水电站计算机与通信系统的防雷技术

Lightningproof technology for the computer and communication system in small hydro power stations

随着计算机和通信技术的快速发展 ,各行各业都不同程度地建立了计算机网络 ,通信手段也越来越好 ,同时 ,由于雷击而导致计算机与通信系统损坏的问题也越来越严重 ,避雷针不能阻止感应雷击过电压、操作过电压 ,以及因这些过电压在泄放电流时在其周围产生的感应电压 ,而这些过电压却是破坏计算机与通信设备的罪魁祸首。通过对气体放电管、压敏电阻、抑制二极管和半导体放电管等避雷器件的特性作比较分析 ,设计了实用、有效的避雷系统 ,并提出水电站计算机与通信系统的防雷要点。

With the development of computer and communication technology, the computer network is used in many fields of commercial, industrial control and our daily life. Also the communication system plays more and more roles in small hydro power stations. The computer and communication systems are usually damaged by the lightning; But the traditional lightning rod can't prevent over\|voltage brought by the lightning or operating.This paper analyses the different characteristics of the gas\|discharge tubes, varistors, supperession diodes (TVS) and semiconductor lightningproof element and designs a lightningproof system with practicality and availability for small hydro power stations.