Unit Commitment in Smart Grid Considering Demand Response and Stochastic Wind Generation

Integration of wind units into power system introduces various sources of technical and economical challenges to operate power system due to its inherent uncertainty and variability. In operation of power system, stochastic wind generation can affect the system security. In this paper, optimal Security-Constrained Unit Commitment (SCUC) in presence of Demand Response (DR) program based on stochastic wind generation is proposed as a novel method of SCUC to address the mentioned concern. In order to secure system against stochastic wind generation, the SCUC results have to be valid for most probable wind generation scenarios. The problem is formulated as a Mixed-Integer Programming (MIP) and solved using Benders decomposition which is implemented using GAMS software (CPLEX solver). The results of applying proposed method on IEEE six-bus test system show that the proposed method can successfully find the optimal SCUC which satisfied all constraints while is secure against variations in wind generation.