New method for reliability assessment of power system based on Bayesian networks

This paper presents the application of Bayesian networks for the reliability assessment of power system. Bayesian networks can flexibly make expression and inference of uncertain information. Bayesian networks permit not only computing the reliability indices of a power system but also presenting the effect of each component or some components on the system reliability. A new method to construct Bayesian networks with the ideology of fault tree and minimal path sets are introduced in this paper. Thus the shortcomings of traditional reliability assessment methods are overcome. The results of two examples prove the validity and superiority of the method in the application of the reliability assessment of power system.