风光互补系统中混合储能容量优化配置研究  

Research on optimal configuration of hybrid energy storage capacity for wind-solar generation system

作　　者：李瑞民 张新敬[1,2] 徐玉杰 孙雯雯[1,2] 周学志 郭丛 陈海生[1,2] LIRuimin;ZHANGXinjing;XU Yujie;SUN Wenwen;ZHOUXuezhi;GUO Cong;CHENHaisheng(Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《储能科学与技术》2019年第3期512-522,共11页Energy Storage Science and Technology

基　　金：国家重点研发计划(2017YFB0903605);国家自然科学基金项目(51676181);北京市科技新星项目(Z171100001117065);中国科学院国际合作局国际伙伴计划(182211KYSB20170029)

摘　　要：储能系统可以有效解决微电网中分布式可再生能源特别是风光互补发电的间歇性、波动性以及"源"与"荷"错位的问题。不同储能技术在响应时间、容量规模、技术成熟度及成本等方面各有特点,两种或多种储能技术耦合将可以更有效地满足用电系统的技术性和经济性的要求。针对电力用户对分布式可再生能源的利用情况,本文提出一种由压缩空气储能、锂电池和超级电容器组成的混合储能系统,建立了三种储能的数学模型,针对其不同的特性,提出了基于二次移动平均滤波的储能系统功率分配方法和基于连续性运行的容量优化配置方法。基于某个实际的用户负荷进行了案例分析,得到了混合储能系统的功率和容量配置结果,并分析了其运行特性。研究表明,在分布式可再生能源微电网中,多种储能技术耦合既能充分发挥每种储能的优势,又可以通过相互配合弥补各自的劣势,这对于可再生能源的充分利用和满足用电负荷的严苛需求具有重要的作用和意义,在分布式能源利用领域具有较好的工程应用前景。The energy storage system can effectively solve problem of intermittence, volatility and source-load misalignment of distributed renewable energy ,especially wind-solar generation in the micro- grid system. Different energy storage forms have their own characteristics in terms of response time, power and energy capacity, technological maturity and cost, etc. The hybridization of two or more types of energy storage technology will be a good solution to meet the technical and economic requirements of energy utilization system. In this paper, a hybrid energy storage system consisting of compressed air energy storage, lithium battery and supercapacitor is proposed, and mathematical modellings of three energy storage systems are established. For different characteristics, a power allocation method based on secondary moving average filtering and a capacity optimal allocation method based on continuous operation are proposed. Based on a practical customer load requirement, the power and capacity configuration results of the hybrid energy storage system are obtained, and the operational characteristics are analyzed. The research indicates that in the system of distributed renewable energy micro-grid, the coupling of multiple energy storage technologies can not only fully utilize the advantages of each type of energy storage, but also compensate for their respective disadvantages through mutual cooperation. That has an important role and significance of fully utilize renewable energy and satisfy demand of electric load, and has a good engineering application prospect in the field of distributed energy utilization.

关 键 词：可再生能源 混合储能 功率分配 容量配置 

分 类 号：TM61[电气工程—电力系统及自动化]