Simplified equivalent models of large-scale wind power and their application on small-signal stability  

作　　者：Nan DING Zongxiang LU Ying QIAO Yong MIN 

机构地区：[1]State Key Laboratory of Control and Simulation of Power System and Generation Equipments,Tsinghua University,Beijing 100084,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2013年第1期58-64,共7页现代电力系统与清洁能源学报（英文）

基　　金：This work is supported by State Key Laboratory of Control and Simulation of Power System and Generation Equip-ments,Tsinghua University;National Natural Science Foundation of China(51190101);National High-tech R&D Program(863 Program)(2011AA05A104);National Natural Science Foundation of China(51077078).

摘　　要：With the rapid growth of grid-connected wind power penetration level,it is necessary to study the impacts of wind power on power system stability.The small-signal stability of power systems with large-scale wind power is explored using the eigenvalue analysis method.A prototype sample system,the two-synchronous-generator system with a wind farm,is proposed for theoretical analysis.Then,simplified models of wind turbines(WTs)and the corresponding equivalent models of wind farms are analyzed.Three kinds of typical WT models,i.e.,squirrel cage induction generator,doubly-fed induction generator,and permanent magnet synchronous generator are used.Furthermore,based on the simplified equivalent models,effects of large-scale wind farms on the electromechanical oscillation modes(EOMs)of synchronous systems are discussed.Simulation results indicate that wind farms of the three kinds of WTs have positive effects on EOMs.However,long transmission lines connecting wind farmto the systemmay produce negative effects on the small-signal stability of the system.

关 键 词：Wind turbine(WT) Small-signal stability Electromechanical oscillation mode(EOM) Simplified model Equivalent model 

分 类 号：O17[理学—数学]