虚拟同步与匹配控制下的构网型变流器稳定性对比研究  

Comparative Study on the Stability of Grid-forming Converters Under Virtual Synchronization and Matching Control

作　　者：刘羽飞 苏杰[1] 孙大卫 刘喻龙 何英时 LIU Yufei;SU Jie;SUN Dawei;LIU Yulong;HE Yingshi(Department of Automation,North China Electric Power University,Baoding 071003,China;State Grid Jibei Electric Power Research Institute,Beijing 100045,China;School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学自动化系,河北保定071003 [2]国网冀北电力科学研究院,北京100045 [3]华北电力大学控制与计算机工程学院,北京102206

出　　处：《电力科学与工程》2025年第3期46-54,共9页Electric Power Science and Engineering

基　　金：国网冀北电力有限公司冬奥赛区100%清洁电力高可靠供应关键技术研究及示范项目(2020YFF0305800)。

摘　　要：现有关于虚拟同步控制和匹配控制的研究主要聚焦于单一控制策略的优化与改进,缺少系统性的性能差异分析。两者在小信号稳定性和适应场景中差异的明确,可为不同类型的电力系统和负载条件选择合适的控制策略提供依据。首先针对采用这2种控制方式下的构网型变流器并网系统进行小信号建模,然后从机理层面对比分析了这2种方式在稳定性方面的区别,利用特征值分析法确定2种控制方式下系统振荡模态的差异,利用参与因子和特征值根轨迹分析了系统控制参数以及并网条件对这2种控制方式下系统的阻尼特性差异化影响,并提出了这2种控制方式的适用场景。Existing research on virtual synchronization control and matching control mainly focuses on the optimization and improvement of single control strategy,and lacks a systematic analysis of the performance difference aspects.The clarity of the differences between the two in small signal stability and adaptation scenarios can provide a basis for selecting appropriate control strategies for different types of power systems and load conditions.Firstly,small signal modeling is conducted for the grid connected system with grid-forming converters using these two control methods.Then,it compares and analyzes the differences between the two methods in terms of stability from the mechanistic level.The eigenvalue analysis method is used to determine the difference between the oscillation mode of the system under two types of control,the effects of the system control parameters and the grid connected conditions on the differentiated damping characteristics of the system under these two controls are analyzed by the participation factor and the eigenvalue trajectory,and the applicable scenarios of the two control methods are proposed.

关 键 词：虚拟同步发电机控制 匹配控制 特征值分析法 小信号模型 电力系统稳定 

分 类 号：TM72[电气工程—电力系统及自动化]