Dynamic Coupling Mechanism Analysis Between Voltage and Frequency in Virtual Synchronous Generator System

被引：4
|
作者：
Cheng, Huijie [1 ]
Li, Chang [2 ]
Ghias, Amer Mohammad Yusuf Mohammad [3 ]
Blaabjerg, Frede [4 ]
机构：
[1] Changsha Univ Sci & Technol, Sch Elect & Informat Engn, Changsha 410114, Peoples R China
[2] Hefei Univ Techonol, Sch Elect Engn & Automat, Hefei 230009, Peoples R China
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[4] Aalborg Univ, Inst Energy Technol, DK-9220 Aalborg, Denmark
来源：
IEEE TRANSACTIONS ON POWER SYSTEMS | 2024年 / 39卷 / 01期
关键词：
Virtual synchronous generator; unified model; dynamic coupling mechanism; voltage stability; frequency stability; STOCHASTIC OPTIMIZATION; CONVERGENCE;
D O I：
10.1109/TPWRS.2023.3328153
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter investigates the dynamic coupling mechanism between voltage and frequency in a virtual synchronous generator (VSG) system, where a unified model is proposed for the analysis of voltage stability, frequency stability and voltage-frequency coupled stability. The results show that voltage/frequency stability is impacted by both self- and coupled-dynamics. Moreover, voltage and frequency oscillate at the same oscillation frequency if the voltage-frequency coupled instability occurs. However, the frequency oscillation occurs while voltage magnitude maintains stability if voltage self-dynamics behaves a negative feedback effect. The time-domain simulation is performed to validate the rationality of the theoretical analysis.
引用
收藏
页码：2365 / 2368
页数：4
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