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

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    發(fā)電機裂相橫差保護報警分析與處理

    來源:電工電氣發(fā)布時間:2020-12-19 10:19 瀏覽次數(shù):798
    發(fā)電機裂相橫差保護報警分析與處理
     
    陳熙平,張杰,張強
    (雅礱江流域水電開發(fā)有限公司,四川 成都 610056)
     
        摘 要:介紹了發(fā)電機裂相橫差保護報警現(xiàn)場檢查方法,分析了裂相橫差保護報警原因,確認報警原因為發(fā)電機中性點電流互感器(CT)故障。對CT故障原因進行分析可知,是運行環(huán)境溫度長期過高,CT絕緣等級不夠,且設備本身存在質(zhì)量問題等因素造成。對該故障提出了現(xiàn)場改善措施,運行實踐表明,該改善措施效果明顯。
        關鍵詞:中性點電流互感器(CT);裂相橫差;保護報警;故障
        中圖分類號:TM312;TM452     文獻標識碼:B     文章編號:1007-3175(2020)12-0039-04
     
    Analysis and Treatment of Generator Split-Phase Transverse Differential Protection Alarm
     
    CHEN Xi-ping, ZHANG Jie, ZHANG Qiang
    (Yalong River Hydropower Development Co.,Ltd, Chengdu 610056, China)
     
        Abstract: This paper introduces the on-site inspection method of the generator split-phase transverse differential protection alarm, analyzes the cause of the alarm, and confirms that the cause of the alarm is the generator neutral current transformer (CT) fault. By analyzing the causes of CT fault, the operating environment temperature is too high for a long time, the CT insulation class is low, and the equipment itself has quality problems. The field improvement measures are put forward for the fault, and the operation practice shows that the improvement measures are effective.
        Key words: neutral current transformer; split-phase transverse differential; protection alarm; fault
     
    參考文獻
    [1] 黃勇,周有慶,彭紅海,等. 電流互感器變比測量方法的研究[J]. 變壓器,2002,39(11):31-33.
    [2] 姚春球. 發(fā)電廠電氣部分[M]. 北京:中國電力出版社,2007.
    [3] 中華人民共和國電力工業(yè)部安全監(jiān)察及生產(chǎn)協(xié)調(diào)司,國家電力調(diào)度通信中心. 電力設備預防性試驗規(guī)程:DL/T 596—1996[S]. 北京:中國電力出版社,1996:13.
    [4] 中國電力企業(yè)聯(lián)合會. 電氣裝置安裝工程 電氣設備交接試驗標準:GB 50150—2006[S]. 北京:中國計劃出版社,2006:33.

     

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