Effect of virtual synchronous generator on low frequency oscillation characteristics of system

被引：0
|
作者：
Wang Q. [1 ]
Sun D. [2 ]
Sheng S. [1 ]
Zhang R. [3 ]
Liu H. [2 ]
Gong Y. [2 ]
机构：
[1] College of Electrical and Electronic Engineering, North China Electric Power University, Baoding
[2] State Grid Jibei Electric Power Research Institute, Beijing
[3] College of Electrical Engineering & New Energy, China Three Gorges University, Yichang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2021年 / 42卷 / 12期
关键词：
Low-frequency oscillation; Small signal model; Virtual impedance; Virtual synchronous generator;
D O I：
10.19912/j.0254-0096.tynxb.2019-1451
中图分类号：
学科分类号：
摘要：
A small-signal model of synchronous generators (SG) and VSG was first established. Based on the same control theory, the effects of SG and VSG's frequency modulation capability and inertia level on the low-frequency oscillation mode of the system were analyzed. The effect differences and the reasons for the difference of SG and VSG on low-frequency oscillation were studied. The research results show that the virtual impedance control link of VSG is the key factor that makes VSG and SG inconsistent in low frequency oscillation characteristics. When the virtual impedance is small, the influence of VSG on low frequency oscillation mode is similar to SG. © 2021, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：410 / 418
页数：8
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