故障树分析法在石化热电厂供汽系统可靠性分析中的应用

石化企业的自备热电厂以供汽为主,发电为辅,热电厂供汽的可靠性直接影响着企业的生产。故障树作为系统失效分析的有力工具,可应用于热电厂供汽的可靠性分析和预测。文章介绍了故障树分析法的基本原理,结合热电厂供汽系统的特点,建立了供汽系统的失效模型,采用最小割集进行了定性分析,确定了影响热电厂供汽系统可靠性的主要因素。

Application of fault tree analysis method in reliability analysis of steam-supplying system in thermal power plant of SINOPEC enterprise

The primary function of SINOPEC enterprise owned thermal power plant is to supply steam,and its secondary function is to generate electric power,therefore the reliability of steam-supplying system affects directly the production of enterprises.As a powerful tool in system failure analysis,Fault Tree Analysis(FTA)can be applied in the reliability analysis and prediction of supplying-steam in thermal power plant.In the paper,the basic concept of FTA is described,and the failure model of steam-supplying system is proposed in accordance with the characteristics of supplying-steam of thermal power plant.The main factors,which affect the reliability of supplying-steam,are determined by qualitative analysis in which the minimal cut-set approach is used.