Optimal uncertain intervals in unit commitment with wind power
It is important to select an appropriate representation of wind power uncertainty for unit commitment (UC). Unlike previous studies predefining the scope of uncertainty, this paper presents a method to co-optimize wind power uncertain intervals and unit commitment. The proposed method is aiming to select the optimal wind power uncertain intervals and achieve the optimal trade-off between economics and reliability in power system operation. An interval UC considering the costs of expected energy not served (EENS) and expected wind power curtailment (EWC) is modeled. Then, a reformulation and linearization method is proposed, transforming the model to a MILP problem. Numerical studies on a six-bus system and the modified IEEE 118-bus system illustrate the effectiveness of the proposed model.