Numerical Calculation of There-dimensional Electric Field and Optimal Design of 1 100 kV Class B-type Earthing Switch

ZHANG Zhiwen; YAN Xiaomin; DENG Wenhua; WANG Chunhua; ZHAO Jiankang

doi:10.13296/j.1001-1609.hva.2019.03.002

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Numerical Calculation of There-dimensional Electric Field and Optimal Design of 1 100 kV Class B-type Earthing Switch

更新时间：2025-04-26

- Numerical Calculation of There-dimensional Electric Field and Optimal Design of 1 100 kV Class B-type Earthing Switch
- High VoltageApparatus Vol. 55, Issue 3, Pages: 8-14(2019)
- 作者机构：
  
  1. 湖南大学电气与信息工程学院
  2. 湖南长高高压开关集团股份公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.03.002
  CLC： TM15
- Published：2019
- 稿件说明：
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[1]张志文,严小敏,邓文华,王春华,赵健康.1 100 kV B类接地开关三维电场数值计算与优化设计[J].高压电器,2019,55(03):8-14.

ZHANG Zhiwen, YAN Xiaomin, DENG Wenhua, et al. Numerical Calculation of There-dimensional Electric Field and Optimal Design of 1 100 kV Class B-type Earthing Switch[J]. High voltageapparatus, 2019, 55(3): 8-14.
[1]张志文,严小敏,邓文华,王春华,赵健康.1 100 kV B类接地开关三维电场数值计算与优化设计[J].高压电器,2019,55(03):8-14. DOI： 10.13296/j.1001-1609.hva.2019.03.002.

ZHANG Zhiwen, YAN Xiaomin, DENG Wenhua, et al. Numerical Calculation of There-dimensional Electric Field and Optimal Design of 1 100 kV Class B-type Earthing Switch[J]. High voltageapparatus, 2019, 55(3): 8-14. DOI： 10.13296/j.1001-1609.hva.2019.03.002.

摘要

接地开关的静电场仿真计算可以指导产品的结构优化

从而缩短产品研发周期降低产品研发费用。为了得到接地开关表面电场

以承德特高压串补用串1 100 kV B类接地开关为样本

计算接地开关分闸状态下表面电场分布。首先依据设计尺寸利用SolidWorks软件对接地开关进行实体建模;然后依据三维有限元数值计算法对接地开关典型时刻下的电场电位进行了三维有限元仿真计算

得出其电位及表面电场分布;仿真结果显示高场强出现在辅助回路均压环、静触头均压环及动触头表面;接着对接地开关高场强区域进行了优化设计

优化后均压环表面场强在安全范围内

动触头表面场强得到显著改善;最后对优化后的接地开关进行静电感应电流开合试验

试验通过

证明了优化的合理性。该仿真结果可以为1 100 kV B类接地开关的研发及推广提供理论参考。

Abstract

The electrostatic field simulation can help to guide the structure optimization of an earthing switch

shortenthe product development cycle

and reduce the product development costs. In this study

a 1 100 kV B-type earthingswitch for the supplemental lines of Chengde UHV transmission line was taken as an example to calculate the electricfield distribution around the switch surface in open state. Firstly

according to the design dimensions

a three-dimension-al mathematical model was established using the software SolidWorks. Secondly

according to the three-dimensional fi-nite element numerical method

the finite element analysis software was used to calculate and analyze the electric poten-tial and electric field around the earthing switch surface at the typical moment

thus the electric potential and field distri-bution were obtained. Simulation result showed that higher electric field intensity appeared on the auxiliary loop gradingring

static contact grading rings and moving contact. Thirdly

optimal design for these high electric field intensity areaswas carried out

consequently the electric field around grading ring surface was in safe range

and the electric fieldaround moving contact surface was significantly improved. Finally

electrostatic induction current switching tests wereconducted on the optimized earthing switch

verifying the rationality of the optimization. This study may provide a theo-retical reference for development and popularization of 1 100 kV B-type earthing switch.

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Related Institution

College of Electrical and Information Engineering,Changsha Universityof Science & Technology

Hechi Power Supply Bureau of Guangxi Power Grid Co., Ltd.

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College of Electrical Engineering, Shanghai University of Electric Power

Institute of Electrical Engineering Chinese Academy of Sciences

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