Abstract：For the 35kV transmission line zero sequence over-current and overload trip fault of photovoltaic power station, analysis method for the influence of three-phase unbalanced current on zero-sequence protection is given in this paper. In addition, all possible reasons of the zero sequence current protection action abnormally are analyzed synthetically, and some solving suggestions are also proposed. The analysis method and the solving suggestions have certain practical value for improving the reliability and safety of photovoltaic power station.
张光儒, 杨勇, 刘丽娟, 朱宏毅, 马喜平. 光伏电站送出线路零序保护异常动作分析[J]. 电气技术, 2019, 20(1): 93-96.
Zhang Guangru, Yang Yong, Liu Lijuan, Zhu Hongyi, Ma Xiping. Analysis of zero sequence protection action abnormally for photovoltaic power station transmission line. Electrical Engineering, 2019, 20(1): 93-96.
2019, Vol. 20 
