基于机会约束的微电网混合整数规划优化调度

The Optimal Dispatching of Mixed Integer Programming Based on Opportunity Constraint of Microgrid

为解决微电网短期及超短期优化调度问题,考虑微电网运行过程中不确定因素的影响。以最小化微电网运行成本为目标,综合考虑功率平衡、机会约束等约束条件,提出了一种基于机会约束的微电网混合整数规划优化调度模型。针对模型中机会约束确定性转化问题,采用基于采样的机会约束条件确定性转化方法,将机会约束变为混合整数线性约束。同时,为了提高计算速度,将目标函数中的非线性函数进行分段线性化。算例结果表明,基于机会约束的微电网混合整数规划优化调度模型具有较好的可行性和有效性。

In order to solve the short-term and super-short-term optimal dispatching problems of microgrid,the influence of uncertain factors in the operation process of microgrid is taken into consideration.In order to minimize the operating cost of microgrid,a hybrid integer programming optimization dispatching model based on opportunity constraint is proposed in this paper,taking power balance,opportunity constraint and other constraints into comprehensive consideration.Aiming at the deterministic transformation of opportunity constraints in the model,a deterministic transformation method of opportunity constraints based on sampling is adopted to transform the opportunity constraints into mixed integer linear constraints.At the same time,in order to improve the calculation speed,the nonlinear function in the objective function is piecewise linearized.The results show that the hybrid integer programming optimization dispatching model based on opportunity constraint is feasible and effective.