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Power distribution network fault positioning method and system based on matrix and intelligent algorithm

A technology of distribution network fault and intelligent algorithm, applied in fault location, information technology support system, measurement of electricity, etc., can solve problems such as difficulty in fault location, complex topology of distribution network network, etc., to achieve simple identification methods and improved accuracy performance and judgment efficiency, and the effect of a small amount of computation

Pending Publication Date: 2021-10-08
SHANGHAI DIANJI UNIV
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AI Technical Summary

Problems solved by technology

[0002] In recent years, with the improvement of technology, the application of multiple power sources, distributed power sources and overhead-cable hybrid lines in distribution networks has become more and more extensive, making the network topology of distribution networks more complex and fault location more difficult

Method used

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  • Power distribution network fault positioning method and system based on matrix and intelligent algorithm
  • Power distribution network fault positioning method and system based on matrix and intelligent algorithm
  • Power distribution network fault positioning method and system based on matrix and intelligent algorithm

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Embodiment

[0047] A distribution network fault location method based on matrix and intelligent algorithm, such as figure 1 shown, including the following steps:

[0048] (1) Obtain the fault current information, and judge whether there is a fault current, if there is, go to step (2), otherwise return to step (1).

[0049] In step (1) of this embodiment, the FTU, that is, the feeder interruption unit, uploads the fault information for processing, which includes the faulty node segment information.

[0050] (2) Construct the network description matrix of the distribution network, obtain the fault information matrix, and obtain the fault judgment matrix according to the network description matrix and the fault information matrix.

[0051] In this embodiment, the network description matrix is:

[0052]

[0053] Among them, A is the network description matrix, n is the number of nodes in the distribution network, and a 11 、a 12 ,...,a nn To describe the matrix parameters,

[0054] Th...

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Abstract

The invention relates to a power distribution network fault positioning method and system based on a matrix and an intelligent algorithm, and the method comprises the following steps: S1, obtaining fault current information, judging whether a fault current exists or not, if yes, entering a step S2, and otherwise, returning to the step S1; S2, acquiring a fault judgment matrix according to the network description matrix and the fault information matrix; S3, obtaining a fault section, if the fault section is a single fault, entering a step S4, and if the fault section is a multiple fault, entering a step S5; S4, positioning the fault section based on an artificial intelligence algorithm, and if the result is consistent with a matrix algorithm positioning result, entering step S6; S5, selecting the split combination with the minimum evaluation function as a fault section combination; and S6, completing fault section positioning, and sending opening commands to feeder switches on the two sides of the fault section. Compared with the prior art, the method has the advantages of high calculation speed, high practicability, high processing accuracy and the like.

Description

technical field [0001] The invention relates to the technical field of power system fault detection, in particular to a distribution network fault location method and system based on a matrix and an intelligent algorithm. Background technique [0002] In recent years, with the improvement of technology, the application of multiple power sources, distributed power sources and overhead-cable hybrid lines in distribution networks has become more and more extensive, making the network topology of distribution networks more complex and fault location more difficult. As an important part of the power system, the distribution network is constantly increasing in size and becoming more complex. Once a fault occurs in the distribution network, the longer it takes to deal with the fault, the more serious the economic loss will be. Therefore, how to It is a very important problem to quickly and accurately deal with various faults in the distribution network. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/088Y04S10/52
Inventor 李亚檑张晓红
Owner SHANGHAI DIANJI UNIV
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