Virtual Inertia Estimation Method of DFIG-based Wind Farm with Additional Frequency Control

作     者：Pengwei Chen Chenchen Qi Xin Chen Pengwei Chen;Chenchen Qi;Xin Chen

作者机构：Jiangsu Key Laboratory of New Energy Generation and Power ConversionCollege of Automation EngineeringNanjing University of Aeronautics and AstronauticsNanjingChina 

出 版 物：《Journal of Modern Power Systems and Clean Energy》 (现代电力系统与清洁能源学报（英文）)

年 卷 期：2021年第9卷第5期

页      面：1076-1087页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：This work was supported in part by the National Science Foundation of China(No.51877015) the Science and Technology Foundation of State Grid Corporation of China(No.SGTYHT/19-JS-215). 

主　　题：Doubly-fed induction generator(DFIG) additional frequency control virtual moment of inertia matrix pencil method least squares algorithm 

摘      要：With the increasing penetration of wind power,using wind turbines to participate in the frequency regulation to support power system has become a clear consensus.To accurately quantify the inertia provided by the doubly-fed induction generator(DFIG)based wind farm,the frequency response model of DFIG with additional frequency control is established,and then by using Routh approximation,the explicit expression of the virtual moment of inertia is derived for the DFIG gridconnected system.To further enhance the availability of the expression,an estimation method is proposed based on the matrix pencil method and the least squares algorithm for estimating the virtual moment of inertia provided by the wind farm.Finally,numerical results tested by a DFIG grid-connected system and a modified IEEE 30-bus system verify the derived expression of the virtual moment of inertia and the proposed estimation method.