丧失厂外电的柴油发电机故障树逻辑循环截断

Fault Tree Logic Loop Truncation Analysis Based on Loss of Off-site Power Source of Nuclear Power Plant

柴油发电机电源系统故障树建模是整个核电厂电力系统概率安全分析体系中最为重要的内容之一。在柴油发电机电源系统的故障树建模过程中,会出现交流电系统、直流电系统的逻辑循环,如不做处理,将无法得到故障树顶事件的失效概率。本文在国内首次通过建立完整的柴油发电机电源系统故障树模型,解决柴油发电机电源系统故障树建模中的逻辑循环截断问题,为今后整个电力系统故障树建模奠定基础。

The fault tree modeling of diesel generator power system is one of the most important contents in the probability safety analysis system of the entire power plant.During the fault tree modeling of diesel generator power system,the logic cycle of the AC system and the DC system will occur.Failure to do so will not lead to the failure probability of the top fault of the fault tree.In this paper,a complete fault tree model of diesel generator power system is established to solve the problem of logic cycle truncation in the fault tree modeling of diesel generator power system,which lays the foundation for the entire power system fault tree modeling in the future.