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《Journal of Electric Power Science and Technology》 2007-04
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Research on multi-phase compensate impedance component of protection relaying

MU Da-qing1,HU Liang2(1.College of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410076,China;2.Yongxing Hydraulic and Electric Co.,Ltd,Chenzhou 423300,China)  
The principle and characteristics of multi-phase compensate impedance component in power line distance protection are analyzed in the paper.Two criterions of multi-phase compensate impedance component are presented.Simulation analysis results show that the multi-phase compensate impedance component can distinguish outside faults and inside faults of the protected line correctly and it is affected very slightly by fault resistance.
【Fund】: 湖南省教育厅科技项目(06c117)
【CateGory Index】: TM772
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