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Building method of alarm reasoning knowledge base of intelligent transformer substation

A technology of intelligent substation and reasoning knowledge, which is applied in the fields of electrical digital data processing, structured data retrieval, database design/maintenance, etc. It can solve the problems of low reliability and differentiation, and achieve the effect of improving reliability.

Inactive Publication Date: 2014-10-22
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for constructing an alarm reasoning knowledge base of an intelligent substation, which can solve the problem that the existing alarm reasoning knowledge base cannot distinguish different fault causes from the same fault phenomenon, resulting in low reliability

Method used

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  • Building method of alarm reasoning knowledge base of intelligent transformer substation
  • Building method of alarm reasoning knowledge base of intelligent transformer substation

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Embodiment Construction

[0015] The construction method of the knowledge base for the instantaneous A-phase ground fault alarm reasoning of 220kV line includes the following steps:

[0016] (1) First consider the conditions of the A-phase protection action exit, the A-phase switch position separation, the protection reclosing action, and the BC-phase switch position keeping the same position, and then consider the time sequence relationship and time interval relationship between each action signal, Supplemented with the actual processing experience of the operating personnel, it can be concluded that figure 1 The protection logic diagram shown;

[0017] (2) if figure 2 As shown, create an intelligent alarm knowledge object in the integrated alarm monitoring system, create an inference rule object under the intelligent alarm knowledge object, name it "inference knowledge base", and create two inference conditions under the inference rule object created in the previous step Object and two inference r...

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Abstract

The invention discloses a building method of an alarm reasoning knowledge base of an intelligent transformer substation. The method comprises the following steps that (1), a protection logic diagram is built according to a matching relation between action signals generated by a protection device and a breaker respectively, the important grade of actions of the protection device, the relation between main protected devices related to the effective protection actions generated by the protection device, and the time sequence relation and time interval relation between the action signals; (2), an intelligent alarm knowledge object is built in an integrated alarm monitoring system, and the protection logic diagram obtained in the step (1) is converted to be the intelligent alarm reasoning knowledge base by adding a reasoning condition object and a reasoning rule object into the intelligent alarm knowledge object. By combining the time sequence relation and the time interval relation generated by the fault phenomenon, different fault reasons finally generating multiple same fault phenomena are distinguished, and the reliability of the fault reasons obtained by reasoning analysis is improved greatly.

Description

technical field [0001] The invention relates to the field of intelligent substations, in particular to a method for constructing an alarm reasoning knowledge base of an intelligent substation. Background technique [0002] The State Grid Corporation of China clearly proposed to build an "intelligent grid with informationization, automation and interaction", and plans to fully build a unified smart grid by 2020. The substation is an important facility of the power grid, and a large number of electrical equipment are installed. The smart substation takes the primary and secondary equipment of the substation as the digital object, and is based on the high-speed network communication platform. operate. [0003] The amount of alarm information in smart substations is much larger than that in conventional substations. When a fault occurs, the system will receive a large amount of alarm information in a short period of time, which will cause a greater burden on system operation. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/21
Inventor 徐晓春李佑伟赵娜汤同峰王巍巍施广德骆兆军朱杰媛熊晔
Owner STATE GRID CORP OF CHINA
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