Analysis on Current Characteristics of Ultra High Transmission Line with Multi Series Compensation Capacitors
Gao Chao1, Zheng Tao1, Bi Tianshu1, Du Dingxiang2
1. State Key Lab of Alternate Electrical Power System with Renewable Sources North China Electric Power University Beijing 102206 China; 2. Chinese Electric Power Research Institute Beijing 100085 China
Abstract The conditions of current reversal in UHV transmission line with multi-series compensation under different fault conditions are theoretically analyzed. Basing on Jindongnan- Nanyang-Jingmen UHV power transmission project, a multi series compensation system model is established. And then, the analysis formulas of current when different faults occur at different places are deduced. The current characteristics are analyzed when the local line and the adjacent line occur symmetrical or asymmetrical fault. At the same time, the conditions of current reversal are proposed, which is helpful for relay performance analysis of the UHV power system．In the end, based on the parameters of UHV power transmission project, the simulation of 1 000kV transmission line with multi-series compensation capacitors based on PSCAD is performed, and simulation results conform to those of theoretical analysis.
Gao Chao,Zheng Tao,Bi Tianshu等. Analysis on Current Characteristics of Ultra High Transmission Line with Multi Series Compensation Capacitors[J]. Transactions of China Electrotechnical Society, 2015, 30(20): 193-198.
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2015, Vol. 30 
