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Distribution network fault positioning method based on Bayes formula algorithm

A Bayesian formula and fault location technology, applied in the direction of the fault location, can solve the problem of not being established, and achieve the effect of simple processing and fault location.

Inactive Publication Date: 2015-11-11
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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Problems solved by technology

[0003] At present, the distribution network fault location method in actual operation generally only relies on a single source method as the judgment basis, and the distribution network in some areas with relatively complete basic automation facilities has not established a Bayesian formula based on the fault location of the measurement and control area. Effective fault location system

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  • Distribution network fault positioning method based on Bayes formula algorithm
  • Distribution network fault positioning method based on Bayes formula algorithm
  • Distribution network fault positioning method based on Bayes formula algorithm

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0022] The distribution network fault location method based on the Bayesian formula algorithm includes the following steps:

[0023] S1. Determine the fault circuit;

[0024] (1) A set X of switches whose fault signals are "1" is obtained by the SCADA system, and the switches in X have no relationship between superior and subordinate;

[0025] (2) Choose a switch in the set X, search for the power point, and obtain the set Y of all passing superior switches, and the switches in Y must form a superior-subordinate relationship;

[0026] (3) Determine whether the switch in Y is in X, if not in X, then the fault signal of this switch is set to "0", otherwise it is "1". De...

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Abstract

The invention discloses a distribution network fault positioning method based on a Bayes formula algorithm. The method comprises fault loop determination and switch saliency calculation. For an area with a high power distribution network automation level, an accurate position of a power distribution network fault is finally determined based on fault information returned by a FTU and a SCADA system and a Bayes formula distribution network fault positioning algorithm. Firstly, based on a GIS geometric network, according to fault information, network topology analysis is performed and a complete fault loop is determined so as to reduce a calculation range. And then, saliency of each measurement and control switch in the fault loop is calculated so as to position to a fault area. Based on the fault information returned by the FTU and the SCADA system and a Bayes formula algorithm theory, a set of scientific and systematic power distribution network fault positioning method is established.

Description

technical field [0001] The invention relates to the field of distribution network fault location, in particular to a distribution network fault location method based on Bayesian formula algorithm. Background technique [0002] Distribution network fault location and isolation is one of the key technologies of distribution automation. Distribution network fault recovery and equipment repair are based on accurate fault location. The fault location in the measurement and control area is mainly based on the specific information provided by the data acquisition and monitoring (SCADA) system. By analyzing the distribution network structure and its fault characteristics, and based on the Bayes formula, an algorithm for fault location in the measurement and control area is designed, which shields the influence of interference information and meets the practical problems in this range. [0003] At present, the distribution network fault location method in actual operation generally ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
Inventor 周年荣毛天常亚东张林山杨忠才刘鹏贾廷凯杨学东杨忠华黄晟
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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