Pseudo-chronological simulation for composite reliability analysis with time varying loads

This paper presents a new methodology to evaluate loss of load indices, wit h particular emphasis on LOLC (loss of load cost) assessment, for composite generation and transmission systems considering time varying loads for dif ferent areas or buses. The proposed approach, named pseudo-chronological si mulation, retains the computational efficiency of non-sequential Monte Carl o simulation and the ability to model chronological load curves in sequenti al simulation. It considers the actual blocks of unsupplied energy per cons umer class, per bus, and the respective duration, to accurately characteriz e the interruption process. Case studies on the IEEE-MRTS (Modified Reliabi lity Test System) and the BSS (Brazilian South-Southeastern System) are pre sented and discussed.