基于RTDS的光伏并网系统实时仿真平台研究

Real-time simulation study of photovoltaic grid-connected system by RTDS

提出了一种新型的光伏并网系统实时仿真方法:它基于实际天气情况包括日照强度和太阳能电池的表面温度,在实时数字仿真器(RTDS)的软件部分RSCAD仿真平台中搭建实时仿真模型,对光伏并网系统进行仿真研究。通过编写script文件导入大量实际的光照强度和温度数据,研究在RTDS平台上进行模拟室外光伏的实时仿真实验。该实时数字仿真平台不仅克服了实物系统受光照与温度信号现实条件的限制,而且可以兼顾硬件环境对实验的影响,为实验室内进行光伏系统实验提供了一个良好的平台。仿真结果不仅表明此仿真方法的可行性,而且提供了更多更详细的关于光伏并网系统动态特性的实时信息。

The paper proposes a novel real-time simulation method for PV grid-connected systems under real weather conditions including irradiation and surface temperature of solar cell. The real-time simulation model based on the RSCAD software platform of RTDS is built. With a large amount of practical PV data importing through writing in the script file, the outdoor PV system simulation can be realized in RTDS. It neglects the limits of real conditions of the PV experiment in the laboratory. At the same time, it takes the hardware environment into account to fetch up the shortage of all-digital simulation platform. It provides a good simulation platform for the laboratory photovoltaic research. The simulation results show that RTDS can not only accurately implement and validate the PV grid-connected system, but also provide more detailed real-time information about state variables.