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A Fault Section Location Method Based on PGSA-GA Hybrid Algorithm

A hybrid algorithm and fault segment technology, applied in the fields of genetic law, genetic model, design optimization/simulation, etc., can solve the problem that the positioning method is no longer applicable, and achieve the effect of high search speed and computational efficiency

Active Publication Date: 2022-06-14
NANJING INST OF TECH
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Problems solved by technology

Compared with the ordinary distribution network, a large number of distributed power sources are connected to the smart distribution network, which leads to changes in the structure of the distribution network, so the traditional positioning method is no longer applicable

Method used

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  • A Fault Section Location Method Based on PGSA-GA Hybrid Algorithm
  • A Fault Section Location Method Based on PGSA-GA Hybrid Algorithm
  • A Fault Section Location Method Based on PGSA-GA Hybrid Algorithm

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Embodiment Construction

[0039] The present invention is described further below. The following embodiments are intended only to illustrate more clearly the technical solution of the present invention, and can not limit the scope of protection of the present invention.

[0040] The present invention is based on PGSA-GA (simulated plant growth algorithm - genetic algorithm) hybrid algorithm of the complex distribution network fault segment localization method, comprising the following steps:

[0041] 1) Encode the fault current information uploaded by the distribution network FTU (feeder terminal equipment);

[0042] Define the fault current information for node j as follows:

[0043]

[0044] This encodes the fault current sequence as I=[I]. 1 ,I 2 ,......,I N ], where subscript N represents the number of nodes in the distribution network.

[0045] 2) Construct a switching function that dynamically adapts to distributed power generation switching;

[0046]

[0047] where Represents a switch function,...

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Abstract

The invention discloses a method for locating a fault section based on a PGSA-GA hybrid algorithm, which includes the following steps: 1) encoding fault current information uploaded by an FTU of a distribution network; 2) constructing a switching function that dynamically adapts to switching of distributed power sources; 3) Establish the objective function and fitness function of the PGSA-GA hybrid algorithm; 4) Use the PGSA-GA hybrid algorithm to calculate the fault section location and obtain the location result. The invention effectively overcomes the problem of slow search speed of PGSA single algorithm, and improves the speed and efficiency of locating fault sections in complex distribution networks.

Description

Technical field [0001] The present invention relates to a fault segment positioning method based on PGSA-GA hybrid algorithm, belonging to the field of computer simulation technology. Background [0002] Driven by the awareness of green energy conservation, the development of smart grids is in the ascendant and has become a key area of research and development in countries in the world today. Compared with ordinary distribution networks, a large number of distributed generations are connected to the smart distribution network, resulting in changes in the structure of the distribution network, so the traditional positioning method is no longer applicable. In order to improve the operational reliability of complex distribution networks containing distributed generation and quickly restore power supply in fault areas, studying the fault location of complex distribution networks is an important part of the construction of smart distribution networks, and has important roles and signi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/27G06N3/12
CPCG06N3/126G06F30/20
Inventor 倪良华历馨闻佳妍韦伟肖李俊
Owner NANJING INST OF TECH
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