JPH10210655A - Power system restoration support system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable accurate and quick operation support with an easy system construction. SOLUTION: Information for an operator is indicated by a man-machine interface, and the judgement of the operator is inputted to the man-machine interface. An I/O device 3 collects the monitoring information of power system equipment, etc., and transmits the control information of apparatuses, etc. A data base 4 stores the power system equipment information and the restoration operation patterns with which the indication of the restoration support guidance for the operator, and the input of the judgement of the operator are executed in interactively. When the occurence of a failure in the power system is detected, a processor 1 obtains the states of the power system apparatuses from the I/O device and obtains the power system data from the data base to judge the present power system status and finds out the restoration operation pattern, corresponding to the present power system status from the data base, and the power system restoration operation is executed in accordance with the restoration operation pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system restoration support system for assisting an operator in restoring a system when a power system accident occurs.

[0002]

2. Description of the Related Art An electric power system monitoring and control system has a function of restoring the system after an accident occurs, in addition to protecting the system by a protection relay function when an accident such as a short circuit or ground fault occurs.

There is a system that uses an expert system or the like instead of an accident situation judgment and recovery operation by a skilled operator to derive an optimal system restoration procedure from the current accident situation and system configuration.

For example, Japanese Unexamined Patent Publication No. Hei 7-39075 discloses a system in which an expert system assists the operation of a gas insulated switchgear in a substation by inferring an accident situation and obtaining operation information.

Japanese Patent Laid-Open Publication No. Hei 6-245381 discloses a method of creating a switch operation procedure of a power system by inference processing.

[0006]

A system restoration support system using a conventional expert system requires the creation of an inference unit in order to enable inference according to an accident occurrence situation which is a combination of many system equipment states. Requires a huge amount of cost and time, and the complexity of inference rules may increase the inference processing time and delay system restoration.

Further, the complexity of inference rules makes it difficult to evaluate the validity of the system. Furthermore, the expert system tends to be large in scale, and it is difficult to apply it to a small-scale power system in terms of cost.

An object of the present invention is to provide a power system restoration support system capable of performing accurate and quick operation support while facilitating system construction.

[0009]

According to the present invention, in order to solve the above-mentioned problems, an accident occurrence is used as a trigger to collect accident situation information from the state of system equipment, and a restoration operation having a restoration operation procedure according to the accident situation is performed. An operation pattern is searched, and online data or an operator's judgment operation is taken in accordance with the pattern to proceed with a recovery operation, and is characterized by the following system.

In a power system restoration support system for assisting a system restoration operation according to a power system accident occurrence state, a man-machine interface for displaying information to a system restoration operator and inputting judgment of the operator, and a power system facility I / O device that collects monitoring information and status information online, and transmits device control and operation information online, saves power system information, displays recovery support guidance for operators, and interacts with operator input. A database that stores recovery operation patterns for execution in a format
A processing device, the processing device detects the occurrence of a power system accident based on monitoring information or the like from the input / output device of the power system equipment, and sets the state of the power system equipment after the protection operation of the power system to the input. Obtaining as online information from the output device and obtaining the power system data from the database to determine the current power system state, searching the database for the recovery operation pattern corresponding to the power system state, and performing the recovery operation It is characterized in that the restoration operation of the power system is advanced according to the pattern.

[0011]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention. The processing apparatus 1 serving as a computer main body performs information display and question-and-answer with the operator M through a man-machine interface 2 including a CRT, a keyboard, a mouse, and the like.

The processing device 1 collects monitoring information and status information of power system equipment online and transmits device control and operation information online via an input / output device 3 serving as a remote monitoring control device or the like.

Further, the processing device 1 acquires various information necessary for monitoring and control, such as power system information stored in the database 4.

With the system configuration having these functions, a system restoration support function is realized in addition to the monitoring control of the power system equipment and the protection relay function.

The system restoration support function in the present embodiment is as follows.
When the occurrence of a power system accident is detected by monitoring and protection calculation of the power system equipment by the processing device 1, the state of the power system equipment after the protection operation such as a circuit breaker trip for the power system protection is obtained as online information, and a database is obtained. 4 to obtain the power system data, determine the current power system state, search the database 4 for a recovery operation pattern having a recovery operation procedure corresponding to the power system state, and restore the power system according to the recovery operation pattern. Proceed with the operation.

