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

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    短路電流非周期分量及其在繼電保護中的應用

    來源:電工電氣發布時間:2016-04-06 15:06 瀏覽次數:14

    短路電流非周期分量及其在繼電保護中的應用 

    馮建勤,黃思芳,宋海龍 
    鄭州輕工業學院 電氣信息工程學院,河南 鄭州 450002 
     

    摘 要:為準確判斷電力系統短路故障,提出了一種利用短路電流中的非周期分量作為短路故障的判據。通過相量分析和仿真分析,研究了短路電流中的非周期分量。利用Matlab仿真軟件提取短路電流中的非周期分量,得出了短路電流中非周期分量的特點。利用這些特點將非周期分量法運用到繼電保護中去,既可單獨作為線路的主保護,也可與其它保護相結合,運行結果表明,運用此法可準確判斷電力系統短路故障。
    關鍵詞:短路電流;非周期分量;光電流互感器;繼電保護
    中圖分類號:TM771 文獻標識碼:B 文章編號:1007-3175(2014)12-0035-04


    Short-Circuit Current Aperiodic Components and Their Application in Relay Protection 

    FENG Jian-qin, HUANG Si-fang, SONG Hai-long 
    College of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China 
     

    Abstract:In order to accurately determine the short-circuit fault in power system, this paper proposed to use the aperiodic components in short-circuit current as a criterion in short-circuit faults and studied the aperiodic components in short-circuit current by phasor and simulation analysis. The aperiodic components in short-circuit current were simulated and extracted in Matlab to obtain the characteristics of the aperiodic components in the short-circuit current, so that the aperiodic components method was applied in the relay protection, either as a primary protection circuit alone, or as the combination with other protection circuit. The results show that this method can accurately judge the short-circuit faults of the power system.
                    Key words:short-circuit current; aperiodic components; optical current transducer; relay protection


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