中国电机工程学报2013，Vol.33Issue(16)：70-77,前插10,9.
多级钒电池储能系统的功率优化分配及控制策略
Power Optimization Distribution and Control Strategies of Multistage Vanadium Redox Flow Battery Energy Storage Systems
摘要
Abstract
In order to make better use of energy storage system to reduce the fluctuation of active power for large-scale wind farm,this paper proposes the optimization power distribution control strategies of the multistage vanadium redox flow battery (VRB) storage.Firstly,based on the equivalent circuit of a VRB and by using the interface of the DC/AC converter cascade multiple bi-directional DC/DC converter,a vector control strategy of DC/AC converter is presented to keep the stable DC bus voltage,and a double closed loop control strategy of DC/DC converter is established to switch charge-discharge style as a constraint of state of charge (SOC) on a single VRB.Secondly,by taking SOC value of each battery as priority target selection of output power,and by using the limit of external terminal voltage as the constraint conditions for battery safety charging and discharging,an optimization power distribution strategy of the multistage VRB energy storage is proposed.Finally,as an example of two-stage VRB energy storage system with different SOC values,the smoothing results of wind power fluctuation and the operation performances of charge-discharge on every VRB unit are simulated under the wind speed variation,and the simulation results are compared by using the average distribution strategy of active power.the comparative results have shown that the proposed power optimization distribution control strategies for VRB storage system could better smooth wind power fluctuation,but also could further reduce the charging and discharging times of single VRB,and ensure the battery work in the more safe operation region.关键词
风力发电/功率波动/储能/全钒液流电池/充放电控制Key words
wind power/ power fluctuation/ energy storage/ vanadium redox flow battery/ charge-discharge control分类
信息技术与安全科学引用本文复制引用
李辉,付博,杨超,赵斌,唐显虎..多级钒电池储能系统的功率优化分配及控制策略[J].中国电机工程学报,2013,33(16):70-77,前插10,9.基金项目
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512710101) （2007DA10512710101）
新世纪优秀人才支持计划资助项目(NCET-10-0878) （NCET-10-0878）
中央高校基本科研业务费专项(CDJZR12150074):国家国际科技合作专项(2013DFG61520) （CDJZR12150074）
Project Supported by Foundation of State Key Laboratory of Power Transmission Equipment & System Security and New Technology (2007DA10512710101) （2007DA10512710101）
Program for New Century Excellent Talents in University (NCET-10-0878) （NCET-10-0878）
The Fundamental Research Funds for the Central Universities (CDJZR12150074) （CDJZR12150074）
International Science Technology Cooperation Program of China (2013DFG61520). （2013DFG61520）
