摘要
针对微电网中光伏出力波动和负载突变等造成的母线电压波动问题,将两种储能方式进行组合并应用到光伏微电网中,提出一种在平抑微电网内功率波动的基础上,考虑储能设备荷电状态的改进功率调整策略。通过储能系统的充放电控制实现对微电网内波动功率的吸收和补偿并通过并网变换器控制使微电网并网运行。在软件中对搭建的微电网模型进行了仿真,仿真结果验证了所提出的控制方法对于稳定微电网母线电压和并网功率的有效性。
In order to solve the problem of bus voltage fluctuations caused by photovoltaic output and load power fluctuations in the microgrid,two energy storage methods are combined and applied to photovoltaic microgrids in this paper,and an improved power adjustment strategy based on the state of charge of energy storage equipment is proposed on the basis of suppressing system power fluctuations.The absorption and compensation of fluctuating power in the microgrid system are realized through the charge and discharge control of the energy storage system,and the microgrid is connected to the grid through the control of the grid-connected converter.The microgrid model is simulated in the software,and the simulation results verify the effectiveness of the proposed control method for stabilizing the system bus voltage and grid-connected power.
作者
缑新科
杨财
GOU Xinke;YANG Cai(College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050)
出处
《计算机与数字工程》
2023年第2期308-313,共6页
Computer & Digital Engineering
关键词
混合储能
光伏发电
微电网
协调控制
hybrid energy storage system
photovoltaic
microgrid
coordination control
