to detect and have a large impact on the operation of the power system in the event that an abnormality occurs, as operators handle a huge amount of information on a daily basis. A method is in place to detect this and notify the operator.

The conventional device will be explained below with reference to FIGS. 2 to 8.

Figure 2 shows the power system, where 1oo is the power source and 41o.

420 is a transformer that steps up or steps down the voltage of the power supply 100, and 210.220.230 is a transformer 41o.

Busbar 24o installed in the same substation as 420.

250, 260, and 270 are load ends installed far from the substation, and 310, 320, 330, and 340 are power transmission lines.

FIG. 3 is a diagram showing an example of interlocking equipment, for example, a specific example of a power transmission line 310. As shown in Figure 3, 500,5
01,502,503 is a breaker, 600.60
1.602.603 is a disconnector, 700.701.702
．． 703 indicates that the above-described circuit breaker and disconnector are interlocked.

Figure 4 shows a computer system for monitoring and controlling the status of the power system. 1 is a man-machine interface device for operators to monitor and control the power system, and 2 is via remote monitoring and control devices 4 and 5. 3 is a data relay device that transfers information between the computer and the remote monitoring and control device; 4 and 5 are monitoring of the power system equipment; , a remote monitoring and control device that transmits information for controlling, and 6 indicates power system equipment used to protect, monitor, and control the power system.

FIG. 5 is a correlation diagram between software and hardware for data processing performed when the electronic computer 2 receives power system equipment status data. In FIG. 5, reference numeral 21 indicates a state change data storage area in which data detected as a state change among the state data received by the data relay device 3 is written; A state change processing program that creates a state and stores it in the current device status area 23; 24 is a display line when displaying on the display device 11 for each device corresponding to the current device status area 23; A device display designation data storage area 25 defines the current device status area 23, and a device display designation data storage area 25 that defines the display color, etc.
4, a power system display program to be displayed on the display device 11; 26 is a man-machine interface device 1;
An equipment operation zologram is shown that outputs data for operating power system equipment to the data relay device 3 according to the requested contents.

FIG. 6 is a data configuration diagram of the device display designation data storage area 24. Corresponding to each device listed on the left, the display symbols and display colors shown on the right are changed according to the device status. , is predetermined.

FIG. 7 is a diagram showing a specific example of displaying the power system on the display device 11, in which each device in the overall system diagram is arranged in order, making it obvious at a glance.

FIG. 8 is a flowchart showing internal data processing of the electronic computer.

[Problems with background technology]

In the conventional device having the above configuration, for example, the man-machine interface device 1, the interlocking device 500, 600, etc.
When only the breaker 500 responds when the breaker 500 is operated, a message indicating that the breaker 600 is inoperable is displayed on the display device 11 as shown in FIG. If this state continues for a certain period of time, the interlocking device becomes abnormal, but currently, an operator visually monitors the content displayed on the display device 11 to determine whether the interlocking device is abnormal. Therefore, there is a risk that an abnormality in the interlocking device may be overlooked. Furthermore, in the future, as the scope of monitoring and control continues to expand and automatic control increases, it is thought that the danger will increase even more.

[Purpose of the invention]

The present invention was made for the purpose of solving the above-mentioned problems, and provides a device for detecting an abnormal state of interlocking equipment in a power system that can automatically notify an operator when an abnormality occurs in an interlocking equipment. is intended to provide.

[Summary of the invention]

゛In the present invention, when a device is operated via a man-machine interface, it is determined whether the operated device is an interlocking device or not, and if it is an interlocking device, the abnormal state is determined using interlocking device abnormal state data. Then, when an abnormal condition occurs, a timer value corresponding to the relevant device is set and decremented at a fixed period to detect when the timer is up, and after confirming the abnormality in the interlocking device, the corresponding interlocking device in which the abnormality has occurred is flickered. This is intended to be displayed on a man-machine interface device in different colors.

