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Method for controlling system recovery based on network reconfiguration

A system recovery and control method technology, applied in the field of power systems, can solve the problems of no network reconfiguration processing, no ability to send control commands, etc., to achieve the effect of solving combination explosion and solving the huge search space

Active Publication Date: 2011-09-14
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

After receiving the fault information, the current CC-2000 system does not perform further processing on network reconstruction, nor does it have the function of sending control commands to related control devices

Method used

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  • Method for controlling system recovery based on network reconfiguration
  • Method for controlling system recovery based on network reconfiguration
  • Method for controlling system recovery based on network reconfiguration

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Experimental program
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Embodiment Construction

[0027] see figure 1 Flow chart of recovery control reasoning according to the method of the present invention.

[0028] The control command in network reconfiguration refers to a series of switching operation commands necessary to restore power supply after a fault occurs. According to the different switching actions, the control commands are divided into two categories: the switching command and the closing command. It is necessary to be cautious in formulating the connection cut command. Only when the closing operation does not satisfy the synchronization or network security after calculation and analysis in advance can the necessary lines or loads be cut off. After the switch command is issued, it should be confirmed whether the switch operation is successful.

[0029] In consideration of preventing asynchronous paralleling and overloading, etc., the closing command is usually executed after the switching command. Before sending the closing command, it should be checked ...

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Abstract

The invention provides a method for controlling system recovery based on network reconfiguration FDIR (Failure Detection, Isolation and Recovery). The method comprises the following steps of: recovering power supply to 75-90 percent of load of a system within a shortest period of time according to the practical running condition and recovery initial state of an electric network with a recovery target screening method, wherein during selection of recovery targets and determination of a recovery step, common problems require to be considered; in a system recovering process, achieving the major targets of supplying power to a power plant and a transformer station, decomposing the major targets into a series of relevant sub-targets via path search, feasibility verification, switch-on / off operation and the like and resolving respectively; performing synchronization operation, decomposing an island station to be synchronized serving as a target station into sub-targets such as path search, feasibility verification, switch-on / off operation and the like and resolving respectively; and establishing a shortest path search algorithm which combines breadth-first with depth-first by adopting a station-oriented level-by-level reasoning control strategy on the basis of an electric network structural model knowledge base so as to well solve the problems of huge search space and combination explosion.

Description

technical field [0001] The invention belongs to the field of power systems and provides a system recovery control method based on network reconfiguration (FDIR). Background technique [0002] In the operation of modern power systems, large-scale power outages in power systems are issues that require great attention. In recent years, there have been many large-scale power outages due to the stability of the domestic and foreign power systems, which have caused great damage to the national economy and greatly affected the society and people's lives. Ensuring the safe and stable operation of the power system and preventing large-scale power outages is an urgent and important task facing the modern power system. On the other hand, once an accident occurs in the power system, how to take correct and effective measures to minimize the scope of power outage, shorten the time of power outage, and restore power supply as soon as possible becomes an issue that is as important as prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H3/06
Inventor 周京阳彭国政李强贾育培
Owner CHINA ELECTRIC POWER RES INST
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