Electric Field Analysis and Shielding Optimization of 40.5 kV Wall Bushing

HAN Shaigen; CAO Bin; HUANG Qiang; MA Zongxiong

doi:10.13296/j.1001-1609.hva.2017.01.019

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Electric Field Analysis and Shielding Optimization of 40.5 kV Wall Bushing

更新时间：2025-04-26

- Electric Field Analysis and Shielding Optimization of 40.5 kV Wall Bushing
- High VoltageApparatus Vol. 53, Issue 1, Pages: 113-118(2017)
- 作者机构：
  
  1. 中国电力科学研究院
  2. 华鹏变压器有限公司
  3. 3. 北京慧智神光科技有限公司
  4. 厦门华电开关有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.01.019
  CLC： TM216.5
- Published：2017
- 稿件说明：
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[1]韩筛根,曹彬,黄强,马宗雄.40.5kV穿墙套管电场分析及屏蔽优化[J].高压电器,2017,53(01):113-118.

HAN Shaigen, CAO Bin, HUANG Qiang, et al. Electric Field Analysis and Shielding Optimization of 40.5 kV Wall Bushing[J]. High VoltageApparatus, 2017, 53(1): 113-118.
[1]韩筛根,曹彬,黄强,马宗雄.40.5kV穿墙套管电场分析及屏蔽优化[J].高压电器,2017,53(01):113-118. DOI： 10.13296/j.1001-1609.hva.2017.01.019.

HAN Shaigen, CAO Bin, HUANG Qiang, et al. Electric Field Analysis and Shielding Optimization of 40.5 kV Wall Bushing[J]. High VoltageApparatus, 2017, 53(1): 113-118. DOI： 10.13296/j.1001-1609.hva.2017.01.019.

摘要

文中针对40.5 kV开关柜母线穿墙套管容易发生局部老化导致绝缘能力不足的问题

采用Ansys Workbench软件对穿墙套管进行电场分析查找电场集中位置

提出使用单个地电位屏蔽环或高电位和地电位屏蔽环组合方式解决穿墙套管局部电场集中问题的方法

分析了高、地电位屏蔽环的尺寸以及尺寸变化对穿墙套管电场分布的影响

计算了各个情况下的空气域最大电场值并绘制出曲线

并通过对大量的仿真验证和数据筛选

选择了a=7mm

b=15mm

c=27.6mm

d=17mm

e=25mm

在工频耐压下

穿墙套管周围空气域电场场强为E=2.61×10

V/m。设计出成本较低、电场较好的较为优化的带高、地电位屏蔽的穿墙套管

有效的改善穿墙套管周围的电场分布

提升了穿墙套管的绝缘水平

有效解决了开关柜母线绝缘套管局部绝缘能力不足的问题

提高了设备运行可靠性。

Abstract

This paper is aimed at the problem that the busbar bushing of 40.5 kV switchgear is prone to local aging

the Ansys Workbench software is used to analyze the electric field of the wall bushing and find the concentrated position of the electric field.The method of using a single potential shield loop or high potential and ground potential shield ring combination to solve the local electric field concentration problem of the wall bushing is proposed in this paper. Also the effects of the size and size of the shield ring on the electric field distribution of the wall bushing are analyzed.In this paper

b=15 mm

c=27.6 mm

d=17 mm

e=25 mm

and the maximum elec-tric field value of the air field in each case is calculated and the curve is plotted. Through a lot of simulation verification and data screening

under the power frequency withstand voltage

the field strength of the air around the casing wall is E =2.61 ×106V/m.The design of the lower cost

the electric field is better optimized with high

ground potential shielding of the wall bushing

effectively improve the wall around the casing wall electric field distribution

improve the insulation level of the wall bushing

effectively solve the problem of insufficient insulation capability of the busbar insulation sleeve of switchgear

and improve the reliability of equipment operation.

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