A technique for thermal and energy storage system unit commitment

This paper introduces the scheduling method for thermal and energy storage system (ESS) unit commitment. The ESS is incorporated to achieve peak load shaving and to reduce the total cost. The thermal scheduling is implemented by the extended priority list (EPL) method. The EPL method consists of two steps, in the first step we get rapidly some initial unit commitment schedules by priority list (PL) method. In this step, operational constraints are disregarded. In the second step, unit schedules are modified using the problem specific heuristics to fulfill operational constraints and to reduce the total cost. To calculate efficiently, some heuristics are only applied to solutions which can expect improvement. The ramp constraint for thermal unit is considered at last of EPL method. The ESS scheduling is carried out based on the thermal unit schedule obtained by EPL method. Several numerical examples demonstrate the effectiveness of the proposed method.