宁夏电力
寧夏電力
저하전력
NINGXIA ELECTRIC POWER
2013年
2期
16-20
,共5页
电容式电压互感器%自激法%分流支路
電容式電壓互感器%自激法%分流支路
전용식전압호감기%자격법%분류지로
capacitor voltage transformer(CVT)%self-excitation method%shunt circuit
针对青铜峡变电站330 kV母线电容式电压互感器(Capacitive Voltage Transformer, CVT)自激法测试过程中出现的问题,对异常数据进行了详细分析,逐一排除了试验仪器、测试方法及运行情况等因素对试验结果造成影响的可能性,并通过理论计算和现场复测结果的对比,验证了分析过程.结果表明:引起测试数据异常的主要原因是接地刀闸未完全拉开,形成分流回路.因此,在电容式电压互感器测量前,应仔细检查与CVT相连接的其他设备是否有接地刀闸触头虚接、接地线未拆除等情况,避免测试过程中引入分流支路,干扰测试结果判定.
針對青銅峽變電站330 kV母線電容式電壓互感器(Capacitive Voltage Transformer, CVT)自激法測試過程中齣現的問題,對異常數據進行瞭詳細分析,逐一排除瞭試驗儀器、測試方法及運行情況等因素對試驗結果造成影響的可能性,併通過理論計算和現場複測結果的對比,驗證瞭分析過程.結果錶明:引起測試數據異常的主要原因是接地刀閘未完全拉開,形成分流迴路.因此,在電容式電壓互感器測量前,應仔細檢查與CVT相連接的其他設備是否有接地刀閘觸頭虛接、接地線未拆除等情況,避免測試過程中引入分流支路,榦擾測試結果判定.
침대청동협변전참330 kV모선전용식전압호감기(Capacitive Voltage Transformer, CVT)자격법측시과정중출현적문제,대이상수거진행료상세분석,축일배제료시험의기、측시방법급운행정황등인소대시험결과조성영향적가능성,병통과이론계산화현장복측결과적대비,험증료분석과정.결과표명:인기측시수거이상적주요원인시접지도갑미완전랍개,형성분류회로.인차,재전용식전압호감기측량전,응자세검사여CVT상련접적기타설비시부유접지도갑촉두허접、접지선미탁제등정황,피면측시과정중인입분류지로,간우측시결과판정.
Aiming at the problems of self-excitation method test of 330 kV capacitive voltage trans?former (CVT) in Qingtongxia Substation, analyzes in detail the abnormal data, one by one excludes the probability of influence of the factors such as experimental appliances, test method and operation sta?tus on the test results. By comparing the result of theoretical calculation and the locale retest, verifies the analysis process. The result shows the earthing blade not to pull out fully and to come into being shunt circuit is the main reason of test data abnormality. So before measuring CVT, must carefully check the equipments connected with CVT whether have the phenomenon of the contacts of earthing blade virtual connection and earthing wire not to be dismantled, avoids bringing shunt circuit in test process to disturb the judgment of the test results.
