核电厂汽轮机轴系振动测量系统抗雷击干扰性能提升研究  

Study on the Improvement of Anti-Lightning Interference Performance of Shafting Vibration Measurement System of Nuclear Power Turbine

作　　者：薛胜峰 郑祥东 谭旭东 肖群雄 XUE Sheng-feng;ZHENG Xiang-dong;TAN Xu-dong;XIAO Qun-xiong(Yangjiang Nuclear Power Co.,Ltd.,Yangjiang,Guangdong Prov.529941,China)

机构地区：[1]阳江核电有限公司,广东阳江529941

出　　处：《中国核电》2020年第4期505-511,共7页China Nuclear Power

摘　　要：针对阳江核电厂汽轮机轴系振动测量系统在雷击环境下易受干扰影响问题,本文通过理论分析确认系统原设计存在参考电位设计不合理,跳机逻辑不合理,汽轮机厂房屏蔽能力不佳等问题。从系统绝缘、逻辑优化、厂房屏蔽等方面提出优化改进措施,经实际应用验证有效,多次成功抗击台风及雷暴天气。The aim is to solve the problem that the shafting vibration measurement system in Yangjiang Nuclear Power Plant Turbine is easily affected by interference under lightning strike environment.Through theoretical analysis,this paper confirms that the original design of the system has some problems,such as unreasonable reference potential design,unreasonable tripping logic,poor turbine building shielding capability,etc.The optimization and improvement measures are put forward from the aspects of system insulation,logic optimization,factory building shielding,etc.The practical application proves that the measures are effective and have successfully resisted typhoons and thunderstorms for many times.

关 键 词：雷击 振动测量 绝缘 汽轮机 屏蔽 

分 类 号：TM623[电气工程—电力系统及自动化]