光伏发电系统暂态特性仿真  

Simulation for transient characteristics of photovoltaic power generation system

作　　者：齐仁龙[1] 朱小会[1] 张庆辉[2] QI Ren-long ZHU Xiao-hui ZHANG Qing-hui(School of Electrical Engineering, Zhengzhou Institute of Science and Technology, Zhengzhou 450064, China School of Information Science and Engieering, Henan University of Technology, Zhengzhou 450001, China)

机构地区：[1]郑州科技学院电气工程学院,郑州450064 [2]河南工业大学信息科学与工程学院,郑州450001

出　　处：《沈阳工业大学学报》2017年第2期121-126,共6页Journal of Shenyang University of Technology

基　　金：河南省2015年科技攻关计划资助项目(152102210002)

摘　　要：针对光伏发电系统暂态稳定性差的问题,在PSCAD/EMTDC环境中建立了光伏发电系统的电磁暂态仿真模型,并基于该模型分析了三相短路故障和光照强度跃变等条件下光伏发电系统的暂态响应特性.研究光伏发电系统的物理模型,并建立由光伏阵列、最大功率跟踪模块、升压电路和三相并网逆变器等组成的光伏发电系统动态仿真模型.仿真对比分析了不同运行条件下的光伏逆变器输出有功功率、电压以及电流的暂态特性,结果表明逆变器输出功率和电流会随着光照强度变化而平滑地改变,短路故障则会引起电压跌落和瞬态过电流.In order to solve the poor transient stability of photovoltaic power generation system,the electromagnetic transient simulation model for photovoltaic power generation system was established in the PSCAD / EMTDC environment. Based on the proposed model,the transient response characteristics of photovoltaic power generation system under the condition of three-phase short circuit faults and light intensity jump were analyzed. The physical model for photovoltaic power generation system was studied,and the dynamic simulation model for photovoltaic power generation system composed of photovoltaic array,maximum power tracking module, boost circuit and three-phase grid connected inverter was established. The transient characteristics of output active power,voltage and current of photovoltaic inverter under different operating conditions were compared and analyzed through the simulation. The results showthat the output power and current of the inverter will change smoothly with the change of light intensity,while the short circuit faults will cause the voltage sags and transient over current.

关 键 词：光伏发电 稳定 PSCAD/EMTDC环境 仿真模型 三相短路 光照强度跃变 暂态特性 物理模型 

分 类 号：TM615[电气工程—电力系统及自动化]