虚拟同步发电机的转子惯量自适应控制方法

CHENG Chong

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虚拟同步发电机的转子惯量自适应控制方法

更新时间：2025-08-13

- 虚拟同步发电机的转子惯量自适应控制方法
- Automation of Electric Power Systems Vol. 39, Issue 19, Pages: 82-89(2015)
- 作者机构：
  
  浙江大学电气工程学院,浙江省,杭州市,310027
- 作者简介：
- 基金信息：
- DOI：
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- Published：2015
- 稿件说明：
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CHENG Chong. [J]. Automation of electric power systems, 2015, 39(19): 82-89.
DOI：

CHENG Chong. [J]. Automation of electric power systems, 2015, 39(19): 82-89. DOI：

摘要

近年来

微电网作为一种可再生能源接入电网的有效载体

已受到越来越多的关注。微电网中的分布式电源大多需要通过逆变器实现并网和输出电能

然而传统的逆变器控制算法只考虑快速响应

并没有类似同步发电机的惯性特征

因而对电网冲击较大。针对该问题

在总结了虚拟同步发电机(VSG)支撑微电网稳定运行控制策略的基础上

结合同步发电机的功角曲线和转子惯量的物理意义

提出了一种自适应虚拟转子惯量的VSG控制算法

并通过对分布式电源小信号模型的分析

确定了自适应惯量系数的选取原则。最后

利用PSCAD／EMTDC仿真工具

分别在并网和离网运行模式下验证了所提算法的有效性。

Abstract

As an effective interface for renewable energy integration

microgrids have attracted more and more attention. Most of the distributed energy sources in the microgrid should be grid-connected by inverters

but unlike synchronous generators

traditional inverter control algorithms only consider the rapid response with no inertia. In order to solve this problem

the virtual synchronous generator (VSG) control strategy in support of the stable operation of microgrids is summarized. Then the VSG control algorithm of adaptive virtual rotor inertia is proposed by referring to the physical meaning of the synchronous generator rotor inertia and power angle curve. Following an analysis on the small-signal model for the VSG-oriented distributed generator

the selection principle of adaptive inertia coefficients is presented. Finally

the proposed algorithm is verified by simulation results based on a PSCAD/EMTDC microgrid model. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2011AA050204) and National Natural Science Foundation of China (No. 50907060).

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