计及用户电价响应的微网和配电网联合调度运行模型

Joint dispatch operation model of microgrid and distribution network considering user response to electricity price

针对现阶段微网清洁能源接入率低、供能经济性差等问题,在考虑配电网高环境处理费用的前提下,构建计及用户主动电价响应,以用户综合购电成本和环境处理费用最低为优化目标的微网和配电网联合调度模型。利用基于信息熵理论建立的多目标评价体系对由非支配排序遗传算法(NSGA-Ⅱ)求得的非劣解进行综合评价,以获得最佳的运行方案。算例以南方沿海某智能小区电网为参考系统,设置了3种场景分析蓄电池、配电网接入对优化目标的影响,并将仿真结果与专家评价模式下的优化方案进行对比,结果验证了所提方法的有效性和实用性。

Aiming at the problems of low access rate of clean energy and poor energy supply economy of microgrid at present, a joint dispatch model of microgrid and distribution network considering the users＇ active price response is established on the premise of high environmental disposal costs of the distribution network, which takes the minimum users＇ total electricity purchasing costs and environmental disposal costs as its optimization objective. The non- inferior solutions obtained by the NSGA-Ⅱ （Nondominated Sorting Genetic Algorithm Ⅱ ） are evaluated comprehen- sively by the multi-objective evaluation system based on the information entropy theory to obtain the best operation scheme. A smart district grid in the southern coastal area is taken as an example to analyze the influences of the con- nection of battery and distribution network on the optimization objective in three given scenes, and simulative results verify the validity and practicality of the proposed method, compared with the optimal schemes in the expect evaluation mode.