摘要
中波广播发射天馈线系统工作环境复杂,防雷设计任务艰巨。分析影响天馈线防雷效果的关键因素,从器件选型、接地优化、线路防护等方面提出防雷策略。器件选择方面,在重点部位布置避雷针、隔离开关等。接地系统选用优质材料,采用多点接地以降低接地电阻。同时加强线路本身防护,提高绝缘与防水性能。这些措施可以有效保护天馈线安全。
The working environment of the feeder system of medium wave broadcast transmitting sky is complicated and the lightning protection design task is difficult.This paper analyzes the key factors affecting the lightning protection effect of the antenna feeder,and puts forward the lightning protection strategy from the aspects of device selection,grounding optimization and line protection.In terms of device selection,lightning rod and isolation switch are arranged in key parts.The grounding system uses high-quality materials and adopts multi-point grounding to reduce grounding resistance.At the same time,strengthen the protection of the line itself,improve the insulation and waterproof performance.These measures can effectively protect the safety of the antenna feeder.
作者
傅王洁
FU Wangjie(Zhejiang Medium Wave Launch Management Center,Hangzhou 310000,China)
出处
《电视技术》
2024年第3期119-121,共3页
Video Engineering
关键词
中波广播
发射天馈线
防雷设计
避雷器件
多点接地
medium wave broadcast
transmission feeder line
lightning protection design
lightning protection devices
multi-point grounding
