高电压技术2018，Vol.44Issue(1)：160-168,9.DOI:10.13336/j.1003-6520.hve.20171227020
考虑蓄电池荷电状态的孤岛直流微网多源协调控制策略
Multi-source Coordinated Control Strategy Considering Battery's SOC for Islanded DC Microgrid
摘要
Abstract
For the purpose of avoiding deep charging and discharging of the battery in islanded DC microgrid so as to prolong its service life,and based on full consideration of the battery's state of charge (SOC),a multi-source coordinated control strategy including primary decentralized control and secondary centralized control for islanded DC microgrid is proposed.Primary decentralized control is used to realize autonomous coordinated operation of micro-sources considering battery's SOC.Under primary control,DC-bus voltage changes with SOC according to the segmented droop characteristics and when SOC is close to the limits,DC-bus voltage will rise or fall,which leads to new energy power generation curtailment or load shedding.In order to satisfy the strict requirements of DC-bus voltage under specified conditions,the droop curve of primary control is adjusted by secondary centralized control,which is used to eliminate the stable voltage deviation produced by primary control when SOC is close to the upper limit.Finally,an experimental hardware-in-the-loop simulation (HILS) system of wind-battery based islanded DC microgird is constructed.The experimental results show that the proposed multi-source coordinated control strategy can effectively avoid the battery's deep charging and discharging,and the quality of DC-bus voltage is modified.关键词
孤岛直流微网/蓄电池储能/荷电状态/分段下垂控制/多源协调控制/硬件在环Key words
islanded DC microgrid/battery energy storage/SOC/segmented droop control/multi-source coordinated control/hardware in the loop引用本文复制引用
王琛,孟建辉,王毅,李春来..考虑蓄电池荷电状态的孤岛直流微网多源协调控制策略[J].高电压技术,2018,44(1):160-168,9.基金项目
国家高技术研究发展计划(863计划)(2015AA050101) （863计划）
青海省光伏发电并网技术重点实验室(2015-Z J-Y24) （2015-Z J-Y24）
青海省光伏发电并网技术重点实验室开放课题(52280715001F).Project supported by National High-tech Research and Development Program of China (863 Program)(2015AA050101),Qinghai Province Key Laboratory of Photovoltaic Grid Connected Power Generation Technology(2015-ZJ-Y24),Open Project Program of Qinghai Province Key Laboratory of Photovoltaic Grid Connected Power Generation Technology(52280715001F). （52280715001F）
