摘要
为了评估核电厂应急柴油机数字化控制方案替代部分传统继电器控制系统的可行性,对基于数字化专用仪控平台的柴油机电控系统进行了可靠性分析和计算。依据该系统的架构设计,建立了系统可靠性框图模型,并结合可靠性设计和失效率预计数据,采用蒙特卡罗方法计算得到的系统可用性达到99.99%。分析结果表明,冗余设计、故障诊断和维修性设计对系统可用性影响显著。该研究结论为柴油机电控系统的数字化改造提供了可靠性数据参考,并有助于同类系统在设计阶段有效地提升固有可靠性。多种可靠性分析方法从系统架构、功能安全和运行维护方面更准确地描述了电控系统的可用性,为数字化仪控设备的可靠性分析提供了方法借鉴。
In order to evaluate the feasibility of replacing some traditional relay control systems with a digital control scheme for EDG used in nuclear power plants,the reliability of a diesel engine electronic control system was analyzed and calculated,which was designed based on a digital specific instrument and control platform.According to architecture design of the electronic control system,system RBD model was established.Combining reliability design and failure rate prediction data,the system availability was calculated to be 99.99% with Monte Carlo method.Analysis result indicates that redundancy design,failure diagnostic and maintainability design have significant influence on system availability.The research provides reliability data reference for digitalization of diesel engine electronic control systems,and contributes to improving inherent reliability of similar systems in design phase effectively.Multiple reliability methods is beneficial to more accurate description of electronic control system availability from system architecture,functional safety,operation and maintenance aspects.It can offer some reference for comprehensive reliability analysis of digital instrument control equipment.
作者
殷勇
叶顺流
周勇
YIN Yong;YE Shunliu;ZHOU Yong(China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen 518116,China;Daya Bay Nuclear Power Operations and Management Co.,Ltd.,Shenzhen 518116,China)
出处
《自动化仪表》
CAS
2021年第1期67-72,共6页
Process Automation Instrumentation
关键词
数字化平台
柴油机
电控系统
可靠性
可用性
冗余设计
故障诊断
维修性设计
Digital platform
Diesel engine
Electronic control system
Reliability
Availability
Redundancy design
Failure diagnostic
Maintainability design
作者简介
殷勇(1970-),男,学士,高级工程师,主要从事核级设备研发和鉴定,以及核级设备自主化、国产化供货工作,E-mail:yin_yong@cgnpc.com.cn;通信作者:叶顺流,男,博士,高级工程师,主要从事仪控平台的研发工作,E-mail:18126279220@163.com。
