摘要
为了解决电力电子化微电网惯性小、频率稳定性弱的问题,该文采用虚拟同步发电机(virtual synchronous generator,VSG)控制技术来提升微电网的稳定性。VSG能够模拟传统同步发电机的惯量和阻尼等特性,为系统提供惯量和阻尼支撑。首先建立含虚拟同步发电机的微电网模型,然后研究VSG的虚拟惯量和虚拟阻尼对频率稳定的影响,并提出面向频率稳定的虚拟同步化微电网虚拟惯量和虚拟阻尼参数优化设计方法来提升系统的频率稳定性,最后以3机9节点的虚拟同步化微电网系统为例验证该文方法的有效性。
In order to solve the problems of small inertia and weak frequency stability of power electronic microgrid, this paper used virtual synchronous generator(VSG) control technology to improve the stability of microgrid. VSG can simulate the inertia and damping characteristics of the traditional synchronous generator and provide inertia and damping support for the system. Therefore, this paper first established a microgrid model with virtual synchronous generators, then studied the effect of VSG’s virtual inertia and virtual damping on frequency stability, and a method of virtual inertia and virtual damping parameters optimal design for frequency stability was proposed to improve the frequency stability of the system. Finally, a three-machine nine-node virtual synchronized microgrid system was used as an example to verify the effectiveness of this method.
作者
王淋
巨云涛
吴文传
陈希
WANG Lin;JU Yuntao;WU Wenchuan;CHEN Xi(College of Information and Electrical Engineering,China Agricultural University,Haidian District,Beijing 100083,China;State Key Laboratory of Control and Simulation of Power System and Generation Equipments(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第13期4479-4489,共11页
Proceedings of the CSEE
关键词
微电网
虚拟同步发电机
虚拟惯量
虚拟阻尼
频率稳定
优化设计
microgrid
virtual synchronous generator(VSG)
virtual inertia
virtual damping
frequency stability
optimal design
