非同期并列时汽轮发电机组轴系的扭振及其主动控制

Torsional Vibration of Steam Turbine Rotor Strings Caused by Out of Phase Shunting of Turbo Generators and an Active Way of Mastering It

非同期并列是大型汽轮发电机组常见的电力系统故障之一，对机组的安全运行甚为关键。该文计算了非同期并列时汽轮发电机组产生的电磁转矩，分析了其影响因素，并以一台２００ ＭＷ 汽轮发电机组为例，建立了汽轮发电机组轴系扭振主动控制系统模型，并用二次型全局最优控制算法对非同期并列时产生的扭振进行主动控制模拟计算，取得了满意的效果。

Out of Phase Shunting of large turbo generator sets is an often met with fault in power systems,which constitutes a vital factor effecting safe operation of the set.The electro magnetic torque of the turbo generator set,resulting from out of phase shunting of a turbo generator set is being calculated,the influencing factors analyzed,and taking a 200MW turbo generator set as an example,a system model for mastering the torsional vibration of the rotor strings is set up,and an active control analogy calculation of the torsional vibration,effected by out of phase shunting,is performed with the help of the dual comprehensive optimal control calculation method,with which setisfectory results have been obtained.Figs 6,table 1 and refs 4