[Embodiments of the invention]

Examples will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of an apparatus for detecting an abnormal state of an interlocking device in an electric power system according to the present invention, and is a diagram showing the relationship between a program and data for detecting an abnormality of an interlocking device. In FIG. 1, the same reference numerals as in FIG. 5 have the same functions and correspond to each other. In FIG. 1, reference numeral 27 indicates interlocking equipment definition data that defines interlocking circuit breakers and disconnectors, and reference numeral 28 indicates interlocking equipment definition data that defines the interlocking equipment breaker and disconnector. an interlocking device operation storage area for storing operations; 29 is a program for monitoring and detecting whether abnormalities occur in the interlocking device when the interlocking device is operated;
2A is device abnormal state definition data for detecting an abnormality in the interlocking device after operating the interlocking device, 2B is timer value data that defines how long the abnormal state continues to become abnormal, and 2C is interlocking device abnormality detection. Detection result storage area for storing interlocking equipment abnormalities detected due to time-up of timer 20, 2E is a flicker designation and color of the equipment symbol to be displayed on the display device to inform the operator of the interlocking equipment that has become abnormal. This is data that defines the specification. The other configurations are the same as in FIG. 5.

FIG. 9 is a configuration diagram of the interlocking device definition data 27. On the left side, the interlocking device units are shown with sequential numbers assigned to each interlocking device, and on the right side, the circuit breaker numbers and disconnector numbers constituting the interlocking device are shown corresponding to each of these interlocking device units.

FIG. 10 is a configuration diagram of two linked equipment abnormal state definition data. On the left side, the interlocking equipment units are shown with sequential numbers assigned to each interlocking equipment as above, and corresponding to each interlocking equipment unit, the circuit breaker and disconnector when an abnormality is detected in the interlocking equipment after operation of the interlocking equipment is shown. The status is shown on the right.

FIG. 11 is a configuration diagram of the interlocking device abnormality detection timer value data 2B. In this case, similarly to the above, the units of linked devices are shown with sequential numbers on the left side, and the /ζ abnormality detection timer value is shown for each unit corresponding to each linked device.

FIG. 12 is a configuration diagram of the equipment symbol Noritsuka and color specification data 2E when an abnormality is detected in the linked equipment. Display data is shown.

FIG. 13 shows an example of what is displayed on the display device when an abnormality occurs in the interlocking equipment, and shows a state in which the disconnector 500 and the disconnector 600 are lit.

Next, the operation will be explained. First, the breaker 500 and the breaker 6
Consider a case where the man-machine interface device 1 issues a request for a disconnection operation to the circuit breaker 500 when both the circuit breaker 500 and the circuit breaker 500 are in the ON state. In this case, the device operation program 26 is the man-machine interface device 1
When a disconnection request is received from
7 is used to determine whether the device for which the disconnection operation was requested is an interlocking device. If this is an interlocking device, the information that it is an interlocking device is stored in the interlocking device operation storage area 28, and data for turning off the device is output to the data relay device 3. Upon receiving this, the data relay device 3 sends a signal for a cut-off command to the device via the remote monitoring and control devices 4 and 5.

In response to this disconnection command, the breaker 500, which responds quickly, operates and is in the disconnected state. This state change data is sent back to the data relay device 3 via the remote monitoring and control devices 5 and 4.

Here, the data relay device 3 writes the returned condition change data into the condition change data storage device 21. When the state change data is written, the state change processing program 22 retrieves the state change data from the state change data storage area 21 and changes the state of the circuit breaker 500 currently in the device state area 23 to the OFF state. The interlocking equipment status monitoring program 29 uses the interlocking equipment and the interlocking equipment abnormal state definition data 2A (FIG. 10) stored in the interlocking equipment operation storage area 28 to detect when the operated interlocking equipment has become abnormal. The timer value of the interlocking device is detected from the interlocking device abnormality detection timer value data 2B (FIG. 11), and the timer value is set in the interlocking device abnormality detection timer 20. Incidentally, the display content on the display device at this time is as shown in FIG. 7, indicating that the disconnector 600 is not operating. If there is no response from the disconnector 600 for a predetermined period thereafter, the set interlocking equipment abnormality detection timer 20 times up. When the interlocking device monitoring program 29 detects this time-up, the data of the interlocking device that has become abnormal is stored in the interlocking device abnormality detection result area 29.
Save to D. Then, the power system display program 25 displays the interlocking-like device data stored in the interlocking device abnormality detection result area 2D on the display device 11 using the device symbol flicker and color specification data 2E when an interlocking device abnormality is detected. It is displayed in the color that indicates an abnormality in the interlocking equipment and notifies the operator of this.

