摘要
以雷电发展的先导模型为研究基础,分析地面物体上行先导对雷电先导的诱导作用,并仿真计算现阶段特高压直流输电线路常用防雷方式的保护原理及范围,研究窄走廊非同塔多回特高压输电线路防雷装置的相互作用,提出线路间存在一定的防雷屏蔽作用及屏蔽范围的计算方式,并以典型雷击故障进行验证,最终提出适合于窄走廊的特高压直流输电线路基本防雷治理原则。
With the lightning leader developing model (LDM) as the research basis, the inducement of upward leader of ground objects on the lightning leader is analyzed, and protection principles and scope of some commonly used protection methods against lightning on UHV DC transmission lines are simulated, besides, the interaction between lightning protection devices on UHV DC multi-circuit transmission lines on different towers in narrow corridor are studied. A calculation method considering lightning shielding effect and shielding scope between lines is proposed, which is verified by a case of typical lightning stroke fault, and finally some basic lightning protection management principles for UHV DC transmission lines with narrow corridor are proposed.
出处
《智能电网》
2015年第7期617-621,共5页
Smart Grid
关键词
窄走廊
特高压
多回线路
防雷屏蔽
narrow corridor
ultra-high voltage(UHV)
multi-circuit transmission lines
lightning shielding
