Method for composite insulator electric field optimization of power transmission line

A technology of composite insulators and transmission lines, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., and can solve problems such as corona discharge and threats to safe power operation

Inactive Publication Date: 2016-01-13
南通河海大学海洋与近海工程研究院
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  • Description
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Problems solved by technology

The strong electric field will increase the chance of corona discharge on the surface of insulator strings and metal fittings, which will pose a serious threat to the safe operation of electricity

Method used

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  • Method for composite insulator electric field optimization of power transmission line
  • Method for composite insulator electric field optimization of power transmission line
  • Method for composite insulator electric field optimization of power transmission line

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Embodiment

[0082] The genetic algorithm module GATBX of the University of Sheffield is written in M ​​language, and provides a wide variety of practical functions for users who use genetic algorithms to solve problems. When encoding genetic algorithm functions, advanced selection operators, advanced recombination operators and discrete mutation operators are used. son. The execution modes of several operators mainly used in the present invention include selection operator select, crossover operator recombin, mutation operator mut, and reinsertion operation reins.

[0083] In order to enable the user to understand and control the calculation progress during the long-term operation of the algorithm, it is necessary to use voice prompts. The present invention uses the Microsoft Speech COM component SAPI (TheMicrosoftSpeechAPI) to achieve.

[0084] Set the number of populations to 10, the number of iterations to 200 generations, and optimize the sheds for the field strength range_E. The opti...

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Abstract

The invention discloses a method for composite insulator electric field optimization of a power transmission line. The method comprises the following steps of 1) carrying out numerical calculation on composite insulator electric field intensity in Maxwell software; 2) calling a genetic algorithm toolbox (GATBX) module of MATLAB software in Maxwell visual basic script (VBS); 3) optimizing umbrella skirt radius by using a single target genetic algorithm in the MATLAB software; and 4) obtaining optimized composite insulator electric field distribution by taking large radius, medium radius and small radius of an umbrella skirt as optimization variables. According to the method, the large radius, the medium radius and the small radius of the umbrella skirt of a composite insulator are optimized respectively by taking minimum field intensity Range-E and minimum field intensity maximum of gradients Max-Grad as single optimization targets, so that the composite insulator electric field distribution is more uniform.

Description

technical field [0001] The invention relates to a method for optimizing the electric field of a composite insulator of a power transmission line, and belongs to the technical field of optimizing the electric field distribution of a composite insulator. Background technique [0002] In recent years, composite insulators have been widely used in my country's power system due to their advantages of good anti-fouling performance, light weight, and easy maintenance. However, due to its shape characteristics, fitting structure and low conductivity of silicone rubber materials, the composite insulator makes the potential distribution decay rapidly from the high voltage end. Such potential distribution makes a higher electric field near the high voltage end and the grounding end. If the electric field strength on the surface of the insulator exceeds the corona initial field strength (0.45kV / mm), corona discharge will occur. The strong electric field will increase the chance of coro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N3/12
CPCY02E60/00
Inventor 苗红霞齐本胜
Owner 南通河海大学海洋与近海工程研究院
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