摘要
本文从理论上分析了零序互感对在线路发生各类金属性接地故障情况下的接地距离保护测量阻抗的影响，揭示了零序互感输电线路接地距离保护的区外故障发生超越误动的必要条件，导出了保护第二段防止超越误动的整定计算公式。
In this paper, the influence of zero sequence of zero sequence mutual inductance on measured impedance of grounding distanceprotection is analyzed in theory under the situation of metallic grounding fault.The necessary condition of produc-ing misoperation caused by the faults out of the protection range is given for the transmission lines with zero se-quence mutual inductance. The calculation formula for setting of the second section of the protection device to pre-vent the misoperation is given too.
出处
《电网技术》
EI
CSCD
北大核心
1994年第3期28-34,共7页
Power System Technology
关键词
零序互感
距离保护
输电线路
Zero sequence mutual inductance Distance protection Power transmission line
