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Combined insulator voltage-sharing structure optimization design method

A technology of voltage equalization structure and optimized design, applied in the field of high-voltage transmission lines, can solve the problems of pollution flashover, increase in volume and weight, poor pollution resistance of porcelain insulators, etc., and achieve the effect of strong search ability.

Pending Publication Date: 2021-05-07
XIAN UNIV OF TECH
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Problems solved by technology

However, in recent years, with the intensification of environmental pollution, the disadvantages of porcelain insulators such as poor pollution resistance have gradually become prominent, and lightning strikes and pollution flashover accidents have occurred frequently, causing great losses
In addition, the increase in voltage level has led to a gradual increase in the volume and weight of porcelain insulators, which has brought great inconvenience to installation, cleaning and maintenance, so porcelain insulators will gradually be replaced by other insulators

Method used

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  • Combined insulator voltage-sharing structure optimization design method
  • Combined insulator voltage-sharing structure optimization design method
  • Combined insulator voltage-sharing structure optimization design method

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Embodiment Construction

[0060] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0061] The invention provides a method for optimizing the design of a combined insulator voltage equalization structure, the specific steps are:

[0062] (1) Use ANSYS software to establish a three-dimensional finite element model of actual size, and establish an electric field analysis program for composite insulators. The program takes the dielectric constant of porcelain insulators as an input variable and outputs electric field calculation results.

[0063] (2) The dielectric constant of the porcelain insulator is used as the optimization decision variable and its value range is determined, and the corresponding optimization objective function is determined based on the maximum electric field strength of the key parts.

[0064] (3) After the optimization objective function is normalized, the judgment matrix method is used to analyze the w...

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Abstract

The invention discloses an optimal design method for a voltage-sharing structure of a combined insulator. The method comprises the specific steps: simulating the combined insulator through ANSYS software, and calculating electric field distribution of the combined insulator; determining a value range of a decision variable, and establishing a target function; and optimizing the target function by adopting a hybrid differential evolution algorithm based on simulated annealing operation. According to the combined insulator voltage-sharing structure optimization design method, distribution of dielectric properties in the porcelain insulator is regulated and controlled, electric field distribution on the surface of the insulator is effectively regulated and controlled, the hybrid differential evolution algorithm is applied, the high searching capability of the differential evolution algorithm is reserved, and the defects that the solution of a complex optimization problem is caught in a local solution due to premature convergence, the convergence in the later stage of evolution is slow and the solution precision is not high are overcome.

Description

technical field [0001] The invention belongs to the technical field of high-voltage transmission lines, and in particular relates to an optimal design method for a combined insulator voltage equalization structure. Background technique [0002] Insulators are important components of high-voltage transmission lines. Electrotechnical ceramics were widely used in transmission lines in the early days because of their outstanding insulation properties, good force-bearing capacity, and good economic benefits. However, in recent years, with the intensification of environmental pollution, the disadvantages of porcelain insulators such as poor pollution resistance have gradually become prominent, and lightning strikes and pollution flashover accidents have occurred frequently, causing great losses. In addition, the increase in voltage level has led to a gradual increase in the volume and weight of porcelain insulators, which has brought great inconvenience to installation, cleaning a...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/17G06N3/00G06F111/06G06F111/08G06F113/16
CPCG06F30/23G06F30/17G06N3/006G06F2111/06G06F2113/16G06F2111/08Y02E60/00
Inventor 王闯雷康贾静孙青
Owner XIAN UNIV OF TECH
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