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    Suzhou Electric Appliance Research Institute
    期刊號: 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方法

    來源:電工電氣發(fā)布時間:2021-04-30 13:30 瀏覽次數(shù):726

    一起斷路器防跳回路缺陷案例的分析及改進方法

    高遠,劉懷宇,趙睿
    (國網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”對斷路器本身和電網造成的巨大沖擊。針對某新建變電站驗收時發(fā)現(xiàn)的防跳試驗后斷路器不能再次進行手動合閘的問題,闡述了斷路器本體機構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)場缺少多余防跳繼電器輔助接點情況下,消除防跳回路寄生回路的改進方法,現(xiàn)場試驗驗證了該方法的有效性。
        關鍵詞:斷路器;防跳回路;缺陷處理
        中圖分類號:TM561     文獻標識碼:B     文章編號: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
     
    參考文獻
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    [2] 兀鵬越,董志成,陳琨,等. 高壓斷路器防跳回路的應用及問題探討[J] . 電力自動化設備,2010,30(10) :106-109.
    [3] 陳剛,盧松城,紀青春.220 kV 斷路器防跳回路中異常問題分析及處理[J] . 電力系統(tǒng)保護與控制,2009,37(23) :185-186.
    [4] 龍啟峰. 一起斷路器防跳回路異常的分析與改進[J]. 陜西電力,2015,43(5) :85-87.
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    [6] 劉永興. 斷路器操作回路中防跳繼電器靈敏度的選擇[J]. 電力系統(tǒng)保護與控制,2009,37(9) :116-119.
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