摘要
由于电气化铁路高速发展,雷击25k V电力牵引网的事故逐渐增多。耐雷水平和雷击跳闸率是用来评价一条供电线路遭受雷击的主要指标。供电线路可能经过直击雷和感应雷遭受雷击。过电压从而导致线路故障。在进行防雷设计和采取防雷措施时,必须考虑到该地区的雷电活动情况。本文提出了分别利用避雷针和避雷线改进25k V电力牵引网防雷水平的方法,通过计算,来分析电力牵引网的耐雷水平的改善。
Due to the rapid development of electrified railway, the accidents of lightning to 25 k V electric traction network are increasing gradually. The lightning withstand level and lightning trip rate is the main index to evaluate a power line lightning. The power supply line may be struck by direct lightning and induced lightning. Overvoltage leads to line fault. When lightning protection design and lightning protection measures are taken, the lightning activity in the area must be taken into account. This paper proposes using lightning rod and ground wire. Through calculation and analysis, the lightning protection level of the network is modified.
出处
《内燃机与配件》
2018年第1期233-234,共2页
Internal Combustion Engine & Parts
关键词
电力牵引网
避雷针
避雷线
耐雷水平
electric traction system
lightning rod
lightning conductor
lightning protection level
