双馈电机改善系统阻尼的研究  

Contribution of Doubly Fed Induction Generator to Power System Damping

作　　者：王国民[1] 吴政球[1] 彭程[1] 陈波[1] 邹贤求[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082

出　　处：《电网技术》2011年第6期144-148,共5页Power System Technology

摘　　要：给出了双馈电机的完整小信号模型,分析了双馈电机对系统阻尼的影响,在此基础上通过在转子侧控制系统中引入电力系统稳定器(power system stabilizer,PSS)环节,使系统扰动时,双馈电机能够提供额外的阻尼来削弱震荡,并通过特征根和时域仿真来验证其有效性,结果表明,引入的PSS环节能够改善系统阻尼、提高稳定性。A complete small signal mode of doubly fed induction generator（DFIG） is given,and the impact of DFIG on power system damping is analyzed.On this basis,by means of leading power system stabilizer（PSS） to the rotor-side control system of DFIG,the DFIG can offer additional damping to suppress oscillation during the disturbance process.The effectiveness of the proposed point of view is verified by eigenvalue analysis and time-domain simulation.Simulation results show that the led in PSS can enhance system damping and improve power system stability.

关 键 词：双馈电机 小信号模型 系统阻尼 电力系统稳定器 

分 类 号：TM315[电气工程—电机]