JPH02299425A - Trouble restoration operation of electric power system - Google Patents

Abstract

PURPOSE:To permit prompt trouble restoration by a method wherein restoration operation is effected by constituting a system restoration commanding sequence producing process, producing the opening and/or closing sequences of a switch additionally, integrally with an execution process even when the conditional change of the switch in an electric power system is generated during carrying out restoration sequence data. CONSTITUTION:A present system after accident is compared with a system whose restoration is determined to extract a switch, whose opening operation is necessary, and effects system restoration operation sequence production and an execution process. Subsequently, the process is effected while returning to an initial point when the production of an opening operation sequence becomes necessary due to the conditional change of another switch during execution. When the production of the opening operation sequence is not necessary, the present system is compared with a system whose restoration is determined to extract the switch, whose throwing operation is necessitated, produce and carry out the sequence, then, the production of system restoration closing operation sequence and executing process are effected. When the production of the closing operation sequence becomes necessary, the restoring operation is returned to the production of the system restoration closing operation sequence and the execution process. When all of the operating sequence productions become unnecessary, the restoring operation of the system may be finished.

Description

[Detailed description of the invention] [Industrial application field]

TECHNICAL FIELD The present invention relates to a power system fault recovery operation method for dealing with recovery when a wide-area power system fault occurs.

[Conventional technology]

Figure 2 shows, for example, the automatic recovery operation in the event of an accident in a conventional electric power system, as shown in ``Development of an accident recovery operation method for local supply systems'', Kasuya, Oda et al. This is a conceptual diagram of the method, and in the diagram, 1 is an electronic computer;
2 is basic configuration data of the electric power system, 3 is online input data, and 4 is recovery procedure data output by the computer 1, which is a recovery operation in the event of a grid failure. Next, the operation will be explained. First, the computer 1, which is the core of the automatic recovery control system, collects basic configuration data 2 and online input data 3 of the electric power system in charge, and outputs recovery procedure data 4. The basic configuration data 2 of the power system shows equipment name data such as circuit breakers, disconnectors, power transmission and distribution lines, transformers, generators, etc. that make up the power system in charge, and the adjacency relationship of these equipment groups. combined data,
For transmission 1, power capacity data etc. that are allowable for equipment groups such as lines, busbars, transformers, and power sources are prepared. When an accident occurs, the power system can be restored by dividing the processing between the substation system computer and the power supply system computer according to the flowchart shown in Figure 3, and organically linking the computers via the transmission network. We aim to integrate commands and operations. First, in Step STI, when a power system accident occurs, it automatically detects the occurrence of the accident based on display measurement information input from the substation system, and also determines the status of charging and power outage equipment based on operation information of circuit breakers, protection relays, etc. Determine faulty equipment within the system. Next, in step ST2, if the power transmission line is determined to be an accidental equipment based on the accidental equipment determination result, it is determined whether the conditions for power retransmission are satisfied. If possible, create a power retransmission operation procedure, automatically transmit the command to the substation system, and after performing the operation of the substation system, determine the result of the power retransmission operation from the displayed measurement information and confirm the faulty equipment. . If not, it is determined that the accident equipment is in accordance with the accident equipment determination result. In addition, in step ST3, the system that remains in a power outage state even after the power supply retransmission process is set as the system to be restored, and the accident recovery logic is developed, and the system that can actually be restored without overloading (hereinafter referred to as the restoration decision system) is developed. ). Furthermore, in step ST4, the current system after the accident is compared with the restoration determined system, and a system restoration command procedure is automatically created to change the system configuration from the current system to the restoration determined system. Similar to the power retransmission operation, this system restoration command procedure is automatically transmitted to the substation system as a power supply command, and the substation system executes the operation.

