Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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断路器防跳原理分析与故障回路改造

来源:电工电气发布时间:2018-05-09 13:09 浏览次数:555
断路器防跳原理分析与故障回路改造
 
李鹏,胡峰,钟著辉,袁文
(常德供电公司,湖南 常德 415000)
 
    摘 要:断路器防跳回路能有效避免在永久性故障情况下多次合闸于故障线路。阐明了断路器发生“跳跃”的原因,分析了保护操作箱防跳及断路器机构防跳回路工作原理,针对某110 kV扩建线路间隔保护验收中发现的断路器远方合闸不能实现防跳的故障,对其防跳回路进行重点分析,并提出该断路器机构防跳回路改造方法,改造后进行了多次防跳试验,断路器远方合闸和就地合闸均能实现防跳功能,保证了断路器的运行安全可靠。
    关键词:断路器;防跳;永久性故障;工作原理;回路改造
    中图分类号:TM561     文献标识码:B     文章编号:1007-3175(2018)05-0051-03
 
Principle Analysis of Circuit Breaker Anti-Jump and Reconstruction of Fault Circuit
 
LI Peng, HU Feng, ZHONG Zhu-hui, YUAN Wen
(Changde Power Supply Company, Changde 415000, China)
 
    Abstract: Circuit breaker anti-jump circuits can effectively avoid multiple closing the fault line in the case of permanent failure. This paper expounded the reason of circuit-breaker "jumping" and analyzed the working principle of the protection operation box anti-jump and the circuit-breaker mechanism anti-jump circuit. Aiming at the faults that the remote closing of circuit breakers couldn’t realize anti-jump during an 11 0 kV expansion line interval protection check before acceptance, this paper carried out selective analysis and proposed a reformed mechanism anti-jump circuit method. After the transformation, a number of anti-jump tests were conducted. The circuit breaker can achieve anti-jump function when circuit breaker remote closing or local closing, which ensures the safe and reliable operation of the circuit breaker.
    Key words: circuit breaker; anti-jump; permanent failure; working principle; reconstruction circuit
 
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