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《Electric Engineering》 2018-15
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Measuring Technology and Application of Frequency Parameter of UHV Double-circuit Transmission Line on the Same Tower

YAN Libing;WANG Shaohua;LI Te;WU Zundong;School of Electrical and Automation Engineering of Nanjing Normal University;State Grid Zhejiang Electric Power Research Institute;State Grid Jinhua Power Supply Company;  
Distribution of transmission lines neighboring Wannan-Zhebei part of 1000 kV Anhui-to-East ultra high voltage(UHV)power transmission lines was surveyed.The key technology of frequency parameter measurement of UHV transmission line was analyzed.The technical method of frequency parameter measurement of Wannan-Zhebei UHV transmission line was proposed.Based on theoretical values of frequency parameters of UHV transmission line,the calculations for field tests was prepared,and the test equipment preparation was recommended.Results showed that,due to the influence of interfering voltage,during the period of frequency parameter measurement of 1000 kV Wannan-Zhebei UHV transmission line,it was necessary to take some anti-interference measures.Power-frequency varying vector method and non-power frequency method could be used for the frequency parameter measurement of UHV transmission line.For the impedance parameters measurement,it was appropriate to adopt parallel capacitance compensation method.
【Fund】: 国家电网公司科技项目(编号SGJLJSFW[2013]494);; 浙江省电力公司科技项目(编号5211011306XF)
【CateGory Index】: TM75
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