摘要
大规模风电接入电网系统会引发功率振荡,严重危及电网系统安全稳定运行。文章针对双馈风电场与直驱风电场并联接入含固定串补系统的次同步振荡问题,建立了混合风电场线性化模型,分析风机占比、控制参数和运行风速对系统运行性的影响;基于双馈、直驱风电场动态阻抗模型进一步揭示系统次同步振荡机理。在EMTDC/PSCAD中搭建时域仿真模型,验证了理论分析的正确性和有效性。
The power oscillation caused by large-scale wind power connected to the grid seriously endangers the safe and stable operation of the power system.Focusing on the subsynchronous oscillation problem of a system that includes doubly-fed induction generators,direct-drive permanent magnet synchronous generators,and fixed series compensation.A linearized model of the hybrid-based wind farm is established to analyze the influence of wind farms proportion,control parameters,and operating wind speeds on the system operating characteristics.Based on the dynamic impedance model of the hybrid-based wind farm,the mechanism of subsynchronous oscillation is further revealed.A time-domain simulation model is built in EMTDC/PSCAD to verify the correctness and effectiveness of the theoretical analysis.
作者
王俊茜
贾祺
刘侃
翟文超
王健
Wang Junxi;Jia Qi;Liu Kan;Zhai Wenchao;Wang Jian(Ministry of Education Key Laboratory of Modern Power System Simulation Control and Green Power Technology,Northeast Electric Power University,Jilin 132012,China;State Grid Liaoning Electric Power Research Institute,Shenyang 110006,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2022年第5期651-659,共9页
Renewable Energy Resources
基金
国家自然科学基金智能电网联合基金项目(U1866601)。
关键词
双馈风电场
直驱风电场
固定串补
次同步振荡
阻抗特性
doubly-fed induction generator
direct-drive permanent magnet synchronous generator
fixed series compensation
sub-synchronous oscillation
impedance characteristic
