储能科学与技术2018，Vol.7Issue(4)：726-731,6.DOI:10.12028/j.issn.2095-4239.2018.0054
一种适用于光伏并网混合储能系统的功率分配策略
A power allocation strategy of a hybrid energy storage system for a PV grid-connected system
摘要
Abstract
A battery-supercapacitor hybrid energy storage system (HESS) is applied to a PV grid-connected system to deal with fluctuation and intermittency of the PV microgrid to achieve smooth photovoltaic system power output, balance and improve grid power quality. Considering the upper limit of the battery power and the state of charge (SOC) of the supercapacitor, a power distribution strategy is proposed for the hybrid energy storage system. The strategy uses the SOC of the supercapacitor and the output of the power allocation unit as a reference value to design the hybrid energy storage system charge and discharge processes. The supercapacitor and the battery are connected to the 500 V DC bus using a Bi-direction DC/DC converter. The supercapacitor controls the DC bus voltage through a double closed-loop control strategy. The simulation results show that the proposed power allocation strategy can rationally distribute the power of the hybrid energy storage system, achieve the grid connection of unit power factor and stabilize the DC bus voltage.关键词
光伏发电/蓄电池/超级电容/荷电状态/功率分配策略Key words
photovoltaic power generation/ battery/ super capacitor/ state of charge/ power distribution strategy分类
信息技术与安全科学引用本文复制引用
米根锁,穆艳停..一种适用于光伏并网混合储能系统的功率分配策略[J].储能科学与技术,2018,7(4):726-731,6.基金项目
国家自然科学基金项目(51667013). （51667013）
