异步化汽轮发电机对电力系统低频振荡的抑制  

Low frequency oscillation restraint in power systems that include asynchronized turbogenerators

作　　者：刘刃[1] 廖勇[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2009年第2期126-130,157,共6页Journal of Chongqing University

基　　金：重庆市科技攻关计划项目(2008AB3047)

摘　　要：针对异步化汽轮发电机阻尼特性,提出了在电力系统中采用异步化汽轮发电机部分取代传统同步发电机来抑制低频振荡的理论。分析了电力系统产生低频振荡的原因,研究了异步化汽轮发电机的阻尼特性。以一典型两机两区域系统为例,对异步化汽轮发电机抑制电力系统低频振荡的效果进行了仿真分析,仿真结果进一步表明在电力系统中引入异步化汽轮发电机,能改善系统的动暂态运行特性,并能有效抑制电力系统的低频振荡。Reasons for the occurrence of low frequency oscillations in power system are analyzed, and the damping characteristics of asynchronized turbogenerators （ASTG） are investigated thoroughly. Based on these damping characteristics, a theory of restraining low frequency oscillation by partially replacing the traditional synchronous generator in power systems with an ASTG is proposed. A typical two machines, two area power system model is established. A simulation studying ASTG restraint of low frequency oscillation in power systems is carried out. The simulation results show that power systems incorporating an ASTG possess excellent dynamic and transient operation characteristics, and that low frequency oscillation in power systems is effectively restrained.

关 键 词：电力系统 异步化汽轮发电机 低频振荡 阻尼特性 

分 类 号：TM301.3[电气工程—电机] TM76