湖南电力 ›› 2022, Vol. 42 ›› Issue (3): 49-54.doi: 10.3969/j.issn.1008-0198.2022.03.009

• 研究与试验 • 上一篇    下一篇

基于RTDS的分布式光伏并网建模研究

徐彪1, 龙雪梅2, 严亚兵2, 丁禹2, 欧阳宗帅2   

  1. 1.国网湖南省电力有限公司,湖南 长沙 410004;
    2.国网湖南省电力有限公司电力科学研究院,湖南 长沙 410007
  • 收稿日期:2022-01-10 修回日期:2022-01-20 出版日期:2022-06-25 发布日期:2025-08-05
  • 作者简介:徐彪(1987),男,内蒙古赤峰市敖汉旗人,硕士,工程师,主要从事继电保护技术及企业人力资源管理。
  • 基金资助:
    国网湖南省电力有限公司科技项目(5216A5210036)

Research on Distributed Photovoltaic Grid Connection Modeling Based on RTDS

XU Biao1, LONG Xuemei2, YAN Yabing2, DING Yu2, OUYANG Zongshuai2   

  1. 1. State Grid Hunan Electric Power Company Limited, Changsha 410004, China;
    2. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, China
  • Received:2022-01-10 Revised:2022-01-20 Online:2022-06-25 Published:2025-08-05

摘要: 随着分布式光伏大规模发展,需要加强分布式光伏并网的建模研究。首先,基于RTDS实时仿真平台建立光伏列阵、并网逆变器、滤波器和隔离变压器等光伏并网模型。其次,在电网三相对称时,采用双环控制结构搭建光伏控制系统模型。然后,考虑电网不对称故障,建立基于双同步旋转坐标系的光伏负序控制模型。最后,通过仿真证明了所建模型在电网发生故障时光伏具有良好性能,验证了光伏负序控制可以有效降低负序电流,减小电流畸变。

关键词: 分布式光伏, RTDS, 不对称故障, 负序控制

Abstract: With the large-scale development of distributed photovoltaic, it is necessary to strengthen the modeling research of distributed photovoltaic grid connection. Firstly, based on RTDS real-time simulation platform, photovoltaic grid connected models such as photovoltaic array, grid connected inverter, filter and isolation transformer are established. Secondly, when the power grid is three-phase symmetrical, the double loop control structure is used to build the photovoltaic control system model. Then, considering the asymmetric fault of power grid, a photovoltaic negative sequence control model based on double synchronous rotating coordinate system is established. Finally, the simulation results show that the proposed model also has good performance in case of power grid failure, and it is verified that photovoltaic negative sequence control can effectively reduce negative sequence current and current distortion.

Key words: distributed photovoltaic, RTDS, asymmetric fault, negative sequence control

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