绝缘材料
絕緣材料
절연재료
INSULATING MATERIALS
2015年
5期
69-72
,共4页
李妍%王庭华%朱立位%胡国伟%邹盛
李妍%王庭華%硃立位%鬍國偉%鄒盛
리연%왕정화%주립위%호국위%추성
相对测量法%介质损耗%故障定位
相對測量法%介質損耗%故障定位
상대측량법%개질손모%고장정위
relative measurement method%dielectric loss%fault location
在容性设备绝缘在线监测中以PT二次电压信号作为相位参考存在不足，为了准确监测设备的绝缘状态，基于相对介损测量法，利用3δ准则通过相对介损历史监测数据来确定介损的正常变化范围，然后根据相对介损值变化向量确定故障台数，进而由故障诊断矩阵对单台或多台故障设备进行准确定位。最后通过实验室人工模拟实验验证了本方法的有效性。
在容性設備絕緣在線鑑測中以PT二次電壓信號作為相位參攷存在不足，為瞭準確鑑測設備的絕緣狀態，基于相對介損測量法，利用3δ準則通過相對介損歷史鑑測數據來確定介損的正常變化範圍，然後根據相對介損值變化嚮量確定故障檯數，進而由故障診斷矩陣對單檯或多檯故障設備進行準確定位。最後通過實驗室人工模擬實驗驗證瞭本方法的有效性。
재용성설비절연재선감측중이PT이차전압신호작위상위삼고존재불족，위료준학감측설비적절연상태，기우상대개손측량법，이용3δ준칙통과상대개손역사감측수거래학정개손적정상변화범위，연후근거상대개손치변화향량학정고장태수，진이유고장진단구진대단태혹다태고장설비진행준학정위。최후통과실험실인공모의실험험증료본방법적유효성。
In view of the deficiency when using PT secondary voltage signal as phase reference in online monitoring of capacitive equipment insulation and to monitor the insulation condition of equipment precisely, based on the relative measurement method, we determined the normal variation range of dielectric loss factor by historical monitoring data using 3δ criterion. The number of failure equipments was determined according to the change vector of dielectric loss factor, and then single or multiple faulure equipments were located precisely by fault diagnosis matrix. Finally, the effectiveness of the method was verified by artificial simulation experiment in laboratory.
