全球能源互联网（英文）2021，Vol.4Issue(6)：554-563,10.DOI:10.14171/j.2096-5117.gei.2021.06.003
基于主动注入的高压直流输电线路自适应重启方法
Adaptive restarting method for LCC-HVDC based on principle of fault location by current injection
摘要
Abstract
The existing LCC-HVDC transmission project adopts the fixed-time delay restarting method. This method has disadvantages such as non-selectivity, long restart process, and high probability of restart failure. These issues cause a secondary impact on equipment and system power fluctuation. To solve this problem, an adaptive restarting method based on the principle of fault location by current injection is proposed. First, an additional control strategy is proposed to inject a current detection signal. Second, the propagation law of the current signal in the line is analyzed based on the distributed parameter model of transmission line. Finally, a method for identifying fault properties based on the principle of fault location is proposed. The method fully considers the influence of the long-distance transmission line with earth capacitance and overcomes the influence of the increasing effect of the opposite terminal. Simulation results show that the proposed method can accurately identify the fault properties under various complex fault conditions and subsequently realize the adaptive restarting process.关键词
高压直流输电/自适应重启/主动注入/故障测距原理/故障性质判别Key words
LCC-HVDC/Adaptive restarting/Current signal injection/Fault location/Fault property identification引用本文复制引用
徐瑞东,宋国兵,侯俊杰,常仲学..基于主动注入的高压直流输电线路自适应重启方法[J].全球能源互联网（英文）,2021,4(6):554-563,10.基金项目
This project is supported by Science and Technology Project of State Grid Corporation of China(52094020006U),National Natural Science Foundation of China(NSFC)(52061635105),and China Postdoctoral Science Foundation(2021M692525). （52094020006U）
