电力建设2026，Vol.47Issue(4)：1-15,15.DOI:10.12204/j.issn.1000-7229.2026.04.001
计及阻尼控制的受端构网型换流器调频关键参数估测方法
Key Parameter Estimation Method for Frequency Modulation of Receiving-End Grid-Forming Converters Considering Damping Control
摘要
Abstract
[Objective]Driven by the"dual carbon"goals,the installed capacity of new energy sources has grown rapidly,and the system inertia characteristics are evolving from physical inertia to virtual inertia.New energy units adopt multiple control strategies,and their strong nonlinearity of dynamic responses and time-varying parameter characteristics significantly increase the difficulty in evaluating equivalent inertia and damping parameters.Therefore,this paper proposes a coordinated estimation method for inertia and damping of receiving-end grid-forming converters considering damping control.[Methods]Firstly,the influence of key frequency modulation parameters on various frequency dynamic response indicators is analyzed.Then,a coordinated estimation method based on least squares method and genetic algorithm for sliding fitting of inertia and damping of grid-forming converters at the receiving end is proposed.Considering the difficulty in verifying the effectiveness of estimation results,a dual-model comparative verification method based on P-ω admittance method is proposed.Finally,the key parameters of frequency modulation of the grid-connected converter at the receiving end of the PV system under different working conditions are estimated,and the accuracy of the estimated results is intuitively verified,which provides an important basis for the overall estimation and safety and stability analysis of the system.[Results]Simulation estimation and verification methods show that the proposed estimation method can complete the estimation of key frequency modulation parameters of receiving-end grid-forming converters with high accuracy,and the estimation method is efficient and feasible.[Conclusions]This paper studies the estimation of inertia and damping parameters of grid-forming converters,and proposes a parameter estimation method and verification scheme.Case studies show that the proposed method can quickly estimate key parameters after disturbances with small errors,providing a basis for the estimation of key frequency modulation parameters and security and stability analysis of the entire system.关键词
等效惯性时间常数/阻尼系数/构网型换流器/惯量/参数估测/柔性直流输电Key words
equivalent inertia time constant/damping coefficient/grid-forming converter/inertia/parameter estimation/flexible DC transmission分类
信息技术与安全科学引用本文复制引用
颜湘武,徐越,张辉,屈越,李泊涵,王浩名,贾焦心..计及阻尼控制的受端构网型换流器调频关键参数估测方法[J].电力建设,2026,47(4):1-15,15.基金项目
智能电网国家科技重大专项(2025ZD0805201) This work is supported by National Science and Technology Major Project on Smart Grid(No.2025ZD0805201). （2025ZD0805201）
