双馈风电场的次同步振荡分析与抑制  

Subsynchronous Oscillation Analysis and Suppression of Doubly Fed Wind Farm

作　　者：杨烨 江晓燕 徐野驰 张瑶 YANG Ye;JIANG Xiao-yan;XU Ye-chi;ZHANG Yao(School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094

出　　处：《电气开关》2019年第2期84-89,共6页Electric Switchgear

摘　　要：针对现有的风电串补系统次同步振荡的抑制措施缺乏对次同步振荡的机理研究以及参数的动态优化,物理意义大都不太明确且抑制效果受到了很大的局限性,本文建立了双馈风机串补并网系统的模型,通过数学推导详细分析了风机次同步振荡的机理并通过时域仿真分析了次同步振荡的影响因素。在此基础上,通过在转子侧附加基于遗传粒子群算法进行参数寻优的改进阻尼控制器抑制双馈风机串补并网的次同步振荡。时域仿真结果表明:与固定参数的抑制方法相比,此方法对风电串补系统的次同步振荡抑制效果更好。Abstract : In view of the lack of the mechanism of subsynchronous oscillation and the dynamic optimization of the parameter,most of the existing suppression measures for SSO of the wind power series compensation system lack the clear physical meaning and the inhibition effect has been greatly limited.In this paper ,the model of DFIG connected to the grid by series compensation is established.Besides,through mathematical deduction,the mechanism of SSO is analyzed in detail,and the influencing factors are analyzed through time domain simulation.Based on that,an improved damping controller based on genetic particle swarm optimization is added to the rotor side to suppress the sub-synchronous oscillation of DFIG.The time domain simulation results show that the proposed method is more effective than the fixed parameter suppression method in suppressing SSO of the wind power series compensation system.

关 键 词：次同步振荡 双馈风机 串补并网 遗传粒子群算法 附加次同步阻尼控制器 

分 类 号：TM61[电气工程—电力系统及自动化]