计及需求响应及抽水蓄能的含风电系统鲁棒机组组合

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

针对大规模风电接入电力系统带来的消纳问题,提出一种考虑需求响应及抽水蓄能的鲁棒机组组合优化方法。一方面,建立计及需求响应和抽水蓄能机组运行特性的数学模型,协同优化提高系统运行的灵活性;另一方面,采用考虑不确定预算的风电功率不确定集合描述风电随机波动特性。综合考虑系统运行约束及鲁棒可行性约束,采用基于仿射补偿机制的再调度策略,以系统运行成本最小为目标构建鲁棒机组组合模型,同时根据对偶原理将构建的鲁棒优化模型转化为确定性的数学规划问题进行优化求解。在改进的IEEE 39节点系统中进行算例仿真,验证了所提方法的正确性和有效性。

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.