构网型SVG虚拟阻抗与阻尼解耦控制

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关键词：构网型；静止无功发生器；虚拟阻抗；阻尼解耦控制；电压跌落

中图分类号：TM73 文献标志码：A 文章编号：1003-5168（2025）23-0010-06

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.23.002

Decoupling Control of Virtual Impedance and Damping for Grid-FormingStaticVarGenerator

CHEN Riyao AN JinhuiWANG Qipeng GUO Lili HUANG Shipeng （Liaoning Rongxin Power Electronics Technology Co.，Ltd.，Anshan 114051， China）

Abstract： [Purposes] With the increasing proportion of new energy in power systems，stability issues caused by insufficient inertia and altered damping characteristics in microgrid systems have become increasingly prominent.This paper proposes a decoupling control method based on virtual impedance optimization.[Methods] First， the virtual impedance and decoupling control strategy of grid-forming SVG are thoroughly studied，a detailed mathematical model is established，and the intrinsic mechanism of power coupling is analyzed. Second， virtual impedance parameters are further optimized to reshape the overall system impedance，thereby suppressing high-frequency resonance and other issues.[Findings] The proposed method effectively reduces the coupling between active and reactive power， significantly improving the operational stability and power decoupling performance of grid-forming SVG in complex grid environments.[Conclusions]This method can enhance the system's ability to accommodate new energy， optimize dynamic performance， and provide strong technical support for subsequent research and engineering applications related to stability in new energy power systems.

Keywords： grid-forming; Static Var Generator; virtual impedance; damping decoupling control; voltage dip

0 引言

太阳能等新能源凭借清洁、可再生的突出优势，在电力系统中的渗透率持续快速增长。（剩余5888字）