多微电网系统的合作博弈模型及其优化调度策略

Cooperative Game Model and Optimal Dispatch Strategy of Multi-microgrid System

该文将多微电网系统中的所有微电网设为地位对等的能量管理实体,赋予每个微电网与其他微电网功率交易的定价权和交易电量决定权,构建不含中央管理单元的分布式能量管理架构。提出关于电价和功率交易量的约束协议,建立多微电网系统的合作博弈模型,并提出效益妥协算法,使所有微电网通过效益妥协的方式接受彼此制定的能量调度策略,以统一多微电网系统的能量管理方案。结果表明,按照约束协议找到的电价策略是唯一不损害所有微电网利益的电价集合,基于该电价策略执行效益妥协过程得到的微电网间的功率交易方案是在兼顾所有微电网利益的前提下,唯一使所有微电网都接受的能量调度方案,验证了该文建立的合作博弈模型可有效实现多微电网系统的分布式能量管理。

All microgrids in multi-microgrid(MMG)systems are set as energy management entities with equal status,and each of them could set the electricity transactive price and determine the electricity amount of trading with other microgrids.The distributed energy management architecture without a central management entity was constructed.The constraint protocols on the electricity price and electricity amount were proposed.The cooperative game model of MMG system was established and a benefit compromise algorithm was proposed to make all microgrids accept each other’s energy dispatching strategy by means of benefit compromise.Then,the energy management scheme of MMG system was unified.The results show that the electricity price strategy established in accordance with the constraint protocols is the only price set that does not harm the benefits of all microgrids.Based on this price strategy,the power trading scheme between microgrids obtained by implementing the benefit compromise process is the only energy dispatching scheme accepted by all microgrids on the premise of considering the interests of all microgrids,proving that the cooperative game model can effectively realize distributed energy management of MMG systems.