Considering the load uncertainty for solving security constrained unit commitment problem in presence of plug-in electric vehicle

In this paper, the load uncertainty for solving Security constrained unit commitment (SCUC) problem in presence of plug-in electric vehicle is studied. SCUC is one of the most important research areas in power systems which enables commitment scheduling table of the generation unit commitment in order to maximize the security and minimize the cost, beside satisfaction of the constraints of the system and units, during a specified time period. Recent advances in technology, caused power system operators to focus more on renewable energy resources beside thermal units. Vehicle to grid (V2G) technology is one of these new resources of energy. On this aim, V2G by reducing the dependence of the power generation system to small and expensive thermal units, can play an important role in reducing operation cost and load fluctuation management. According to the probability of error existence in load forecasting, the system planner must appoint the generation pattern in a way that beside of load satisfaction, the reserves been provided and the error of load forecasting been compensated. In this paper, by two-stage stochastic programming, the uncertainty of load forecasting while solving SCUC problem in a short period (24 hours) is investigated. Nowadays one of the most effective strategies for evaluating the influences of V2G connection in an efficient operation of generation system, is SCUC performing on the power systems in which V2Gs are connected to it in different buses. Therefore, this issue is considered in this paper, in a way that results of numerical studies on independence presence of V2G, and the improvement of operation indices are illustrated.