内蒙古电力技术Issue(1)：26-29,4.DOI:10.3969/j.issn.1008-6218.2015.01.007
变电站500 kV避雷器故障原因分析及预防措施
Cause Analysis and Preventive Measures of Substation 500 kV Surge Arrester Failure
郭秉义 1杨文惠 1赵勇 1徐霞1
作者信息
- 1. 巴彦淖尔电业局，内蒙古 巴彦淖尔 015000
- 折叠
摘要
Abstract
A Wphase surge arrestor exploded in some 500 kV substation in Bayannuur. The result of the experimental data of surge arrester, fault recorded graphics and transmission lines detailed health examination comes about that the failure is due to lightning strikes on the line, which resulted in W-phase of 5051 and 5052 circuit breaker trip. Before the short time from 497.4 ms to 597.4 ms of the 5051 W-phase reclose, line L3 suffered long time from lightning strike overvoltage, which caused the surge arrester destoried. The author put forward to carry out arrester electrified testing carefully, strengthen the inspection of surge arrester, and strengthen the fault section monitoring to prevent the similar fault.关键词
500 kV避雷器/均压环/电阻片/均压电容/工频电压耐受时间Key words
500 kV surge arrester/voltage grading ring/resistance card/equivalent capacity/power-frequency voltage tolerance time分类
信息技术与安全科学引用本文复制引用
郭秉义,杨文惠,赵勇,徐霞..变电站500 kV避雷器故障原因分析及预防措施[J].内蒙古电力技术,2015,(1):26-29,4.
