电力系统保护与控制2023，Vol.51Issue(24)：111-120,10.DOI:10.19783/j.cnki.pspc.230516
分布储能直流微电网中多储能荷电均衡控制策略
Charge balance control strategy for multiple energy storage in a distributed energy storage DC microgrid
摘要
Abstract
For a distributed energy storage island DC microgrid system,an adaptive sag control strategy is proposed to solve the problems whereby traditional sag control strategy cannot achieve the balance of charge state,the power distribution is not accurate and the bus voltage drops.First,by combining the hyperbolic tangent function with the charged state,the range of sag coefficient is limited and adjusted quickly through the characteristics of the hyperbolic tangent function.Then,by adjusting the compensation amount,the voltage corresponding to the sag coefficient is equal,and the compensation strategy of power distribution is designed.Finally,the cable impedance is calculated and a secondary bus voltage compensation strategy is designed.Simulink simulation results show that the proposed control strategy can achieve the balance of the charged state and the precise distribution of power,and the bus voltage can be maintained at the rated value accurately.关键词
直流微电网/储能控制/荷电状态/功率分配/母线电压补偿Key words
DC microgrid/energy storage control/state of charge/power distribution/bus voltage compensation引用本文复制引用
陈勃旭,崔炜,陈宇,李兴广,吕品博..分布储能直流微电网中多储能荷电均衡控制策略[J].电力系统保护与控制,2023,51(24):111-120,10.基金项目
This work is supported by Jilin Science and Technology Development Project(No.20220203066SF). 吉林省科技发展计划项目资助(20220203066SF) （No.20220203066SF）
