基于SIMetrix仿真的核电仪控电路最坏情况分析

Worst Case Analysis of Control Card’s Circuit in Nuclear Plant Based on SIMetrix Simulation

核电厂重要仪控卡件作为控制和保护的核心,其可靠性关系到整厂的运行安全。最坏情况电路分析是一项在设计限度内预测电路性能稳定性的技术,是寻找卡件电路薄弱环节的一项重要手段。本文提出基于SIMetrix仿真软件,搭建一种电压采样电路的仿真模型,分析元器件的容差,并提出相应的改进方案,仿真验证了电路的性能指标。

The key instrument control cards which applied in signal feedback or protection is very important to the safety of nuclear power plant.Worst case analysis is technique to predict circuit performance within design limits,and can be used to figure out weak point of circuit.This paper introduces worst case simulation based on SIMetrix,creates simulation module of a sensing circuit,analyzes component’s tolerance,propose related solution to meet performance requirement.