摘要
在线评价核电机组可靠性是保障机组安全运行的关键。针对静态可靠性分析方法无法满足核电常规岛给水系统可靠性在线评价要求,提出了一种改进的适于时间序列分析的GO-FLOW可靠性分析方法;同时针对由于系统设备故障会造成设备可靠性参数变化进而影响可靠性分析的准确性问题,采用基于鱼群优化算法的支持向量机建立给水系统故障诊断模型,当系统故障时,采用熵权Topsis和灰色关联度对系统设备状况进行评估,根据设备状况修正GO-FLOW计算系统可靠度时的设备可靠性参数,从而实现了给水系统可靠性在线评价。仿真结果表明该方法能在线、准确、定量评价整个给水系统的可靠性,具有广泛适用性。
The online reliability evaluation of nuclear power unit in real time is the key to ensure the safe operation of the unit.In view of the fact that the static reliability analysis method cannot meet the online reliability requirements of conventional island water supply systems for nuclear power,an improved GO-FLOW reliability analysis for time correlation method is presented.At the same time,because the failure of the system components will cause the change of the reliability parameters,thus affecting the accuracy of reliability analysis.A fault diagnosis model of water supply system is established by using artificial fish swarms algorithm-support vector.When the system fails,the entropy weight Topsis and grey correlation degree are used to evaluate the state of fault components,and the component reliability parameters in the GO-FLOW reliability analysis method are modified,so that the online reliability evaluation of the water supply system has been realized.Simulation results show that the reliability of the entire water supply system can accurately evaluated online,and it has wide applicability.
作者
张小勇
魏振华
林令知
柴雨桐
杨国田
ZHANG Xiaoyong;WEI Zhenhua;LIN Lingzhi;CHAI Yutong;YANG Guotian(State Nuclear Electric Power Planning Design&Research Institute Co.,Ltd.,Beijing 100095,China;School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China)
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2021年第4期82-90,共9页
Journal of North China Electric Power University：Natural Science Edition
基金
国家科技重大专项项目(2018ZX06001001).
关键词
给水系统
可靠性
在线评价
GO-FLOW法
灰色关联度
water supply system
reliability
online evaluation
GO-FLOW method
gray correlation degree
