CPR1000机组RGL系统双夹持故障分析  

Analysis of Double-Hold Fault in RGL System of CPR1000 Unit

作　　者：姬海波 荆茂林 张恒 JI Haibo;JING Maolin;ZHANG Heng(Guangxi Fangchenggang Nuclear Power Co.,Ltd.,Fangchenggang 538001,Guangxi,China;South China Regional Office of National Nuclear Safety Administration,Ministry of Ecology and Environment,Shenzhen 518000,Guangdong,China;School of Computer Science and Technology,Chongqing University of Post and Telecommunications,Chongqing 400065,China)

机构地区：[1]广西防城港核电有限公司,广西防城港538001 [2]生态环境部华南核与辐射安全监督站,广东深圳518000 [3]重庆邮电大学计算机科学与技术学院,重庆400065

出　　处：《南方能源建设》2022年第2期101-106,共6页Southern Energy Construction

基　　金：国家自然科学基金资助项目“基于多传感成像的EAST托卡马克上光学等离子体边界实时重建研究”(12005030)。

摘　　要：[目的]棒位和棒控系统RGL(Rod Position Indication and Rod Control System)是核电机组重要的控制系统之一,其性能好坏直接关系到核电机组的可用性。当该系统出现双夹持故障时会将整个控制棒组闭锁,在机组进行瞬态试验、升降负荷或甩负荷期间控制棒组不能及时动作,可能导致反应堆停堆。[方法]结合某CPR1000核电机组出现的RGL系统双夹持故障经验反馈案例,从设计原理的角度对双夹持故障出现的原因进行了分析研究。[结果]分析结果指出控制器软件中的时刻控制器误判MG机架状态,从而输出错误信号导致了双夹持故障触发。[结论]软件缺陷是造成RGL系统双夹持故障的重要因素。[Introduction]The RGL system(Rod Position Indication and Rod Control System)is one of the important control systems in nuclear power unit,its performance is directly related to the availability of nuclear power unit when the double-hold fault happen in the RGL system,the entire control rod group will be locked,and the control rods cannot move in time during the transient test,load reducing operation or load raising operation of the unit,which may lead to the shut down of the reactor.[Method]Based on the experience feedback of the double-hold fault of the RGL system in a CPR1000 unit,this paper analyzed and researched the cause of the double-hold fault from the perspective of design principles.[Result]The analysis results indicate that the moment controller in the controller software misjudges the state of the MG rack,and thus outputs the wrong signal,which leads to the triggering of the double-hold fault.[Conclusion]Software defect is an important factor causing double hold fault of RGL system.

关 键 词：RGL 核电机组 CPR1000 双夹持故障 经验反馈 软件故障 

分 类 号：TL4[核科学技术—核技术及应用] TL732