基于模糊逻辑的光伏微网智能运行控制方法研究  

Research on intelligent operation control method of photovoltaic microgrid based on fuzzy logic

作　　者：蒋德玉 张恒 林刚 王东阳 主晓琨 JIANG Deyu;ZHANG Heng;LIN Gang;WANG Dongyang;ZHU Xiaokun(Linyi Power Supply Company of State Grid Shandong Electric Power Company,Linyi 276000,China)

机构地区：[1]国网山东省电力公司临沂供电公司,山东临沂276000

出　　处：《电子设计工程》2024年第14期121-124,129,共5页Electronic Design Engineering

基　　金：国网山东省电力公司科研项目(A144-300009601-00007)。

摘　　要：针对光伏微网系统寿命短、功率尺寸有限、效率低、最大功率点测量困难等缺点,文中提出了一种基于模糊逻辑的光伏微网智能运行控制方法。该方法从光伏电池和DC-DC交换器的模型建立入手,对光伏微网系统的最大功率点进行了详细的反步控制方法计算,从而生成了最优占空比。采用模糊逻辑算法对PID控制器产生的增益进行了调整,通过对PID经典控制器和PID模糊控制器进行的对比仿真实验结果表明,所提出的控制方法在光伏系统发电功率的精度和振荡方面均具有更大的优势,且储能系统的输出效率达到了95%。Aiming at the shortcomings of photovoltaic micro grid system,such as short life,limited power size,low efficiency,and difficult measurement of maximum power point,this paper proposes an intelligent operation control method of photovoltaic microgrid based on fuzzy logic.This method starts with the establishment of the model of photovoltaic cells and DC-DC exchanger,and calculates the maximum power point of photovoltaic microgrid system in detail by using the reverse step control method,so as to generate the optimal duty cycle.Fuzzy logic algorithm is used to adjust the gain generated by the PID controller.The comparative simulation results of classical PID controller and PID fuzzy controller show that the proposed control method has greater advantages in the accuracy and oscillation of photovoltaic system power generation,and the output efficiency of the energy storage system reaches 95%.

关 键 词：光伏系统 模糊逻辑 PID控制 最大功率点跟踪 PID-模糊控制器 

分 类 号：TM615[电气工程—电力系统及自动化] TN929.5[电子电信—通信与信息系统]