摘要
对于10 kV特种输电系统中常见的防雷保护问题,针对湖北某市一电台所采取的防雷技术措施,分析其问题及不足,如电线与输电塔间的接地电阻超标、配电变压器低压端没有设置避雷器等;建议采用可调整的过压保护设备,对杆塔、发射台的接地进行优化,对变压器的低压端进行避雷等方面的改进。通过可调整的跨线避雷器的避雷效应的模拟实验,证明了以上改进对于特定10 kV的广播电台和其他类型的广播电台具有良好的防雷性能。
In view of the common lightning protection problems in the 10 kV special transmission system,this paper analyzes the problems and deficiencies of the lightning protection measures according to the lightning protection technical measures taken by a radio station in Hubei Province,such as the grounding resistance between the wire and the transmission tower exceeds the standard,the lowvoltage end of the distribution transformer is not equipped with a lightning arrester,etc;It is suggested to adopt adjustable overvoltage protection equipment,optimize the grounding of towers and launchers,and improve the lightning protection of the low-voltage end of the transformer.Through the simulation experiment of the lightning protection effect of the adjustable cross line arrester,it is proved that the above improvement has good lightning protection performance for specific 10 kV radio stations and other types of radio stations.
作者
刘军
叶建茹
姬苗飞
何小兰
LIU Jun;YE Jianru;JI Miaofei;HE Xiaolan(Yulin Radio and Television Centre,Yulin 719000,China)
出处
《电视技术》
2022年第10期68-70,共3页
Video Engineering
关键词
转播站
防雷改造
接地电阻
可调式过电压保护间隙
relay station
lightning protection transformation
grounding resistance
adjustable overvoltage protection gap