In this recovery operation pattern, the display of the recovery support information to the operator and the judgment input of the operator are executed interactively, and the recovery operation procedure is executed together with the online information from the power system equipment.

FIG. 2 shows a basic processing flow of the system restoration support function in the present embodiment. This processing will be described in detail below.

(S1) Trigger position (failure position) detection function (S1-A) Failure information input: Failure information is input from data on the remote monitoring control device.

(S1-B) Trigger position input and collection timing: The trigger position for starting the process is a set fault position and a change in the state of the equipment (for example, self-start or cut-off of the DC high-speed circuit breaker). Etc.).
This is called a processing target position.

(S2) Collection of target positions: When one trigger position is detected and processing is started, processing positions are further collected for a certain period of time (for example, 10 seconds). (S3, S4) Lock and release of position detection: In collecting the target position in a certain period of time, it is assumed that no accident unrelated to the trigger position will occur, and the contents of the target position to be collected are not checked. If the target position is detected after this fixed time, this is used as a trigger to start another process. At this time, if the previous guidance has not been completed, parallel processing is performed. The maximum number of parallel processes is, for example, six.

In the case shown in the following table, pattern 1 and pattern 2 are extracted, and pattern 3 is not extracted.

[0022]

[Table 1]

(S5) Accident pattern extraction function (S5-A) Pattern extraction: Matching the positions collected in steps S1 to S4 with a previously prepared pattern. However, if the collected positions overlap, processing is performed as one. If the related operation location switching is “direct”, it is ignored.

(S5-B) Conditions for pattern extraction: The patterns are provided with the following conditions for processing target positions.

(A) AND condition: 3 positions at maximum (1
(B) OR condition (10) OR condition of (a) maximum 10 positions (S5-C) Failure of pattern extraction ... If pattern extraction fails and extraction fails, subsequent processing is not performed.
When two or more patterns are extracted, parallel processing is performed. Basically, extraction conditions are set so that one pattern is extracted.

(S6) Driving support screen automatic display function: When the pattern extraction is completed, the following contents corresponding to the pattern are automatically displayed. When two or more processes are performed in parallel, the screen (data) can be switched.

(S6-A) Display contents (a) Date and time of occurrence: display of trigger position detection time (b) Failure name: Display of failure name of extracted pattern (c) Failure section or location: Failure section of extracted pattern or Displaying the location (d) Operation relay: Displays the name of the collected target position, but displays only the target position that becomes the pattern extraction condition.

(E) Non-operating device: Displayed when the operating device corresponding to the operation relay does not operate.

(F) Accident situation memo: The registered contents of the accident situation memo are displayed.

(S6-B) Data correction: The above (b) and (c) can be corrected.

(S7) Driving support guidance display function: The guidance display process is started simultaneously with the display of the driving support screen when the pattern extraction is completed.

(S7-A) Guidance display: Guidance registered in advance is sequentially CR-read according to the accident pattern.
Display one line at a time on the T screen.

The new guidance is displayed below the previous guidance, and if it does not fit on one page, automatic scrolling is performed. Also, it is assumed that page switching can be performed manually.

(S7-B) Timing of Guidance Display: New guidance is displayed at the following times.

(A) Time-up: when the time exceeds the set value of the timer.

(B) Device response: When there is a response as a result of performing the device operation indicated in the guidance.

(C) Commander's instruction: When "confirmation" or "judgment" indicated in the guidance is instructed.

(D) Continuous guidance: When the guidance is displayed continuously with the previous guidance.

(E) Matching conditions: when the state in which the guidance should be performed is satisfied at the time of display.

(S7-C) Guidance Type The following types of guidance are provided.

(A) Guidance for waiting for confirmation by the dispatcher: Waiting for the confirmation instruction of the dispatcher after displaying the guidance.

(B) Guidance waiting for the dispatcher's judgment: Waiting for the dispatcher's decision (choice of two) after the guidance is displayed.

