调速系统恶化阻尼的机理分析及其改进措施  

Mechanism Analysis for Negative Damping Caused Governing System and its I mprovement Measure

作　　者：张利娟 陈庆国 陈海焱[3] 陈金富[3] 

机构地区：[1]广东核电工程有限公司,广东深圳518000 [2]深圳长江兴业发展有限公司,广东深圳518000 [3]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《水电能源科学》2005年第3期9-11,i002,共4页Water Resources and Power

基　　金：中国博士后科学基金资助项目(2003034473)

摘　　要：以汽轮机调速系统为例,对其恶化系统低频振荡阻尼的机理进行了研究;探讨了引入附加控制消除调速系统在低频振荡时产生的负作用,给出考虑调速系统及其附加控制的单机无穷大系统的传递函数框图,推导出系统的线性方程组并进行仿真计算。结果表明:调速系统的参数选择不当会提供负阻尼恶化系统的低频振荡;附加控制能有效消除调速系统的负作用。In this paper, a model of governing system for power s ystems is described. On the basis of the model, the author researches the mechan ism for preventing system damping of low frequency oscillation caused by the gov erning system. An improvement measure is presented, which can eliminate some sid e-effects of the governing system. Some simulations are made in a single machin e system and their results are as follows: (1) configuration inappropriate param eters of governing system can give rise to negative damping, which causes low fr equency oscillation of power system; (2) the improvement measure here presented is effective in eliminating the negative damping.

关 键 词：调速系统 低频振荡 电力系统稳定器 

分 类 号：TM921[电气工程—电力电子与电力传动]