三代核电主泵变频器控制系统可靠性改进研究  

Research on Reliability Improvement of the Control System of VFD in Third Generation Nuclear Power Plant

作　　者：韩伟 刘井强 马涛 姜旭东 魏西平 Han Wei;Liu Jingqiang;Ma Tao;Jiang Xudong;Wei Xiping

机构地区：[1]三门核电有限公司设备管理处 [2]沈阳远大电力电子科技有限公司

出　　处：《变频器世界》2023年第7期94-98,共5页The World of Inverters

摘　　要：国内某三代核电厂的独特设计之一是由主泵变频器为主泵运行提供60Hz电源。该核电厂主泵变频器故障率远高于厂内其他关键敏感设备,多次发生控制系统故障,导致机组发生停机停堆。本文介绍了主泵变频器控制系统的设计改进方案,它采用了三主控几余控制系统,具备无缝切换至下一级高优先级无故障控制器的能力。该改进方案还具有在线检修的功能,能够有效解决现有变频器存在的主控制器失效后即丧失几余等问题。这种设计极大的提高了变频器的可靠性、安全性、稳定性。One of the unique designs of the third-generation nuclear power plant in China is that the VFD provides 60Hz power supply for the main coolant pump.However,the failure rate of the VFD is much higher than other SPV equipment.The multiple control system has failed for some times which leads to plant shutdown.This article mainly introduced the plan to improve the reliability of the VFD by adopting a three main control redundancy control system.The new control system has the ability to seamlessly switch to the next level of high priority faultless controller.Furthermore,the new system is enable to perform online maintenance,which can effectively solve the problem of losing redundancy after the main controller of VFD fails.This design greatly improves the reliability,safety,and stability of the VFD.

关 键 词：主泵变频器 三主控控制系统 无缝切换 可靠性提升 

分 类 号：TM773[电气工程—电力系统及自动化]