Analysis of a Broken on the Charge Shaft of Spring Operating Mechanism for 500 kV Circuit Breaker

JIAO Zonghan; ZHENG Xin; YANG Yingchun; DAI Keshun

doi:10.13296/j.1001-1609.hva.2021.11.030

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Analysis of a Broken on the Charge Shaft of Spring Operating Mechanism for 500 kV Circuit Breaker

更新时间：2025-04-26

- Analysis of a Broken on the Charge Shaft of Spring Operating Mechanism for 500 kV Circuit Breaker
- High VoltageApparatus Vol. 57, Issue 11, Pages: 227-231(2021)
- 作者机构：
  
  云南电网有限责任公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.11.030
  CLC： TM561
- Published：2021
- 稿件说明：
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JIAO Zonghan, ZHENG Xin, YANG Yingchun, et al. Analysis of a Broken on the Charge Shaft of Spring Operating Mechanism for 500 kV Circuit Breaker[J]. High voltageapparatus, 2021, 57(11): 227-231.
DOI：

JIAO Zonghan, ZHENG Xin, YANG Yingchun, et al. Analysis of a Broken on the Charge Shaft of Spring Operating Mechanism for 500 kV Circuit Breaker[J]. High voltageapparatus, 2021, 57(11): 227-231. DOI： 10.13296/j.1001-1609.hva.2021.11.030.

摘要

针对一起500 kV断路器弹簧机构储能过程中储能轴断裂事故

对断裂部件进行了理化检验

明确了储能轴断裂并非该部件的质量原因。通过对断路器解体

分析断路器储能过程机构的工作原理

发现储能凸轮和顶杆啮合不足

导致合闸弹簧在无负载的情况下带动储能轴"反打"

是造成储能轴断裂的原因。

Abstract

In view of breakage of the charge shaft of the spring operating mechanism for 500 k V circuit breaker during the charging period

the physical and chemical inspection on the breakage part is performed and it is confirmed that the breakage of the shaft is not due to the quality of the part. It is found throughout disassembly of the circuit breaker and analysis of the operating principle of the operating mechanism of the circuit breaker during the charging period that insufficient engagement between the cam and the top lever causes the closing spring to drive the charge shaft to“turnback”under the no load condition

which is the cause of the breakage of the charge shaft.

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