Robust unit commitment of power systems integrated wind power considering demand response and pumped storage units

Abstract

In view of the accommodation problem of large-scale wind power integration,a robust unit commitment optimization method considering demand response and pumped storage units is proposed. On the one hand,the mathematical model considering the operation characteristics of demand response and pumped storage units is established to improve the flexibility of system operation through collaborative optimization. On the other hand,the uncertain set considering the uncertain budget is used to describe the random fluctuation characteristics of wind power. Considering the system operation constraints and robust feasibility constraints,a robust unit commitment model is constructed by adopting the rescheduling strategy based on an affine compensation mechanism to minimize the system operation cost. Furthermore,the robust optimization model is converted into a certainty mathematical programming problem according to the duality principle,and the correctness and effectiveness of the proposed method are verified by numerical test results on the modified IEEE 39-bus test system.

Keywords

• demand response
• pumped storage unit
• robust optimization
• unit commitment
• wind power
• uncertainty