(C) Guidance to wait for commander device operation: A device that displays guidance and waits for commander device operation.

(D) Timer processing guidance: Waiting for the set time to elapse after the guidance is displayed.

(E) Display Guidance: A display that only displays guidance. Display new guidance immediately.

(F) Condition judgment guidance: A condition judgment is automatically made and the judgment result is displayed.

(S8) Guidance end: Guidance display of "end" is performed, and the process is completed.

(S9) Accident situation memo function Adds / changes the accident situation memo displayed on the CRT. Also, this function can be performed independently of the accident duplicate process.

In addition to the above basic processing, there is an abnormality processing manual display function. This displays a manual corresponding to an abnormal condition on the CRT. The manual display method will be an inquiry form. Incorporate this function for handling abnormalities in the remote monitoring control device. It is also possible to enter comments.

The internal process for displaying the guidance in the process S7 of the basic process flow is performed based on a table in which the flow chart is converted into data for each accident pattern. FIG. 3 exemplifies a flowchart of a driving support process when a ground fault occurs in the system, and the processing contents of reference numerals in each block are as follows.

Guidance display: guidance is displayed on the CRT.

Determination of remote monitoring control device data: It is determined whether the data on the remote monitoring control device matches the conditions.

If the device is determined to be unresponsive in the process of displaying unresponsive devices, the device name is displayed on the CRT.

Waiting for commander confirmation operation ... Wait for a confirmation instruction from the commander. If there is no instruction for t1 seconds (variable), the process is temporarily suspended, and the determination of whether to cancel or re-execute is waited.

Waiting for commander device operation ... Wait for the commander to operate the remote monitoring control device. If there is no instruction for t2 seconds (variable), it is determined that there is no response.

Time determination processing: The next processing is determined based on the time from the detection of the trigger.

Internal data determination: The next process is determined based on the presence or absence of a work tag.

Waiting for commander's decision ... Wait for the commander's decision.
The next process is determined based on the result of the determination. t1 second (variable)
If there is no instruction during this time, the operation is temporarily suspended, and a determination is made as to whether to cancel or restart.

The result of the device operation of "device response determination ..." is determined.

In the above processing, the operator and the processing apparatus 1
FIG. 4 shows an example of a screen for a man-machine interface between the two.

[0061]

As described above, according to the present invention, according to the present invention, accident situation information is collected from the state of system equipment, a restoration operation pattern having a restoration operation procedure corresponding to the accident situation is searched, and online data or Since the recovery operation is advanced by taking in the judgment operation of the operator, the following effects are obtained.

(1) The system configuration is simpler than that of the conventional expert system, and the functions are clear and the system construction is easy.

(2) The development time and cost can be reduced as compared with the expert system.

(3) The amount of pattern judgment processing is smaller than that of the expert system, and quick operation support can be performed.

(4) A support system can be constructed using the online data collection function of the current power system monitoring and control system.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a basic processing flow for power system restoration support in the embodiment.

FIG. 3 is a driving support processing flow in the embodiment.

FIG. 4 is an example of a man-machine interface screen according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Processing device 2 ... Man-machine interface 3 ... Input / output device 4 ... Database

Claims (1)

[Claims] 1. A power system restoration support system for supporting a system restoration operation according to a power system accident occurrence state, comprising: a man-machine interface for displaying information to a system restoration operator and inputting judgment of the operator; An I / O device that collects monitoring information and status information of system equipment online and transmits device control and operation information online, saves power system information, displays recovery support guidance for operators, and inputs judgment by operators A database that stores a restoration operation pattern for interactively executing the processing system, and a processing device, wherein the processing device detects an occurrence of an accident in the power system based on monitoring information from the input / output device of the power system equipment. When
The current state of the power system is determined by obtaining the state of the power system equipment after the protection operation of the power system as online information from the input / output device and obtaining the power system data from the database, and responding to this power system state. A power system restoration support system, wherein the restoration operation pattern to be restored is searched from the database, and the restoration operation of the electric power system is advanced according to the restoration operation pattern.