[Problem to be solved by the invention]

Since the conventional power system accident recovery operation method is executed as described above, the creation of the grid recovery command procedure and the execution of the grid recovery command are processed in series, and the execution of the grid recovery command If a change in the status of a switch occurs in the power system during a power system, it is necessary to cancel the system restoration command procedure and then create the procedure again in order to make the restoration decision system.
If the switch status changes occur continuously, command execution is delayed and it takes time to recover from an accident, and the power supply system has problems such as increased computer load and slow response times. there were. This invention was made to solve the above-mentioned problems, and it is possible to create and execute an operation procedure by adding operations without canceling the operation procedure due to a change in the state of the switch during processing. The purpose of the present invention is to obtain an operation method for recovering from an accident in a power system, which enables quick recovery from an accident and suppresses an increase in unnecessary load on computers.

[Means to solve the problem]

In the power system accident recovery operation method according to the present invention, even if a change in the state of a switch occurs in the power system during the execution of recovery procedure data, the recovery operation procedure that has already been created is not canceled and the switches are sequentially restored. The system restoration operation is performed by integrating a system restoration command procedure creation process and an execution process for creating an additional opening or closing operation procedure.

[Effect]

The power system accident recovery operation method in this invention integrates the system recovery command procedure creation process and the system recovery command execution process, so that even if a change in the state of a switch occurs during the process, the recovery procedure does not need to be deleted. , to enable recovery by creating additional files in sequence.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the same parts as in FIG. 3 are shown with the same reference numerals. In FIG. 1, step STI is an accident detection/power outage equipment determination and accident equipment determination processing group. Step ST2 is a power supply retransmission procedure creation/execution processing group, step ST3 is an accident recovery logic processing, and step ST5 is a system restoration command procedure creation/execution processing group. Next, the operation will be explained. First, the operations from step ST1 to step ST3 are the same as those of the prior art, so the explanation will be omitted. In step ST5, the current system after the accident and the restoration determined system are compared, switches that require an opening operation are extracted, and a system restoration opening operation procedure creation/execution process is performed in which the procedure is created and executed. After that, if it becomes necessary to create an opening operation procedure due to a change in the state of another switch during the creation and execution of the procedure, the process returns to the beginning and performs the process. In addition, if it is not necessary to create an opening operation procedure, compare the current system with the restoration determined system, extract the switch that requires closing operation, create and execute the procedure, and create a system restoration closing operation procedure.・Perform execution processing. Thereafter, if it becomes necessary to create an opening operation procedure due to a change in the state of another switch during the creation and execution of the procedure, the process returns to the system recovery opening operation procedure creation and execution process. Also, if it becomes necessary to create a closing operation procedure, the process returns to the process of creating and executing a system recovery closing operation procedure. In this way, if all the operation procedure creation becomes unnecessary, the system restoration operation is completed.

【Effect of the invention】

As described above, according to the present invention, the creation and execution of the system restoration operation procedure is integrated in units of the opening operation procedure and the closing operation procedure to form the system restoration command procedure creation and execution processing group.
It becomes possible to create and execute an operating procedure by adding operations without canceling the operating procedure due to a change in the state of the switch. In addition, even if a continuous switch status change occurs, it is possible to recreate the operation procedure all at once after completing the creation and execution of the operation procedure, allowing the computer to return to the initial stage and process the process. This has the effect of quickly creating and executing operating procedures without having to perform unnecessary re-creation processing.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing a power system accident recovery operation method according to an embodiment of the present invention, FIG. 2 is a conceptual diagram of a conventional power system accident recovery operation method, and FIG. 3 is a conventional accident recovery operation method. It is a flowchart. In the figure, 1 is an electronic computer, 2 is basic configuration data of the electric power system, 3 is online input data, and 4 is recovery procedure data. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. (2 others) Figure 2

Claims (1)

[Claims] When an accident occurs in a power system, the basic configuration data and online input data of the power system are input into a computer, and the power outage equipment is determined for the system immediately after the accident, where the connection state has changed due to the power outage, and In the power system accident recovery operation method, which outputs and executes recovery procedure data for automatically restoring the power system based on the information of the power outage facility and the accident facility, determining the faulty facility among the facilities, When a change in the state of a switch occurs in the power system during creation and execution, a system restoration command procedure creation process that adds a switch opening or closing operation procedure to the created restoration procedure data and the created system restoration A power system accident recovery operation method characterized by integrating command procedure execution processing.