Soft Computing Tools for Reliability Analysis of Electric Power System

The focus of this book is the application of Linguistic Weighted Average (LWA), where the weights are always words modeled as interval type 2 fuzzy sets (IT2FS) for reliability analysis of interconnected power systems. Reliability analysis has been considered as an important step in any system design process. A reliable electrical Power system means a System which has sufficient power to feed the load demand during a certain period. With the interconnection of Photovoltaic (PV) and Wind Energy System (WES) as a Hybrid Electrical Power System (HEPS)into the Utility Grid (UG), the fluctuating nature of the energy produced by these systems has a different effect on the overall system reliability than that of the fluctuating natures of energy produced by UG.The complete study to determine the impact of interconnected PV/WES/HEPS into UG from reliability point of view is presented. A fuzzy logic technique using Type 2 fuzzy sets has also been presented to calculate and assess the reliability status for each HEPS configuration under study.