An Improved Chance-Constrained Method for Unit Commitment in Multi-regional Power Systems Considering Wind Power Uncertainties

With the increasing proportion of wind power in the power system, it brings a new challenge to solve the unit commitment problem for power system considering wind power uncertainties accurately and quickly. An improved chance-constrained method for unit commitment in multi-regional power systems considering wind power uncertainties is proposed in this paper. The spinning reserve constraints in all areas are formulated as chance constraints. The bundle method is used as the transformation strategy of chance constraints. The proposed method in this paper is verified by a power system with 3 areas. The results show that the proposed method can greatly shorten the calculation time and improve the calculation efficiency while ensuring the reliability and economy of scheduling results.