Analysis on an Accident of Insulated Pull Rod of 550 kV Porcelain Column Circuit Breaker

WANG Dong; XIE Wei; FU Haijin; HUANG Xingquan

doi:10.13296/j.1001-1609.hva.2015.09.030

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Analysis on an Accident of Insulated Pull Rod of 550 kV Porcelain Column Circuit Breaker

更新时间：2025-04-26

- Analysis on an Accident of Insulated Pull Rod of 550 kV Porcelain Column Circuit Breaker
- High VoltageApparatus Vol. 51, Issue 9, Pages: 177-181(2015)
- 作者机构：
  
  国网河南省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.09.030
  CLC： TM561
- Published：2015
- 稿件说明：
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[1]王栋,谢伟,付海金,黄兴泉.一起550kV瓷柱式断路器绝缘拉杆的事故及分析[J].高压电器,2015,51(09):177-181.

WANG Dong, XIE Wei, FU Haijin, et al. Analysis on an Accident of Insulated Pull Rod of 550 kV Porcelain Column Circuit Breaker[J]. High voltageapparatus, 2015, 51(9): 177-181.
[1]王栋,谢伟,付海金,黄兴泉.一起550kV瓷柱式断路器绝缘拉杆的事故及分析[J].高压电器,2015,51(09):177-181. DOI： 10.13296/j.1001-1609.hva.2015.09.030.

WANG Dong, XIE Wei, FU Haijin, et al. Analysis on an Accident of Insulated Pull Rod of 550 kV Porcelain Column Circuit Breaker[J]. High voltageapparatus, 2015, 51(9): 177-181. DOI： 10.13296/j.1001-1609.hva.2015.09.030.

摘要

介绍了一起550 kV瓷柱式断路器绝缘拉杆事故。通过现场一、二次设备的详细检查

故障后试验和返厂试验

以及对该主绝缘事故的缜密分析

发现造成该事故的主要原因为该断路器B相绝缘拉杆存在绝缘缺陷

由此引发局部放电并逐渐造成绝缘劣化

最终导致故障发生。进一步加快推进绝缘拉杆中存在气隙及气隙数量、大小的检测、判断标准的制定和实施十分必要。

Abstract

An accident of an insulated tension pole of 550 kV porcelain column circuit breaker is introduced. After the accident

the primary and secondary equipments were checked

and tests both on site and in the manufacturing company were conducted for the circuit breaker to analyze the accident. It was found that the insulation defect of B-phase insulated pull rod resulted in partial discharge to gradually degrade the insulation of the circuit breaker

eventually leading to this accident. Therefore

it is necessary to draw up standard and put in practice for detection and judgment of number and size of air gap in insulated pull rod of a circuit breaker.

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