分布式策略的核动力装置故障诊断技术研究  

Research on fault diagnosis technology for a nuclear power unit based on the distributed strategy

作　　者：雷世雄 徐非[2] 谭翔[2] 彭敏俊 

机构地区：[1]海军驻武汉七一九所军事代表室,湖北武汉430000 [2]哈尔滨工程大学核科学与技术学院,黑龙江哈尔滨150001

出　　处：《应用科技》2015年第2期68-74,共7页Applied Science and Technology

摘　　要：对核动力装置中的故障问题进行了研究,根据系统结构和运行特点,基于分布式诊断策略将核动力装置划分成三级子单元结构,将故障诊断任务划分到不同的子单元中,采用核主元分析(kernel principal component analysis)进行故障检测,监测核动力装置的运行状态,采用模型法对不同的设备单元建立相应的模型进行故障诊断、识别,并辅以专家知识进行补充,得到故障问题的最优解,并以此为依据设计了核动力装置分布式故障诊断系统。在全范围仿真机上的测试表明,基于分布式策略的故障诊断方法有效,核动力装置分布式故障诊断系统具有较高的可靠度,满足故障诊断的功能要求。This paper studies the fault problem in a nuclear power unit. According to the structure and operation characteristics of the system, it is divided into three-level subunits on the basis of the distributed strategy. Kernel principle component analysis is used as the fault detection method, and physical models and expert knowledge that corresponds to each unit are used to diagnose faults so as to eliminate the influence of symptom coupling on diagno- sis results and get optimal solution of fault problem under abnormal conditions. A NPPDMFDS is developed on the basis of the method mentioned above. The test on the full scope of simulator shows that the fault diagnosis method based on the distributed strategy is effective and NPPDMFDS has high reliability, meeting the requirement of fault diagnosis.

关 键 词：分布式策略 故障诊断 诊断模型 专家知识 核主元分析 

分 类 号：TK05[动力工程及工程热物理]