Power distribution network failure cause analyzing method based on expert system and D-S evidence theory

A technology of distribution network faults and evidence theory, applied in data processing applications, information technology support systems, instruments, etc., can solve problems such as waste of manpower, low efficiency, and long time to find the cause of faults, and achieve fast, accurate, and accurate analysis. high efficiency effect

Inactive Publication Date: 2014-06-18
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0004] At present, there is almost no in-depth research on the analysis of the fault causes of the distribution network. Now the main method for finding the cause of the fault in the distribution network is the manual line inspection method. The manual line inspection method is mainly based on the fault indicator on the line or distribution automation. The fault area indication is located, and the fault point on the distribution line is f

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  • Power distribution network failure cause analyzing method based on expert system and D-S evidence theory
  • Power distribution network failure cause analyzing method based on expert system and D-S evidence theory
  • Power distribution network failure cause analyzing method based on expert system and D-S evidence theory

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[0038] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0039] A kind of distribution network failure cause analysis method based on expert system and D-S evidence theory of the present invention comprises the following steps,

[0040] Step S01: Determine the information required for analysis of the distribution network fault cause and its source, the required information specifically includes fault information and non-fault information;

[0041] Step S02: Use the expert system to conduct a preliminary failure cause analysis as a preliminary conclusion;

[0042] Step S03: Take each of the above preliminary conclusions as a basic trust distribution function; use the synthesis method of D-S evidence theory to synthesize each basic trust distribution function into a final basic trust distribution function, and the final basic trust distribution function is the final conclusion, that is, Causes of ...

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Abstract

The invention relates to a power distribution network failure cause analyzing method based on an expert system and the D-S evidence theory. The method comprises the steps that information needed by power distribution network failure cause analysis and the source of the information are determined firstly, and the needed information comprises failure information and non-failure information; then, primary failure cause analysis is carried out through the expert system, and primary conclusions are obtained; finally, each primary conclusion is adopted as a basic trust distributive function, the basic trust distributive functions are integrated into a final basic trust distributive function through the combination mode of the D-S evidence theory, the final basic trust distributive function is the final conclusion, and the power distribution network failure cause is obtained. According to the method, the most precise conclusion of the failure cause is obtained according to various kinds of information based on reasonable derivation, therefore, the power supply reliability of a power distribution network can be overall improved, and economic benefits can be improved.

Description

technical field [0001] The invention relates to a method for analyzing the cause of a distribution network failure, in particular to a method for analyzing the cause of a distribution network failure based on an expert system and D-S evidence theory. Background technique [0002] In modern power systems, large-scale power plants are often far away from the load center. The power generated by the power plant is generally sent to the load center through a high-voltage or ultra-high-voltage transmission network, and then the power is distributed to different voltages by a network with a low voltage level in the load center. level users. This kind of network that mainly distributes electric energy in the power grid is called a power distribution network. The power distribution network mainly supplies electricity for a region, so it is also called the local power network. Compared with the regional power network, its voltage level and power supply range are smaller, but its big...

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Application Information

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IPC IPC(8): G06Q50/06
CPCY04S10/50
Inventor 李天友陈青吴文宣陈彬
Owner STATE GRID CORP OF CHINA
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