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

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斷路器防跳原理分析與故障回路改造

來源:電工電氣發(fā)布時間:2018-05-09 13:09 瀏覽次數(shù):675
斷路器防跳原理分析與故障回路改造
 
李鵬,胡峰,鐘著輝,袁文
(常德供電公司,湖南 常德 415000)
 
    摘 要:斷路器防跳回路能有效避免在永久性故障情況下多次合閘于故障線路。闡明了斷路器發(fā)生“跳躍”的原因,分析了保護操作箱防跳及斷路器機構防跳回路工作原理,針對某110 kV擴建線路間隔保護驗收中發(fā)現(xiàn)的斷路器遠方合閘不能實現(xiàn)防跳的故障,對其防跳回路進行重點分析,并提出該斷路器機構防跳回路改造方法,改造后進行了多次防跳試驗,斷路器遠方合閘和就地合閘均能實現(xiàn)防跳功能,保證了斷路器的運行安全可靠。
    關鍵詞:斷路器;防跳;永久性故障;工作原理;回路改造
    中圖分類號:TM561     文獻標識碼:B     文章編號: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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