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Method, device and system for fault diagnosis of transformer substation

A technology for substations and fault areas, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of not being able to obtain power system fault areas in a timely and accurate manner, and achieve the effects of easy expansion, improved versatility, and strong adaptability

Active Publication Date: 2014-06-11
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0004] In view of this, the present invention provides a substation fault diagnosis method, device and system, which solves the technical problem that the fault diagnosis method in the prior art cannot obtain the fault area of ​​the power system in a timely and accurate manner

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  • Method, device and system for fault diagnosis of transformer substation
  • Method, device and system for fault diagnosis of transformer substation
  • Method, device and system for fault diagnosis of transformer substation

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Embodiment Construction

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0062] The embodiment of the present invention discloses a substation fault diagnosis method. According to the causal relationship between different associated nodes in the substation, a first fuzzy rule matrix is ​​constructed. The associated nodes may include relays, circuit breakers and preset fault areas. The first The elements of the fuzzy rule matrix include preset causal relationship values ​​between the associated nodes. When a fault occurs in the subst...

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Abstract

The invention discloses a method for fault diagnosis of a transformer substation. The method comprises the steps of constructing a first fuzzy rule matrix according to the causal relationship of different association nodes of the transformer substation, wherein each association node comprises a relay, a breaker and a preset fault area, and the element of the first fuzzy rule matrix comprises preset causal relationship values between the association nodes; constructing a first state vector according to obtained first state information of the relays and the breakers in the fault process of the transformer substation, wherein the element of the first state vector comprises first state values corresponding to the association nodes; conducting blurring operation on the first fuzzy rule matrix and the first state vector, updating the first state value in the first state vector according to the preset causal relationship values, and obtaining a second state value; comparing the second state value corresponding to a preset fault area with the fault threshold value, and determining the target fault area in the preset fault area. According to the method, the accuracy and rate of fault diagnosis of the transformer substation are improved.

Description

technical field [0001] The invention relates to the technical field of automatic control systems, and more specifically relates to a substation fault diagnosis method, device and system. Background technique [0002] With the development of the national economy, high-quality, reliable and stable power supply has become the general requirement of power users. However, in the actual operation of the power system, the outgoing line or busbar of the power system often fails due to various factors such as natural and human factors. , thereby reducing the power supply quality of the power system, and even interrupting the power supply of the power system, affecting the normal operation of the power system. Therefore, when a power system fails, how to accurately and quickly find the fault area is particularly important. [0003] At present, the substation is an important foundation and support of the power system. When the power system fails, the SCSDA system (Supervisory Control A...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22
Inventor 童钧徐国钧杨朝阳华靓杨占胜杜忠胡晓琴
Owner STATE GRID CORP OF CHINA
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