Potential Relation between Resistors and Porcelain in 1000 kV MOA

WANG Qiong1; AN Cui-cui1; MA Wen-ling2; DOU Xiao-jing1; LIU Hang1; ZHANG Yuan-bin1

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Potential Relation between Resistors and Porcelain in 1000 kV MOA

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- Potential Relation between Resistors and Porcelain in 1000 kV MOA
- High VoltageApparatus Vol. 44, Issue 6, Pages: 531-533(2008)
- 作者机构：
  
  1. 西安交通大学电气工程学院
  2. 长安大学理学院物理系
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM862
- Published：2008
- 稿件说明：
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[1]王琼,安翠翠,马文玲,窦小晶,刘航,张源斌.1000kV瓷外套MOA电阻片与瓷套电位关系的研究[J].高压电器,2008,44(06):531-533.

WANG Qiong1, AN Cui-cui1, MA Wen-ling2, et al. Potential Relation between Resistors and Porcelain in 1000 kV MOA[J]. High voltageapparatus, 2008, 44(6): 531-533.
[1]王琼,安翠翠,马文玲,窦小晶,刘航,张源斌.1000kV瓷外套MOA电阻片与瓷套电位关系的研究[J].高压电器,2008,44(06):531-533. DOI：

WANG Qiong1, AN Cui-cui1, MA Wen-ling2, et al. Potential Relation between Resistors and Porcelain in 1000 kV MOA[J]. High voltageapparatus, 2008, 44(6): 531-533. DOI：

摘要

为了提高电力系统运行的可靠性

笔者依据一个特定的实体模型

采用有限元ANSYS分析软件对1 000 kV系统用瓷外套MOA建立2-D模型

进行场强和电位分布计算

比较了采用并联均压电容前后MOA内部电阻片与瓷套内侧的电位和场强分布的变化。结果表明

MOA电阻片与瓷套内侧容易发生放电或闪络现象的位置分别为第1、4节单元距单元上法兰1/6～1/5处;并联均压电容之后各单元电阻片上的场强和承担的电压趋于均匀化

但某些单元的径向场强和电位差变大

在避雷器设计制造时应引起关注。

Abstract

A 2D-axisymmetric model of 1000 kV MOA was established based on the special structure of MOA

and the electric field and potential distribution of MOA was calculated by using the numerical analysis software ANSYS to improve the reliability of power system.The electric field and potential distributions of the resistors and inside porcelain with and without shunting capacitors were compared.The result shows that discharge or flashover most possibly occurs at the resistor or inside porcelain in first or forth section leaving the up flange for about 1/6～1/5 of section.The field and potential distribution of resistors in each section tends to be uniform with the shunting capacitors paralleled.However

the radial field and potential difference in some sections are enhanced

which should be taken into account in the design and manufacture of arrester.

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Related Author

YUE Ya-li

WU Ying-ying

CHEN De-xing1

ZHANG Yong-ji1

JIN Wen-jie2

ZHANG Yuan-bin2

XIE Zhibiao

WANG Chen

Related Institution

Zhanjiang Power Supply Bureau

Fujian Extra High Voltage Transmission & Substation Bureau

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

Electric Power Science Research Institute of Guangxi Power Grid Co., Ltd.

College of Electrical Engineering, Shanghai University of Electric Power

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