Analysis and Suggestion on the Running Condition and Insulation Base Defect of ±500 kV MOA of Transmission Line

CHAO Yafeng; PENG Xiang; NIE Huihui; CHENG Ping; LI Xiongjie

doi:10.13296/j.1001-1609.hva.2017.07.030

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Analysis and Suggestion on the Running Condition and Insulation Base Defect of ±500 kV MOA of Transmission Line

更新时间：2025-04-26

- Analysis and Suggestion on the Running Condition and Insulation Base Defect of ±500 kV MOA of Transmission Line
- High VoltageApparatus Vol. 53, Issue 7, Pages: 187-191(2017)
- 作者机构：
  
  1. 国网湖南省电力公司电力科学研究院
  2. 国网湖南省电力公司永州供电分公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.07.030
  CLC： TM862
- Published：2017
- 稿件说明：
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[1]巢亚锋,彭详,聂辉辉,陈平,李雄杰.±500 kV线路避雷器运行情况及其绝缘底座缺陷分析与建议[J].高压电器,2017,53(07):187-191.

CHAO Yafeng, PENG Xiang, NIE Huihui, et al. Analysis and Suggestion on the Running Condition and Insulation Base Defect of ±500 kV MOA of Transmission Line[J]. High voltageapparatus, 2017, 53(7): 187-191.
[1]巢亚锋,彭详,聂辉辉,陈平,李雄杰.±500 kV线路避雷器运行情况及其绝缘底座缺陷分析与建议[J].高压电器,2017,53(07):187-191. DOI： 10.13296/j.1001-1609.hva.2017.07.030.

CHAO Yafeng, PENG Xiang, NIE Huihui, et al. Analysis and Suggestion on the Running Condition and Insulation Base Defect of ±500 kV MOA of Transmission Line[J]. High voltageapparatus, 2017, 53(7): 187-191. DOI： 10.13296/j.1001-1609.hva.2017.07.030.

摘要

直流线路避雷器于2013年首次应用中国输电线路

为了解其运行状况及运行过程中存在的问题

笔者跟踪了某直流±500 k V输电线路试运行线路避雷器的运行情况

发现自安装直流避雷器后

该线路雷击故障明显下降

然而大多数避雷器计数器却并未动作。对该线路在运直流避雷器进行了现场抽样检测

结果表明:仅1个计数器存在缺陷

现场抽测的13基避雷器底座绝缘电阻值下降明显。分析认为

避雷器绝缘底座绝缘性能过低可能是计数器未正常动作的原因之一

而绝缘部件老化、外部积污及绝缘瓷件损坏均可导致缘底座绝缘性能急剧下降。提出了将瓷质绝缘底座更换材质或在瓷套外加装柔性绝缘护套来减小外界对绝缘件本体的压强

及统一避雷器底座绝缘电阻值判断标准的建议。

Abstract

As a new technique

DC MOA of transmission line is first applied on the transmission line in 2013.In order to study the running conditions and the existential questions in the running process of the DC MOA

the running condition of the trial operation of DC MOA on DC ±500 k V transmission line is tracking studied

the running condition shown that the lightning faults of the DC ±500 k V transmission line decreased significantly after the DC MOA installed

but the majority of DC MOA counter has no action. The field sampling detection of the DC MOA is carried out by the authors

the test results shown that only one DC MOA counter existing defects

and the insulation resistance of the insulation base decreased significantly. The author holds that the low insulation of the insulation base maybe one of the reasons for the no action of the counters

insulating components aging and contamination accumulation and insulated porcelain damaged and other reasons all can result in insulation resistance decreased significantly. The suggestions of add a flexibility insulating sheath to the porcelain insulation base or changing the insulation base material are proposed

and the criterion of the insulation resistance for the MOA insulation base should unified is also proposed in the paper.

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