Modified SPEA2 for Probabilistic Reliability Assessment in Smart Grids

This paper proposes a new method for probabilistic reliability evaluation with multi-objective meta-heuristics (MOMH) in smart grids. Recently, the smart grids increase the degree of the uncertainties due to the renewable energy. The importance of the probabilistic reliability assessment of electric power systems has been recognized. Probabilistic reliability evaluation has been broadly used for power system operation and planning due to the capability of considering the various system uncertainties. This paper proposes a new method for probabilistic reliability evaluation with MOMH. It is useful for evaluating a set of the Pareto solutions systematically. As MOMH, SPEA2 (Strength Pareto Evolutionally Algorithm 2) is used to evaluate the Pareto solution due to the good performance of solution diversity which is quite different from the conventional multi-objective reliability evaluation. The effectiveness of the proposed method is successfully demonstrated to the IEEE reliability Test System (IEEE-RTS). (C) 2010 Published by Elsevier B.V.