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《Power System Technology》 2006-19
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Analysis on Measured and Calculated Results of Artificial Single Phase Grounding Test in 750 kV Transmission Pilot Project

JIANG Wei-ping1,ZHU Yi-ying1,WU Ya-ni1,ZENG Zhao-hua1,Lü Peng-fei1,BAN Lian-geng1,ZHU Jiao-xin2,HAN Ti2,LU Jiang-ping3(1.China Electric Power Research Institute,Haidian District,Beijing 100085,China;2.Northwest China Grid Company Limited,Xi'an 710048,Shaanxi Province,China;3.Shaanxi Electric Power Research Institute,Xi'an 710054,Shaanxi Province,China)  
The testing method for artificial single phase grounding test of 750 kV transmission line from Guanting to Lanzhoudong belonging to 750 kV transmission pilot project of State Grid Corporation of China is briefly presented.The reasons leading to the difference between measured values of power frequency parameters of 750 kV transmission line and theoretical calculated values of these parameters are analyzed.Based on the comparison of measured valued of short circuit current,secondary arc current and recovery voltage with these values forecasted by simulation before the test,the reason causing the deviation is researched and by use of Electromagnetic Transients Program-Restructured Version(EMTP-RV)the results of artificial single phase grounding test are reproduced.Finally,the values of secondary arc current and recovery voltage of 750 kV transmission line on different operation mode and different transmission line compensation are forecasted,suggestions relevant to operation and design of 750kV transmission system are proposed.
【CateGory Index】: TM862
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