Impact mechanism analysis of virtual governor on transient power angle stability of VSG

被引：0
|
作者：
Zhang W. [1 ]
Huang W. [1 ]
Shuai Z. [1 ]
Ge J. [1 ]
Shen C. [2 ]
Cheng H. [1 ]
Shen X. [1 ]
机构：
[1] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha
[2] School of Electrical Engineering, Southeast University, Nanjing
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2022年 / 42卷 / 08期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
high-pass filter; low-pass filter; transient power angle stability; virtual governor; virtual synchronous generator;
D O I：
10.16081/j.epae.202206028
中图分类号：
学科分类号：
摘要：
As an important part of primary frequency regulation，VG（Virtual Governor） is extremely important for VSG（Virtual Synchronous Generator） to maintain transient power angle stability under large disturbances. The LPF（Low-Pass Filter） and HPF（High-Pass Filter） type VGs are taken for research objects，the corresponding VSG transient large signal models are built. The extended equal area criterion is adopted to analyze VSG transient power angle stability mechanism considering different governors，and the phase portrait method is used to quantitatively research the impact of VG control parameters on VSG transient power angle stability. It is found that decreasing the cut-off frequency of VG will improve the system transient power angle stability，increasing the gain of LPF type VG will strengthen the system transient power angle stability，while increasing the gain of HPF type VG will cause the system transient power angle stability strengthen first and then weaken. When the gain and cut-off frequency of VG are the same，LPF type VG has a larger margin of system transient power angle stability than that of HPF type VG. The correctness of theoretical analysis is verified by the simulative results. © 2022 Electric Power Automation Equipment Press. All rights reserved.
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页码：55 / 62+71
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