摘要
目前全国的自动气象站已经大量地进行野外布点,在野外布点的自动气象站经常遭受到雷击,主要原因是自动气象站设备一般都是采用220V交流供电,在野外输送的交流电通常是采用架空线路,容易遭受雷击而损坏自动气象站设备。由于供电线路并接浪涌保护器的方法所起的防雷效果一般来说非常有限,难以从根本上解决自动气象站防雷问题。而利用电源变压器的物理隔离和电磁感应特性,将供电线路入侵的雷电脉冲有效地隔离和吸收,大幅削弱雷电脉冲能量的冲击,有效地达到了保护自动气象站设备的目的。
The automatic weather stations across the nation have a lot of field layout at present.The field distributions of automatic weather stations often suffer from the lightning mainly because the automatic weather station equipment usually adopts 220 V AC power supply in general.The alternating current in the field is often transmitted through overhead lines,which is easily suffered by the lightning and damaged the automatic weather station equipment.The lightning protection effect is limited by connecting power supply line and surge protector,so it is hard to solve the problem of the automatic weather station＇s lightning protection.By using the characteristics of physical isolation and electromagnetic induction of power transformer,the lightning pulse invaded in power supply line can be effectively isolated and absorbed,significantly weakening the impact of lightning pulse energy and achieving protection purpose of automatic weather station.
出处
《气象水文海洋仪器》
2017年第1期112-115,共4页
Meteorological,Hydrological and Marine Instruments
基金
2013年阳江市气象局自动气象站保障项目
关键词
自动气象站
供电线路
物理隔离
防雷
automatic weather station
power supply line
physical isolation
lightning protection
