A Parameter Alternating VSG Controller of VSC-MTDC Systems for Low Frequency Oscillation Damping

被引：75

作者：

Wang, Weiyu ^{[1
]}

Jiang, Lin ^{[2
]}

Cao, Yijia ^{[1
]}

Li, Yong ^{[1
]}

机构：

[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Peoples R China

[2] Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3GJ, Merseyside, England

来源：

IEEE TRANSACTIONS ON POWER SYSTEMS | 2020年 / 35卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Power system stability; Damping; Power conversion; Power system dynamics; Stability criteria; Virtual synchronous generator (VSG); voltage source converter (VSC); multi-terminal direct current system (MTDC); inter-area oscillation damping; dc voltage stability; GENERATOR; STRATEGY; MODELS;

D O I：

10.1109/TPWRS.2020.2997859

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：

The virtual synchronous generator (VSG) has been widely applied for mimicking the dynamic performance of a synchronous generator (SG) by power-electronic interfaced power sources. When the VSG is implemented in VSC-based multi-terminal direct current (VSC-MTDC) systems, the impact of VSG on both ac- and dc-grid dynamics, i.e., the low frequency oscillatory (LFO) modes and dc voltage stability should be taken into consideration. This paper investigates the participation of the VSG controller in low frequency oscillatory (LFO) modes and the impact on dc voltage stability. The influence of VSG parameters on the system dynamics is investigated by the Singular Value Decomposition (SVD) analysis and modal analysis. A parameter alternating VSG (AVSG) controller is proposed to improve the damping performance to LFO modes and mitigating the negative impact of VSG on dc voltage stability. The effectiveness of the proposed AVSG controller is validated according to the non-linear simulations on two test systems.

引用

页码：4609 / 4621

页数：13

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