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

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一起斷路器防跳回路缺陷案例的分析及改進(jìn)方法

來源:電工電氣發(fā)布時(shí)間:2021-04-30 13:30 瀏覽次數(shù):677

一起斷路器防跳回路缺陷案例的分析及改進(jìn)方法

高遠(yuǎn),劉懷宇,趙睿
(國(guó)網(wǎng)江蘇省電力有限公司檢修分公司,江蘇 南京 211100)

 

    摘 要:防跳回路在斷路器操作回路中意義重大,能有效防止斷路器發(fā)生“跳躍”對(duì)斷路器本身和電網(wǎng)造成的巨大沖擊。針對(duì)某新建變電站驗(yàn)收時(shí)發(fā)現(xiàn)的防跳試驗(yàn)后斷路器不能再次進(jìn)行手動(dòng)合閘的問題,闡述了斷路器本體機(jī)構(gòu)防跳和操繼箱防跳兩種方式的原理,分析了該起斷路器防跳回路缺陷的原因,給出了一種在現(xiàn)場(chǎng)缺少多余防跳繼電器輔助接點(diǎn)情況下,消除防跳回路寄生回路的改進(jìn)方法,現(xiàn)場(chǎng)試驗(yàn)驗(yàn)證了該方法的有效性。
    關(guān)鍵詞:斷路器;防跳回路;缺陷處理
    中圖分類號(hào):TM561     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2021)04-0034-04
 
Analysis and Improvement Method for Leap-Preventive
Circuit Defect of Breaker
 
GAO Yuan, LIU Huai-yu, ZHAO Rui
(State Grid Jiangsu Electric Power Co., Ltd. Maintenance Branch Company, Nanjing 211100, China)
 
    Abstract: The leap-preventive circuit is of great significance in the operation circuit of breaker, and can effectively prevent the breaker from “leaping” which may cause a huge impact on the breaker itself and the power grid. According to the found problem during acceptance of a new substation that breaker cannot be manually closed again after leap-preventive test, this paper expounds the principles of leap-preventivecircuit in body mechanism and operating box, analyzes the cause of the leap-preventive circuit defect, and presents an improved method to eliminate the parasitic loop of leap-preventive circuit in the absence of auxiliary nodes of redundant leap-preventive relays. The effectiveness of the method is verified on site.
    Key words: breaker; leap-preventive circuit; defect handling
 
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