A review of optimal allocation technologies for multi-type energy storage in distribution networks with high penetration of DPV

With the increasing trend of high penetration of intermittent distributed photovoltaics （DPV） into distribution networks， maintaining the safe and reliable operation of these networks faces a series of challenges， such as voltage violations and reverse overloads. Multi-type energy storage is a key solution to effectively address these issues. This paper reviews the problems caused by the high penetration of DPV into distribution networks and classifies multi-type energy storage based on storage media， summarizing their strengths and weaknesses. From the perspective of optimal allocation of grid-side energy storage under high DPV penetration， this paper analyzes optimal energy storage allocation models under different objectives， summarizes mainstream algorithms for solving these models， and reviews the current state of research on optimal energy storage allocation. Finally， the paper explores the development directions for energy storage.