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- In normal conditions, there are two causes of maloperation of zero sequence directional protection, i.e, a fault from the device itself and wrong wiring outside the device. 而造成零序方向保护误动的原因无非两种，其一是由于装置本身故障引起的；其二则是由于装置外部接线错误造成的。
- zero sequence current directional protection 零序电流定向保护装置
- negative sequence directional protection 负序方向保护
- zero-sequence directional protection 零序方向保护
- The principle of directional protective relaying based on wavelet transform for detection of fault information and amplitude com parison of travelling wave is presented. 以小波变换为工具提取故障后的行波信息,并通过小波变换实现行波幅值比较式方向保护。
- YUE Quan-ming,GU Yong-peng,LU Fei-peng.GA based determination of minimum break point set for optional coordination of directional protective relay in a multiloop network[J].Relay,2002,30(8) :23 -26. [6]乐全明;顾永朋;吕飞鹏.;基于GA的环网方向保护配合最小断点集的计算[J]
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- ConclusionThe results suggest that YLS possesses direct protective action on primary hepatocyte injury induced by H2O2.This might be associated with the anti-oxidative activity of YLS. 结论提示YLS对大鼠原代培养肝细胞损伤有直接保护作用，该作用可能与其抗氧化作用有关。
- He has chosen the most direct route. 他选取了最直的路线。
- She's very direct, believes in speaking her mind. 她为人直率，喜欢有什么说什么。
- Can you direct me to the shoe department? 请告诉我卖鞋部在哪里。
- Be there a direct train for Beijing to Nanning? 从北京到南宁有直达车吗？
- Having no particular directional characteristics. 无定向的具有无特定方向的特征
- See that direct heat does not play on it. 当心别让它直接受热。
- It's a long way by road the train is more direct. 走公路很远--乘火车近。
- Would you please direct me to the zoo? 请问去动物园怎么走?
- My eyes were blinded by the direct rays of light. 在光线的直射下，我看不清楚东西。
- Her opinions are the direct opposite of mine. 她的意见与我的截然相反。
- transverse differential current direction protection 横联差动电流方向保护
