基于虚拟同步发电机的微网运行模式无缝切换控制策略

SHI Rongliang

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基于虚拟同步发电机的微网运行模式无缝切换控制策略

更新时间：2025-08-13

- 基于虚拟同步发电机的微网运行模式无缝切换控制策略
- Automation of Electric Power Systems Vol. 40, Issue 10, Pages: 16-23(2016)
- 作者机构：
  
  合肥工业大学电气与自动化工程学院,安徽省,合肥市,230009
- 作者简介：
- 基金信息：
- DOI：
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- Published：2016
- 稿件说明：
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SHI Rongliang. [J]. Automation of electric power systems, 2016, 40(10): 16-23.
DOI：

SHI Rongliang. [J]. Automation of electric power systems, 2016, 40(10): 16-23. DOI：

摘要

对于采用对等控制策略的微网系统，如何实现孤岛/并网运行模式间的无缝切换是一项亟待克服的技术难点。文中首先介绍微网系统的基本结构与工作模式，针对微网孤岛与并网运行模式的特点，提出一种满足微网孤岛/并网切换的虚拟同步发电机(VSG)控制策略。其次，为了适应微网的并网运行特性，提出一种基于控制器状态跟随的并行切换方法，即PQ控制的电流源模式和VSG控制的电压源模式的相位和电流指令都实时跟踪，为PQ/VSG控制模式间的无缝切换奠定基础。最后，建立微网系统的仿真模型和实验平台，共同验证了所提控制策略和并行切换方法的有效性。

Abstract

For the microgrid system with peer-peer control strategies

seamless switching between islanded and grid-connected operation modes remains a technical barrier need to be solved urgently. This paper introduces the basic structure and the operating mode of a microgrid. According to the characteristics of the islanded and the grid-connected operation modes

a virtual synchronous generator(VSG)control strategy is proposed to switch the operation modes. Besides

a paralleled switching method based on the controller state following is proposed to meet grid-connected operation characteristics of the microgrid. Both phase and current instructions of the current-source mode based on PQ control and the voltage-source mode based on VSG control are tracked in real time

and it can lay a foundation for seamless switching between the two modes. Finally

both simulation and experimental platforms are established. They verify the effectiveness of the proposed strategies.This work is supported by National High Technology Research and Development Program of China(863 Program)(No. 2015AA050607).

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