主动配电网的源-网-荷多层博弈经济调度策略

考虑到主动配电网具有多级管控的特点，提出了一种基于博弈论的源-网-荷多层博弈经济调度方法。为协调微网、配网和负荷的关系，将调度策略划分为三层，分别为微网与配网之间的合作博弈、配网与负荷之间的合作博弈以及负荷之间的非合作博弈。微网与配网的相互备用构成其合作关系，同时最优化可平移负荷使负荷之间的博弈达到纳什均衡，并引入顺序变量描述调度优先级。建立了以发电运行成本最小、网损最小和电压偏移合格率最高为目标的多目标优化调度模型，运用综合定权法将其化为单目标，并采用改进微分进化算法对其求解。算例证明，所提方法能够提高主动配电网对可再生能源的消纳能力，提升系统经济性。

Economic dispatch strategy of active distribution network based on source-network-load multi-layer game

Taking into account the characteristics of multi-level management in active distribution network, this paper proposes an economic scheduling method of source-network-load multi-layer game based on game theory. In the active distribution network with multi-microgrids, in order to coordinate the relationship among the microgrids, distribution network and load, scheduling strategy is divided into three layers, which includes a cooperative game between microgrid and distribution network, a cooperative game between distribution network and a non-cooperative game between load and load respectively. The mutual reserve between the microgrid and the distribution network makes their cooperation be formed. The optimization of translational load can make the game among the load reach the Nash equilibrium. And the order variable is introduced to describe the scheduling priority. The multi-objective optimization scheduling model is established, which takes the minimum generation cost, minimum network loss and the maximum voltage deviation as the objectives. It is translated into a single objective based comprehensive weighting method, and the improved differential evolution algorithm is used to solve the problem. An example shows that the proposed method can improve the capacity of active distribution network to consume the renewable energy and the economy of system. This work is supported by National High-tech R & D Program of China (863 Program) (No. 2015AA0501022).