中国电机工程学报2025，Vol.45Issue(13)：4943-4955,中插1,14.DOI:10.13334/j.0258-8013.pcsee.240781
基于变流器系统状态空间法的小干扰稳定分析与控制研究
Small Disturbance Stability Analysis and Control Research Based on State Space Method of Converter System
摘要
Abstract
With the large-scale access of various new energy sources connected to the grid through converters,the traditional state space method based on the electromechanical transient model can reflect the broadband oscillation phenomenon of various electromagnetic transient scales.Electromagnetic transient analysis mostly takes the instantaneous value of voltage and current as the analysis object,and there is no traditional equilibrium point.It is difficult to use all kinds of existing stability theory directly.Starting from the basic definition of asymptotic stability and combining it with the characteristics of a power system,this paper first defines the types and stability of state variables in electromagnetic transient scale and proves that the application of Park transformation will not change the stability of the nonlinear system.Then,the electromagnetic transient scale state-space model of typical power components and grid components is constructed,and the state space model of the whole system is established.Next,considering that the state space method has the characteristics of global factor analysis,the eigenvalue sensitivity and right eigenvector are used to analyze the dominant influencing factors of different oscillation modes,the state variables,and the participation of each unit.Finally,the feasibility and correctness of the proposed method are verified by combining a typical multi-machine system example.关键词
状态空间/特征值/电力系统/电磁暂态Key words
state-space/eigenvalues/power system/electromagnetic transients分类
信息技术与安全科学引用本文复制引用
龚浩岳,郭强,郭剑波,周勤勇,张健,张立波,高磊..基于变流器系统状态空间法的小干扰稳定分析与控制研究[J].中国电机工程学报,2025,45(13):4943-4955,中插1,14.基金项目
国家电网有限公司科技项目(5100-202355407A-3-2-ZN). Science and Technology Project of State Grid Corporation of China(5100-202355407A-3-2-ZN). （5100-202355407A-3-2-ZN）
