计及不同主体的配电网-微电网日前联合优化调度方法

Unified Day-ahead Scheduling Method for Distribution Network and Microgrids Considering Different Entities

为了实现不同主体间利益的合理分配,文章提出了一种配电网–微电网日前联合优化调度方法。首先,在考虑配电网运营商(distribution network operator,DNO)与微电网(microgrid,MG)等不同主体的条件下,分别构建了其优化调度模型。其中,DNO的调度目标是收益最大化,微电网的调度目标是运行成本最小化。随后,基于博弈论构建了配电网-微电网日前联合优化调度方法,并采用KKT(Karush-Kuhn-Tucke)方法对上述问题进行求解,从而获得纳什均衡点(Nash equilibrium,NE)。算例结果表明,日前优化调度方案能够满足DNO与微电网的运行约束,同时有效平衡配电网与微电网的利益,实现DNO与微电网调度目标的最优化。

In order to achieve reasonable interest share among different entities,a unified day-ahead scheduling method for distribution network-microgrids is proposed in this paper.Firstly,the scheduling models of distribution network operator(DNO)and microgrids(MGs)are developed respectively.The operational objective of the DNO is trading profit(TP)maximization and the operational objective of the MGs are operation cost(OC)minimization.Secondly,a unified day-ahead scheduling method for distribution network and microgrids are developed based on the game theory.The Karush–Kuhn–Tucker(KKT)method is utilized to achieve the Nash Equilibrium(NE)point.Numerical results show that the proposed method is able to satisfy the operation constraints of DNO and MGs.Meanwhile,different interest of DNO and MGs are balanced simultaneously,which is helpful for the optimal operation for DNO and MGs.