(华南理工大学 电力学院, ),广东,广州,510641
纸质出版:2026
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邢文超,张俊勃.新型电力系统中跟网与构网变流器暂态特性与控制综述[J].智慧电力,2026,54(5):115-125.
doi:10.20204/j.sp.2026.05014
邢文超,张俊勃.新型电力系统中跟网与构网变流器暂态特性与控制综述[J].智慧电力,2026,54(5):115-125. DOI: 10.20204/j.sp.2026.05014.
doi:10.20204/j.sp.2026.05014 DOI:
随着电力电子化程度不断提高,功率器件的过流能力逐渐成为制约新型电力系统暂态安全的重要因素。在大扰动条件下,限流等故障穿越控制引发的控制模式切换等非线性行为会显著影响变流器同步及故障恢复过程,增加了暂态稳定分析与控制设计的复杂度。为此,系统综述了跟网型变流器(GFL)与构网型变流器(GFM)的暂态特性及相关控制策略。首先,梳理了2类变流器的基本控制类型及其典型的限流等暂态控制环节;其次,从单机层面分类总结了变流器的暂态失稳机理、特性研究及增强控制策略,并重点剖析了限流对构网特性和同步行为的影响;接着,从系统层面综述了由GFL与GFM构成的多变流器系统的暂态稳定问题研究进展,并归纳了主要的风险评估与协同应对策略;最后,指出现有研究在构网能力边界不清、复杂运行场景验证不足以及多目标协同设计欠缺等方面的不足,并对未来的研究方向进行了展望。
With the increasing penetration of power electronics
the overcurrent capability of power devices has gradually become a critical factor constraining the transient security of new-type power systems. Under large disturbances
nonlinear behaviors such as control mode switching induced by fault ride-through controls like current limiting can significantly affect the synchronization and fault recovery processes of converters
thereby increasing the complexity of transient stability analysis and control design. To address this
this paper systematically reviews the transient characteristics and related control strategies of grid-following (GFL) and grid-forming (GFM) converters. First
the basic control types of these two converter categories and their typical transient control schemes
such as current limiting
are outlined. Second
from a single-converter perspective
the transient instability mechanisms
characteristic studies
and enhanced control strategies are classified and summarized
with a focus on analyzing the impact of current limiting on grid-forming characteristics and synchronization behavior. Third
from a system-level perspective
the research progress on transient stability issues in multi-converter systems consisting of GFL and GFM converters is reviewed
and the main risk assessment and coordinated countermeasure strategies are summarized. Finally
the shortcomings of existing research are identified
such as unclear boundaries of grid-forming capability
insufficient validation under complex operational scenarios
and a lack of multi-objective cooperative design. Future research directions are also prospected.
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