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Fault-tolerance correction method for matrix algorithm fault location result of power distribution network

A technology of matrix algorithm and positioning results, which is applied in the field of fault-tolerant correction of fault positioning results of distribution network matrix algorithms, can solve problems such as limiting the application of feeder automation, slow fault diagnosis speed, and inability to meet the online real-time requirements of fault positioning, and achieve The fault location speed is fast, the location result is accurate and reasonable, and the effect of improving fault tolerance

Active Publication Date: 2013-05-01
SHENYANG POWER SUPPLY LIAONING POWER +2
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Problems solved by technology

Although the genetic algorithm (artificial intelligence algorithm) has good fault tolerance, but the fault diagnosis speed is slow, and often cannot meet the online real-time requirements of fault location
Therefore, due to the shortcomings of various algorithms, the application of feeder automation is limited.

Method used

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  • Fault-tolerance correction method for matrix algorithm fault location result of power distribution network
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  • Fault-tolerance correction method for matrix algorithm fault location result of power distribution network

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Embodiment Construction

[0029] The content of the invention will be further described below in conjunction with the accompanying drawings and examples.

[0030] Such as figure 1 Shown is the circuit diagram of the distribution network in normal operation, the feeder sections D1, D2...D12 are powered by the substation Sub, S1 is the outlet switch of the substation Sub, S2, S3, S4...S11, S12 are feeder section switches, Squares represent circuit breakers, and circles represent load switches; figure 2 for figure 1 The distribution circuit diagram when the middle feeder sections D4 and D11 fail.

[0031] When the distribution network line is faulty, the method of fault-tolerant correction of the fault location result of a distribution network matrix algorithm disclosed in this application can be used for fault location, and the steps are as follows:

[0032] Step 1: After a fault occurs in the distribution network, the master station first collects the fault current information of all feeder switches. ...

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Abstract

The invention discloses a fault-tolerance correction method for a matrix algorithm fault location result of a power distribution network. An evaluation function is utilized to evaluate fault section location results and the splitting-combinations of the location results of the matrix algorithm, a splitting-combination which enables the evaluation function to have the minimum value is selected from the fault section location results and the splitting-combinations of the location results, the splitting-combination is the actual fault section of the power distribution network, and the fault-tolerance location of the fault section of the power distribution network is realized. According to the fault-tolerance correction method, the fault section location results of the matrix algorithm are sufficiently utilized, the evaluation on the fault section location results and the splitting-combinations of the fault section location results, carried out by the evaluation function, is also taken into consideration, no complicated iteration operation is needed, the location speed is high, the accuracy is high, the problems that the fault tolerance of the matrix algorithm of the power distribution network fault location method is poor, the fault location speed of an artificial intelligent algorithm is low, and the location results easily trap into local optima are well solved, and the fault-tolerance correction method is simple and practical and has the prospect of online application.

Description

[0001] Patent field [0002] The invention belongs to the technical field of electric power automation, relates to the field of fault diagnosis of distribution networks, and specifically relates to a method for fault-tolerant correction of fault location results of distribution network matrix algorithms. Background technique [0003] The rapid development of the national economy and the improvement of people's living standards have put forward higher and higher requirements for the reliability of power supply. As the last link of power supply, distribution network largely determines the reliability of power supply in a certain area. Therefore, accelerating the construction of distribution automation is a key factor to improve the reliability of power supply in distribution network. Among them, feeder automation is one of the most important functions of distribution automation, that is, after a distribution network fault occurs, it can timely and accurately locate the fault sec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCY04S10/522Y04S10/52
Inventor 王英男王增平任哲郑涛黄哲洙王瑛
Owner SHENYANG POWER SUPPLY LIAONING POWER
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