光伏发电系统并网运行的控制策略与仿真分析  

Analysis of control strategy and simulation of grid connected operation of photovoltaic system

作　　者：吴硕[1] 赵继忠[1] 

机构地区：[1]辽宁装备制造职业技术学院,沈阳110161

出　　处：《工业仪表与自动化装置》2015年第6期41-44,共4页Industrial Instrumentation & Automation

摘　　要：分析了光伏发电并网系统的结构,建立了光伏电池简化模型,采用降压升压装置和扰动占空比算法跟踪分布式电源的最大功率,对逆变器采用电流电压双环结构的控制策略。搭建了并网运行的系统仿真模型。仿真结果表明:并网逆变器输出的电流和大电网电流同频同相,动态响应快,能够较好地反映三相光伏并网系统运行的特性,具有一定理论价值。This paper analyzes the structure of photovoltaic grid connected system,established the simplified model of the photovoltaic battery,adopts buck boost device and disturbance duty ratio algorithm for tracking maximum power of distributed power. The inverter adopts double loop structure of current voltage control,and built the simulation model of grid connected operation. Simulation results show that the current output of the grid connected inverter and grid current with the same frequency and phase,fast response time,it can better reflect the characteristics of three- phase photovoltaic grid connected system operation,and has a certain theoretical value.

关 键 词：光伏发电 最大功率跟踪 控制策略 算法仿真 

分 类 号：TM76[电气工程—电力系统及自动化]