Topological analysis in bulk power system reliability evaluation

This paper presents a new computationally efficient methodology for calculating the reliability indices of a bulk power system using the state enumeration approach. The proposed approach utilizes topological analysis to determine the contribution of each system state to the frequency and duration indices at both the system and the bus level. In this approach, there is no need to conduct additional adequacy evaluations or utilize an optimization technique to identify the boundary wall between success and failure states. The effectiveness of the proposed methodology is demonstrated by application to the IEEE Reliability Test System (IEEE-RTS) and a model of the existing network of SaskPower in Canada. The proposed approach can also be used for noncoherent systems.