考虑跟踪性能的混合储能系统的优化控制

Optimal control of hybrid energy storage system based on tracking performance

针对混合储能系统内部协调不合理,导致电池损耗严重及系统跟踪性能差的问题,提出一种功率动态分配策略。在混合储能功率分配过程中,引入跟踪性能指标及内部动态补偿方案,建立以混合储能总寿命衰减折算费用和跟踪性能为综合优化目标的模型。对于所建立的模型,采用粒子群算法进行求解,得到最优的滤波时间常数,从而实现调度功率在混合储能间的最优分配,提高系统的跟踪性能,延长混合储能的综合寿命。

In order to solve the problem of serious battery loss and poor system tracking performance caused by unreasonable internal coordination of hybrid energy storage,a dynamic power allocation strategy was proposed.In the process of power allocation for hybrid energy storage,tracking performance index and internal dynamic compensation scheme were introduced,and a comprehensive optimization model based on the total life attenuation conversion cost and tracking performance was established.For the established model,the particle swarm optimization algorithm was used to solve the problem,and the optimal filtering time constant was obtained,so that the optimal allocation of dispatching power between the two kinds of energy storage could be realized,then the tracking performance of the system could be improved,and the comprehensive life of hybrid energy storage could be prolonged.