摘要
针对一起800 kV直流输电线路雷击故障跳闸,分析确定故障性质和雷击点范围,得出负极性雷电是造成直流线路故障的主要原因。由于行波保护动作,启动了控制系统的直流线路故障重启功能,使得故障控制成功后,直流系统恢复运行。根据直流线路易遭受雷击的特点,提出直流线路防止雷电绕击的应对措施。
For the 800 kV DC transmission line lightning strike trip, the nature of the fault and lightning point range is analysised and determined, and the negative lightning is the main cause of DC line failure. As a result of traveling wave protection action, the control system of the DC line fault restart function is started, which the DC system to resume operation after the suceess of the fault control. According to the DC line is easy to suffer the characteristics of lightning, put forward DC circuit to prevent lightning damage response measures
出处
《电子测试》
2017年第7X期109-111,共3页
Electronic Test
