Accident analysis of system circulating current caused by UHVDC line fault
YANG Shuai1, NIU Zheng2, ZHANG Chi3, ZHANG Qingwu4, NAN Dongliang1
1. Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd, Urumqi 830011; 2. State Grid Xinjiang Electric Power Co., Ltd, Urumqi 830063; 3. Electric Power Research Institute, State Grid Jiangsu Electric Power Co., Ltd, Nanjing 211103; 4. NR Electric Co., Ltd, Nanjing 211102
Abstract：This paper describes a special DC line fault in which the fault pole generates system circulation, resulting in the shutdown of non fault pole and the loss of transmission power. In view of the accident, this paper analyzes the fault causes and puts forward countermeasures to eliminate the circulating current, so as to avoid non fault pole shutdown in case of similar faults again, and provides guidance for avoiding the shutdown of the whole station in case of circulating current in DC line fault of converter station.
2022, Vol. 23 
