Research on Distributed Photovoltaic Grid Connection Modeling Based on RTDS

XU Biao; LONG Xuemei; YAN Yabing; DING Yu; OUYANG Zongshuai

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Research on Distributed Photovoltaic Grid Connection Modeling Based on RTDS

更新时间：2025-11-18

- Research on Distributed Photovoltaic Grid Connection Modeling Based on RTDS
- Vol. 42, Issue 3, Pages: 49-54(2022)
- 作者机构：
  
  1. 国网湖南省电力有限公司
  2. 国网湖南省电力有限公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM615
- Published：2022
- 稿件说明：
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XU Biao, LONG Xuemei, YAN Yabing, et al. Research on Distributed Photovoltaic Grid Connection Modeling Based on RTDS[J]. 2022, 42(3): 49-54.
DOI：

XU Biao, LONG Xuemei, YAN Yabing, et al. Research on Distributed Photovoltaic Grid Connection Modeling Based on RTDS[J]. 2022, 42(3): 49-54. DOI：

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。

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.

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