大亚湾核电站外电源系统可靠性分析中GO法的应用

应用GO法进行了大亚湾核电站外电源系统的可靠性分析，导出了具有共有信号时系统稳态可靠性指标的直接定量公式和两状态单元进行状态概率动态计算的公式，提出了求解系统是小故障事件集合的方法，求出外电源系统的所有最小故障事件集合及其故障概率，并进行了电网失稳后外源系统供电恢复概率的动态计算。结果表明，在可修系统的稳态和动态可靠性分析中GO法是一种十分简便而有效的方法。

Application of GO Methodology in Reliability Analysis of Offsite Power Supply of Daya Bay NPP

This paper applies the GO methodology to reliability analysis of the offsitepower supply system of Daya Bay NPP. The direct quantitative calculation formulas of the stable reliability target of the system with shared signals and the dynamic calculation formulas of the state probability for the unit with two states are derived. The method to solve the fault event sets of the system is also presented and all the fault event sets of the outer power supply system and their failure probability are obtained. The resumption reliability of the offsite power supply system after the stability failure of the power net is also calculated. The result shows that the GO methodology is very simple and useful in the stable and dynamic reliability analysis of the repairable system.