基于共享储能的主动配电网有功优化研究

STUDY ON ACTIVE POWER OPTIMIZATION IN ACTIVE DISTRIBUTION NETWORKS BASED ON SHARED ENERGY STORAGE

考虑到主动配电网的有功网损主要来自支路间电阻的损耗,在辐射运行状态下,通常为满足后续节点的功率平衡,会出现靠前支路的有功损耗增加等问题,为解决这些问题,提出基于共享储能的节点间能量共享策略,在此基础上构建含“风-光-气-储”的主动配电网有功优化调度模型。模型以主动配电网的日总有功网损最小为目标函数,采用融合前推回代法的改进均衡优化算法进行求解分析,并与设定的场景进行对比实验。仿真结果验证了所提策略和方法的有效性,共享策略和优化算法能优化网损,改善电压水平,提高电能质量和分布式可再生能源的消纳比例。

Considering that the active power loss in an active distribution network primarily arises from resistive losses between branches and the phenomenon of increased active power loss in upstream branches to fulfill power balance requirements for subsequent nodes under a radial operating state,a node-to-node energy sharing strategy based on shared energy storage is proposed.Building upon this strategy,an active distribution network active optimization and scheduling model is developed,incorporating“wind-solar-gasstorage”components.The model aims to minimize the daily total active power loss in the active distribution network,employing an improved equilibrium optimization algorithm that combines forward-backward substitution.Comparative analysis is conducted with predefined scenarios.Simulation results validate the effectiveness of the proposed strategy and methodology,which not only optimize power loss and enhance voltage levels but also improve the quality of electrical energy,increase the integration proportion of distributed renewable energy,enhance the resilience and adaptability of the power system.