分时电价下考虑需求响应的微电网经济调度方法

为了实现微电网发电侧和用户侧双赢,提出一种考虑需求响应的孤岛微电网多目标经济调度模型。该模型在分时电价机制下引入需求响应,构建含用电效用和用电成本的负荷侧效益目标函数,同时,建立微电网发电侧成本最小目标函数。基于上述目标函数,通过调整使得微型燃气轮机的增量成本一致,实现微电网发电总成本最小。同时,根据分时电价调节可调负载的最优接入量,使得用户侧总收益在每个时段达到最大。为了验证模型的有效性,建立孤岛微电网仿真平台对需求响应的效果进行测试。仿真结果表明:所提出的经济调度模型能够在实现发电侧成本最小化的同时,实现负荷侧效益的最大化;在分时电价机制下引入需求响应后,用户侧效益提高了104%。

Demand response economic dispatch method for microgrid based on the time-of-use rate

To achieve a win-win situation on both generation side and customer side, a multi-objective economic dispatch model of islanded microgrid based on demand response is proposed. The model introduces demand response under the time-of-use rate mechanism. The consumers'' profit objectives consisting of consumption utility function and consumption fee function and the generation cost objectives are both constructed. Based on the above objectives, the minimization of generation cost is achieved by adjusting the incremental cost of each micro-turbine to the same, while the consumers'' profit is maximized by adjusting the optimal participant amount of flexible load. To testify the feasibility of the proposed model, a simulation platform is established to evaluate the performance of the model with demand response. The results show that the proposed economic dispatch model can maximize the consumers'' profit while minimizing the generation cost. The consumers'' profit with DR(demand response) is improved by 104% under time-of-use rate mechanism.