Note that if the device to be operated is not an interlocking device, do not save the information of the interlocking device in the interlocking device operation storage area 28.
The above processing is not performed and the operation is normal.

〔Effect of the invention〕

As explained above, according to the present invention, if one of the interlocking devices is inoperative for a certain period of time after the operation of the interlocking devices, it is determined that the interlocking device is defective and an abnormality is displayed. Since the display is automatically displayed even if the interlocking equipment is not consciously monitored every time the interlocking equipment is operated, it is possible to provide an interlocking equipment abnormal state detection device for a power system that does not overlook abnormal states of the interlocking equipment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the power system interlocking equipment abnormal state detection device according to the present invention, and is a diagram showing the relationship between a program and data for detecting interlocking equipment abnormalities, and FIG. FIG. 3 is a diagram showing an example of a power system, FIG. 3 is a diagram showing an example of equipment that interlocks in a power transmission line, FIG. 4 is a diagram showing the correlation between power system equipment and a computer system, and FIG. 5 is a configuration diagram of a conventional device. , a diagram showing the correlation between the program and data when operating the equipment, Figure 6 is a data configuration diagram of conventional processing,
FIG. 7 is a diagram showing a display example of conventional processing, FIG. 8 is a flowchart of conventional processing, FIG. 9 is a configuration diagram of interlocking device definition data, FIG. 10 is a configuration diagram of interlocking device abnormal state definition data,
Fig. 11 is a configuration diagram of interlocking equipment abnormality detection timer value data, Fig. 12 is a configuration diagram of equipment symbol, flicker, and color specification data when an interlocking equipment abnormality is detected, and Fig. 13 is a display example diagram of processing according to the present invention. be. DESCRIPTION OF SYMBOLS 1...Man/man interface device, 2. Computer, 3.. Data relay device, 4.. Remote monitoring and control device (master station), 5.. Remote monitoring and control device (slave station), 6. ...Power system equipment, 11...Display device, 12
...Light cover, 13...Switch, 21.
... Status change data storage area, 22... Status change processing program, 23... Current equipment status area, 24... Equipment display specification data storage area, 25... Power system display program, 26... Device operation flow diagram, 27... Linked device definition data, 28... Device operation storage area, 29...
Equipment monitoring program, 2A...Equipment abnormal state definition data, 2B...Timer value data, 2C...Detection timer, 2D...Detection result area, 2E...Equipment color, flicker, color specification data.

Claims (1)

[Claims] The device operation command from the man-machine interface device is transmitted to the controlled device via the data relay device and the remote monitoring and control device, and the device status signal after the operation is completed is introduced to the central processing unit, which controls the device to be controlled. In a power system interlocking device abnormal state detection device that displays operation status results on a man-machine interface device to monitor abnormal states of operated devices, the central processing unit detects whether the device that issued the operation command is an interlocked device or not. means for determining using device definition data; means for determining that the interlocking device is in an abnormal state using interlocking device abnormal state data if the result of the determination is that the interlocking device is in an abnormal state; means for extracting the timer value of the corresponding interlocking device from the interlocking device abnormality detection timer value data and setting the corresponding timer value in the timer after detecting the abnormality of the interlocking device; means for decrementing the timer and detecting time up; means for specifying the flicker and color of the corresponding equipment symbol using interlocked equipment symbol flicker and color specification data when the timer times up; What is claimed is: 1. A device for detecting an abnormal state of an interlocking device in an electric power system, characterized in that the device is provided with means for displaying on the device.