考虑需求响应的互联交直流混合微电网的分布式经济调度模型

A distributed economic dispatching model for networked hybrid AC/DC microgrids considering demand response

交直流混合微网能够高效集成分布式电源和柔性负荷,开放共享的互联系统能够通过功率共享机制进一步提高多微网的可靠性和经济性。提出了考虑需求响应的互联交直流混合微电网的分布式经济调度模型。对于单个微网,建立了考虑需求响应的优化模型来降低自身的运营成本,并通过添加备用容量约束来应对微网中的不确定性。对于整个互联系统,直流网络通过协调各微网的边界信息来优化潮流分布,降低网损。整个优化问题以分布式的方式进行求解,微网内部的负荷资源被充分协调,各微网仅需提供有限的边界信息,用户隐私被充分保护。算例结果证明了所提调度模型的有效性。

Hybrid AC/DC microgrids can efficiently integrate distributed generation and flexible load,and the open and shared interconnected system can further improve the reliability and economy of multiple microgrids through the power sharing mechanism.This paper proposes a distributed economic dispatching model for networked hybrid AC/DC microgrids considering demand response.For a single microgrid,an optimization model considering demand response is established to reduce its operation cost,and reserve capacity constraints are added to deal with the uncertainty in the microgrid.For the interconnected system,the DC network optimizes power flow distribution to reduce network losses by coordinating the boundary information of each microgrid.The whole optimization problem is solved in a distributed manner,in which the load resources are fully coordinated.Each microgrid only needs to provide limited boundary information,which fully protects the user privacy.The simulation results show the effectiveness of the proposed dispatching model.