Fault of Oil Leakage and Improvement Measures of Grading Capacitor for 500 kV Circuit Breaker

LI Weiguo; ZHANG Changhong; YANG Xu; ZHAO Guodong; CHU Jinwei; HUANG Zhongkang

doi:10.14044/j.1674-1757.pcrpc.2020.02.010

您当前的位置：

首页 >

文章列表页 >

Fault of Oil Leakage and Improvement Measures of Grading Capacitor for 500 kV Circuit Breaker

更新时间：2024-09-14

- Fault of Oil Leakage and Improvement Measures of Grading Capacitor for 500 kV Circuit Breaker
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 2, Pages: 53-58(2020)
- 作者机构：
  
  1. 中国南方电网超高压输电公司检修试验中心
  2. 华南理工大学电力学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.02.010
  CLC： TM53;TM561
- Published：2020，
- 稿件说明：
移动端阅览
[1]黎卫国,张长虹,杨旭,赵国栋,楚金伟,黄忠康.500 kV断路器用均压电容器渗漏油故障分析及改进措施[J].电力电容器与无功补偿,2020,41(02):53-58.

LI WEIGUO, ZHANG CHANGHONG, YANG XU, et al. Fault of Oil Leakage and Improvement Measures of Grading Capacitor for 500 kV Circuit Breaker. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 53-58.
[1]黎卫国,张长虹,杨旭,赵国栋,楚金伟,黄忠康.500 kV断路器用均压电容器渗漏油故障分析及改进措施[J].电力电容器与无功补偿,2020,41(02):53-58. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.010.

LI WEIGUO, ZHANG CHANGHONG, YANG XU, et al. Fault of Oil Leakage and Improvement Measures of Grading Capacitor for 500 kV Circuit Breaker. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 53-58. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.010.

摘要

为了查明500 kV断路器用均压电容器渗漏油故障的原因

对故障均压电容器进行了连接部位电位差计算、密封圈性能检测、均压电容器电场仿真计算、密封端板材质检测等研究。结果表明:均压电容器端板连接部位电位差约为13.78 V

均压电容器端板故障处附近区域最大场强为2.74 kV/cm

均压电容器渗漏油的根本原因为密封端板密封面出现电化学腐蚀现象。针对故障原因提出有效整改措施:端板密封槽由台阶式改为U型槽

端板材质从LY12铝棒改为6061铝棒

阳极氧化膜厚提高到AA15等级。经整改优化后的均压电容器投运1年来未再出现漏油现象。

Abstract

In order to find out the cause of oil leakage of grading capacitor for 500 kV circuit breaker grading capacitor

the potential difference of the connection position of grading capacitor

performance detection of sealing ring

electrical field simulation calculation if grading capacitor and material detection of sealing end plate are performed.It is shown by the result that the potential difference at the connection position of the grading capacitor end plate is about 13.78 V

the maximum field strength at the area of fault position of end cover of grading capacitor is 2.74 kV/cm.The fundamental reason of oil leakage of grading capacitor is the electrochemical corrosion on the sealing surface of the sealing end plate.In view of the reason of the fault

the effective rectification measures are proposed.The sealing groove is changed from step into U shape and the material of the end plate is changed from LY12 aluminum bar into 6061 aluminum bar and the thickness of anode oxidation is improved to grade AA15.The grading capacitor after rectification has no oil leakage any more since 1-year operation.

关键词

500 kV断路器均压电容器渗漏油故障分析改进措施

Keywords

500 kV circuit breakergrading capacitoroil leakagefault analysisimprovement measures

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study and Discussion on Abnormal Phenomenon of 10kV Dielectric Loss of Grading Capacitor for 500 kV Circuit Breaker

The Secondary Circuit Voltage Analysis and Test Method for the Fault of Losing of CVT in Service

Development and Improvement of Assembling Capacitor

Fault Analysis and Modeling Simulation on 35 kV Shunt Capacitor

The Fault Analysis and Improvement Suggestion on DC Filter Capacitor at Converter Station of TSQ

Related Author

YAO Congwei

LI Ying

PANG Xiaofeng

LYU Hong

WANG Zengbin

JIN Yuhui

CAI Linglong

SU Sheng-xin 1

Related Institution

Electric Power Research Institute,Guangdong Power Grid Co.,Ltd.

Guangdong Key Laboratory of Electric Power Equipment Reliability

山东255032

ShandongZibo Electric Power Administration

Central China Science and Technology University

⁰