摘要
以广东电网近几年发生的雷电侵入波事故为例,利用ATP-EMTP仿真软件,分析了广东电网近年来加强线路绝缘对变电站侵入波水平及避雷器通流的影响。仿真结果表明,安装变电站出线避雷器,可减少线路绝缘水平提高对变电站内电气设备的影响。通过讨论变电站内各避雷器的通流,提出了选择变电站避雷器标称电流的建议:出线避雷器选择标称电流较大的避雷器;在安装出线避雷器的条件下,站内母线和主变处避雷器可选择标称电流较小的避雷器。
Taking the lightning invasion wave incident of Guangdong power grid in recent years as an example,through the ATP-EMTP simulation software,the effect of strengthening line insulation on substation lightning invasion wave and flow of MOA for Guangdong power grid in recent years. Simulation results show that the impact of increase of the transmission line insulation level to substation electrical equipment can be reduced by installation of outlet arrester. Through discussion of each arresters＇ flow in substation,the suggestion for the selection of the arresters nominal current is proposed： choose arrester with higher nominal current for outlet arrester, in the case of install the outlet arrester, the arrester with lower nominal current can be chose for bus and arrester at main transformer in the substation.
出处
《电瓷避雷器》
CAS
北大核心
2012年第4期99-105,共7页
Insulators and Surge Arresters
关键词
雷电侵入波
输电线路
绝缘水平
绝缘配合
出线避雷器
lightning invasion wave
transmission outlet arrester insulation level
insulation coordination
