一种平抑微网联络线功率波动的电池及虚拟储能协调控制策略
A Coordination Control Strategy of Battery and Virtual Energy Storage to Smooth the Micro-grid Tie-line Power Fluctuations
摘要
Abstract
A coordination control strategy of battery and virtual energy storage based on demand response (DR) to smooth the micro-grid (MG) tie-line power flow fluctuations was proposed in this paper. Firstly, an index-priority-list (IPL) was presented to construct the virtual energy storage model with considering the group characteristics of the thermostatically-controlled loads. Similar to the state of charge (SOC) in battery system, a state indexCT was defined for the virtual energy storage system to describe its regulation capability. Secondly, a coordination control strategy to smooth the MG power flow fluctuations based on Butterworth filter with varying time constants was proposed. Two filters were introduced for virtual energy storage and battery system respectively. Their time constants can be automatically coordinated and adjusted so that virtual energy storage is used to smooth the high-frequency (fast) fluctuations, while battery system is used to balance low-frequency (slow) fluctuations.With the coordination strategy, MG tie-line power flow fluctuations can be effectively smoothed. At the same time, the comfort of the customers participating in the demand response can be maintained. The charging times of battery can be reduced and the over charging/discharging of battery can be avoided, so the battery life can be prolonged.关键词
需求响应/虚拟储能/标识优先列表/微网联络线功率波动/荷电状态/温控负荷Key words
demand response/virtual energy storage/index priority list (IPL)/tie-line power flow fluctuations of micro grid/state of charge (SOC)/thermostatically-controlled load (TCL)分类
信息技术与安全科学引用本文复制引用
王冉,王丹,贾宏杰,杨占勇,戚野白,范孟华,盛万兴,侯立睿..一种平抑微网联络线功率波动的电池及虚拟储能协调控制策略[J].中国电机工程学报,2015,35(20):5124-5134,后插25,12.基金项目
国家863高技术研究发展计划(2014AA051901) （2014AA051901）
国家自然科学基金项目(51377117,51407125,51361135704) （51377117,51407125,51361135704）
国家电网公司基础性前瞻性科技项目——"能源互联网技术架构研究" （）
国家电网公司科技项目(EPRIPDKJ[2012]3185) （EPRIPDKJ[2012]3185）
国家社科基金重大项目(12&ZD208).The National High Technology Research and Development of China 863 Program (2014AA051901) （12&ZD208）
Project Supported by National Natural Science Foundation of China (51377117, 51407125, 51361135704) （51377117, 51407125, 51361135704）
Fundamental and Perspective Project of State Grid Corporation of China- "Study on the Energy Internet Technology Framework" （）
Science and Technology Project of the State Grid Corporation of China (EPRIPDKJ [2012] 3185) （EPRIPDKJ [2012] 3185）
National Social Science Foundation of China under Grant (12&ZD208). （12&ZD208）
