基于电力电子系统的配电馈线的简化单相光伏发电机模型

M. A. Mendes, M. C. Vargas, O. E. Batista, Yongheng Yang, F. Blaabjerg
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引用次数: 8

摘要

由于基于逆变器的资源(IBR)如太阳能光伏(PV)的集成日益增加,电力系统仿真与分析馈线行为变得更加相关。然而,基于动态和开关级光伏发电(DSLPVG)模型的仿真由于其多变量依赖性而复杂且耗时。因此,本文介绍了一种简单的单相并网光伏发电机模型。该简化的PV发电机(SPVG)模型仅依赖于PV发电机的有功输出功率、功率因数和共耦合点(PCC)的电压。该系统采用Simulink/MATLAB开发,采用单相馈线。通过比较SPVG和DSLPVG模型在馈线行为、精度和模拟时间方面的差异,进行了仿真来验证所提出的模型。SPVG模型的实现比DSLPVG模型简单,馈线行为相似,仿真速度快了近120倍。使用SPVG模型,可以对许多PV发电机进行快速仿真,如电力系统保护研究,同时保持良好的准确性。此外,该模型可以很容易地扩展到其他仿真软件包中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simplified Single-phase PV Generator Model for Distribution Feeders With High Penetration of Power Electronics-based Systems
Power systems simulations become more relevant to analyze the feeder behavior due to the increasing integration of inverter-based resources (IBR), like solar photovoltaic (PV). However, simulations based on dynamic and switching-level PV generator (DSLPVG) models are complicated to implement, due to the multi-variable dependence, and they are time-consuming. Thus, this paper introduces a simple single-phase grid-connected PV generator model. This simplified PV generator (SPVG) model is only dependent of the PV generator active output power, power factor, and the voltage at the point of common coupling (PCC). It is developed in Simulink/MATLAB with a single-phase feeder. Simulations are conducted to verify the proposed model by comparing SPVG with DSLPVG models in terms of feeder behavior, accuracy and time elapsed during simulations. The implementation of the SPVG model is easier than the DSLPVG, the feeder behavior is similar, and the simulations are almost 120 times faster. With the SPVG model, fast simulations with many PV generators may be done, like power system protection studies, while maintaining good accuracy. Furthermore, the model can be easily extended to other simulation software packages.
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