Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid

XING Pengxiang; FU Lijun; WANG Gang; WANG Yi; WU You

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Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid

更新时间：2025-12-08

- Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid
- Vol. 44, Issue 7, Pages: 2346-2353(2018)
- 作者机构：
  
  1. 武汉大学电气工程学院
  2. 海军工程大学舰船综合电力技术国防科技重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 July 2018，
  
  Published：2018
- 稿件说明：
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XING Pengxiang, FU Lijun, WANG Gang, et al. Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid[J]. 2018, 44(7): 2346-2353.
DOI：

XING Pengxiang, FU Lijun, WANG Gang, et al. Control Strategy of Virtual Synchronous Generator with Enhanced Inertia for Improving Dynamic Frequency Response of Microgrid[J]. 2018, 44(7): 2346-2353. DOI：

摘要

为充分利用虚拟同步发电机（VSG）的调频潜力

提出一种适用于交直流混合微电网的虚拟同步发电机强化惯量控制方法

即在虚拟同步发电机的基本控制结构上增加与系统频率偏差量相关的辅助调频控制环节

使之可以在负荷扰动后提供更多的调频功率

进一步改善系统的频率响应特性。基于Matlab/Simulink构建了以虚拟同步发电机为接口的交直流混合微电网模型

并在实验室研制了一台实验样机对所提控制方法进行验证。仿真和实验结果表明

与常规控制方法相比

强化惯量控制在给定的控制参数下可以使相同负荷扰动后的系统频率偏差进一步减小约25%

从而证明了所提控制方法的有效性。

Abstract

In order to make full use of the virtual synchronous generator（VSG） in frequency modulation

we propose an enhanced VSG for AC/DC hybrid microgrid. The proposed method adds an auxiliary power control loop that is associated with the frequency deviation into the basic VSG control structure

enabling it to provide more power to participate in system frequency modulation after load disturbance and to further reduce the frequency deviation. For the purpose of verification

an AC/DC hybrid microgrid model is built in Matlab/Simulink software

in which the VSG is used as the interface inverter

and a VSG prototype is developed in the laboratory. Simulations and experiments indicate that

compared to the conventional VSG

the enhanced VSG with the given control parameters can further reduce the frequency deviation by about 25% after the same load disturbance

which proved the proposed method to be feasible and effective.

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