Analysis on a Fault of Metal Oxide Surge Arrester

doi:10.13296/j.1001-1609.hva.2014.11.024

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Analysis on a Fault of Metal Oxide Surge Arrester

更新时间：2025-04-26

- Analysis on a Fault of Metal Oxide Surge Arrester
- High VoltageApparatus Vol. 50, Issue 11, Pages: 139-144(2014)
- 作者机构：
  
  江苏省电力公司电力科学研究院(国家电网公司实验室)
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.11.024
  CLC： TM862
- Published：2014
- 稿件说明：
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[1]马勇,刘洋,谢天喜,周志成,陈光,陈大兵,陶风波.一起氧化锌避雷器故障原因分析与思考[J].高压电器,2014,50(11):139-144.

Analysis on a Fault of Metal Oxide Surge Arrester[J]. High voltageapparatus, 2014, 50(11): 139-144.
[1]马勇,刘洋,谢天喜,周志成,陈光,陈大兵,陶风波.一起氧化锌避雷器故障原因分析与思考[J].高压电器,2014,50(11):139-144. DOI： 10.13296/j.1001-1609.hva.2014.11.024.

Analysis on a Fault of Metal Oxide Surge Arrester[J]. High voltageapparatus, 2014, 50(11): 139-144. DOI： 10.13296/j.1001-1609.hva.2014.11.024.

摘要

对一起110 kV氧化锌避雷器故障进行了分析。对避雷器进行外观检查、解体分析

对电阻片测量绝缘釉厚度以及10 k A冲击电流试验

对电阻片柱电位分布开展有限元仿真分析和实际测量

发现故障是由于该结构避雷器底部金属支撑杆较长

吸潮硅胶绑缚位置较高

吸附装配中残余潮气后对瓷套放电引起。针对此次故障提出了加强避雷器结构设计选型、加强避雷器工艺管控和加强在役设备巡检等3点改进措施

以提高避雷器的运行可靠性。

Abstract

A fault of the 110 kV metal oxide surge arrester was analyzed. The arrester was checked via visual inspection and disassembling analysis. The insulation layer thickness of the resistor sheet was measured

and a 10 kV current impulse test was conducted. The potential distribution of the arrester was obtained through optical fiber-current measurement and simulation with finite element method. It is found that the fault is due to the discharge of damp drying bag because the metal strut is too long and the drying bag is in higher position. Accordingly

three suggestions are offered to improve operation and maintenance of the arrester

including proper selection of arrester type

improvement of product specification and quality control

and sufficient inspection and detection.

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