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

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    雷擊造成的線路短路點識別和定位方法

    來源:電工電氣發布時間:2016-04-05 16:05 瀏覽次數:808

    雷擊造成的線路短路點識別和定位方法 

    韓志錕 
    江蘇省電力設計院,江蘇 南京 211102 
     

    摘 要: 雷擊造成線路故障后,故障點的及時識別和定位有利于電力系統穩定運行。對故障性雷擊進行仿真,根據故障行波的特點提出判斷故障點與雷擊點位置異同的方法。并提出利用相關分析法處理故障行波,根據相關法的定義得到相關峰含義,推導得出測距公式,利用測距公式,對仿真模型進行故障測距。測距結果驗證表明,該方法對近距離復雜波頭的識別準確有效,可有效進行故障性雷擊的故障測距。
    關鍵詞: 雷擊;輸電線路;故障測距;相關分析法;相關峰
    中圖分類號:TM855 文獻標識碼:A 文章編號:1007-3175(2013)11-0010-05


    Identifying and Positioning of Line Short Circuit PointCaused by Lightning Stroke 

    HAN Zhi-kun 
    Jiangsu Electric Power Design Institute, Nanjing 211102, China 
     

    Abstract: After line fault caused by lightning stroke, in-time identifying and positioning of fault point is favorable for stable operation of power system. This paper carried out simulation for fault lightning stroke point. According to the features of fault waves, a method to judge the difference between fault point and lightning stroke point was raised and the correlation analysis method was proposed to deal with fault travelling wave. According to the definition of correlation, the correlation peak definition was obtained, thus to derive distance measuring formula. The formula was used to carry fault distance measurement for simulation model. The result of distance measurement shows that the method is correct and valid for the identification of short distance complicated peak wave head identification, can effectively carry out fault distance measurement of lightning stroke.
               Key words: lightning stroke; transmission line; fault distance measurement; correlation analysis; correlation peak


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