A mixed integer programming based approach for unit commitment problem

Abstract

Unit commitment (UC) problem is a challenging task in power system operation that has attracted much attention in the two last decades. It aims to find the optimum statues of the thermal units and their optimum to the predicted load demands in order to minimize the total production cost. Within this context, this paper presents a piecewise linear approximation method for solving this mixed integer problem (MIP). Power balance, generation capacity, minimum up/down times and spinning reserve constraints are considered in this study. The proposed method is implemented in GAMS 24.2. Simulation results are carried out using the tenunit system.