大坝安全监测系统防雷和接地技术初探

雷电是大坝安全监测系统中 MCU、传感器、电缆遭受损坏的一个重要原因 ,它可能导致MCU失控、传感器失效和读数漂移 ,因而被人们误认为系统性能低劣、传感器安装工艺落后、密封失效 ,传感器或系统的设计施工不当。文章除介绍大坝安全监控系统中防雷和接地技术的一些基本概念外 ,在此基础上 ,分析了加拿大大坝安全监测自动化系统中采用的防雷和接地措施及其存在的问题 ,最后提出了防雷和接地技术设计的基本原则

LIGHTNING PROTECTION AND GROUNDING TECHNOLOGY IN DAM SAFETY MONITORING SYSTEM

Lightning is a major cause that destroys MCUs,sensors,and cables in the dam safety monitoring system,and it may lead to the loss of control of MCUs,invalidation of transducers and erratic data. People may attribute these to the performance of the system, installation techniques,failure of the seals,or inadequacies in the design.This paper introduces the basic conception of the technique of lightning protection and grounding,analyzes the problems in lightning protection and grounding for the dam safety monitoring system in Canada,and puts forward the design principles of lightning protection and grounding.