微网光伏储能发电并网系统特性研究
Characteristics of Grid-Connected Microgrid PV Energy Storage Power System
刘艳敏 1王建军 1丁雷青 1吴季浩 1高敬贝 1周毓颖1
作者信息
- 1. 国网上海市电力公司培训中心,上海200438
- 折叠
摘要
针对分布式电源存在的若干问题,提出了具有储能双向变流功能的光伏并网系统拓扑结构,并对光伏电池组数学模型和Bi Buck-Boost双向变流器工作原理进行理论推导和分析,借助Matlab/Simulink工具,进行系统控制算法的仿真.通过控制储能双向变流器电感电流值的大小与方向,实现了蓄电池定功率的充放电,完成了并网功率的吸收与释放,减小分布式电源其对大电网的冲击.最后在2 kW的光伏储能并网系统实验平台上进行了最大功率跟踪算法的试验验证,实现了95％转换效率和单位功率因数并网运行.
Abstract
In view of the problems in distributed generation,this paper proposes the photovoltaic grid-connected system topology with the function of the energy storage bidirectional converter,and analyzes the working principle of the mathematical model for photovoltaic battery and Bi Buck-Boost two-way theoretical derivation.With the Matlab and Simulink tools,we conduct system control algorithm simulation.By controlling the size and the direction of the energy storage bidirectional converter's inductance values and current values,we achieve the rated power of the battery charge and discharge,complete the grid power's absorption and release,and reduce the impact of the distributed power on grid.Finally the maximum power point tracking algorithm was tested on the experimental platform for 2 kW photovoltaic energy storage grid-connected system,realizing the 95％ conversion efficiency and unit power factor parallel operation.
关键词
微电网/光伏—储能发电/双向Bi/Buck-Boost电路/最大功率追踪Key words
microgrid/PV power generation/Bi Buck-Boost two-way circuit/maximum power point tracking引用本文复制引用
出版年
2014
NETL
NSTL
维普
万方数据