Power System Reliability Evaluation Using Fault Tree Approach Based on Generalized Fuzzy Number

Abstract

This paper describes a fault tree technique based on generalized fuzzy numbers to a possibility distribution of reliability indices for power systems. Due to uncertainty in the collected data, all the failure probabilities are represented by generalized trapezoidal fuzzy number. In this paper, the fault-tree incorporated with the generalized trapezoidal fuzzy number and minimal cut sets approach is used for reliability assessment of power systems. An example of gas power plant is given to demonstrate the method. By using this approach fuzzy system reliability can be analyzed in a more flexible and more intelligent manner.