Application of Hankel Dynamic Mode Decomposition for Wide Area Monitoring of Subsynchronous Resonance

作     者：Lei Wang Tiecheng Li Hui Fan Xuekai Hu Lin Yang Xiaomei Yang 

作者机构：State Grid Hebei Electric Power Research InstituteShijiazhuang050021China State Grid Hebei Electric Power CompanyShijiazhuang050021China The College of Electrical EngineeringSichuan UniversityChengdu610065China 

出 版 物：《Energy Engineering》 (能源工程（英文）)

年 卷 期：2023年第120卷第4期

页      面：851-867页

核心收录：

学科分类：07[理学] 0701[理学-数学] 

基　　金：supported by the China Key Technology Research on Risk Perception of Sub-Synchronous Oscillation of Grid with Large-Scale New Energy Access SGTYHT/21-JS-223. 

主　　题：Hankel dynamic mode decomposition time-varying sub-synchronous oscillation synchrophasor 

摘      要：In recent years,subsynchronous resonance(SSR)has frequently occurred in DFIG-connected series-compensated systems.For the analysis and prevention,it is of great importance to achieve wide area monitoring of the incident.This paper presents a Hankel dynamic mode decomposition(DMD)method to identify SSR parameters using synchrophasor data.The basic idea is to employ the DMD technique to explore the subspace of Hankel matrices constructed by synchrophasors.It is analytically demonstrated that the subspace of these Hankel matrices is a combination of fundamental and SSR modes.Therefore,the SSR parameters can be calculated once the modal parameter is extracted.Compared with the existing method,the presented work has better dynamic performances as it requires much less data.Thus,it is more suitable for practical cases in which the SSR characteristics are timevarying.The effectiveness and superiority of the proposed method have been verified by both simulations and field data.