首先针对两重化、双两重化、三重化以及双三重化这四种系统架构下的安全仪表系统的要求时平均危险失效率(Average Probability of Dangerous Failure on Demand,PFDavg)、误跳车率(Spurious Trip Rate,STR)以及生命周期成本(Life Circle Cost,LCC)进行多目标模型分析。并结合工控行业实际情况,分析单重架构Moo N及双重架构2×Moo N的各指标的差异,结果表明两重化架构下的误跳车率是其他三种架构下的近100倍。基于此再进一步分析现场需要的备件数量,以及在双两重化和三重化架构下生命周期成本。
【英文摘要】
Firstly this paper analyze multi-objective model of Dual-module,Double Dual-module,Triple-module and Double Triple-module of Safety Instrumented System on the Average Probability of Dangerous Failure on Demand(PFDavg),Spurious Trip Rate(STR) and Life Circle Cost(LCC).Combine the actual state of industrial control,analyze the variation situation for both index in single dual-architecture Moo N and double dual-architecture 2×Moo N,the result indicates that the STR of dual-architecture is nearly 100 times lage...