利用功角和转速的非线性最优调速附加控制提高汽轮发电机静态和暂态稳定性的研究  

NONLINEAR OPTIMAL GOVERNOR ADDITIONAL CONTROL FOR IMPROVING STATIC STABILITY AND TRANSIENT STABILITY OF TURBOGENERATOR BY USING FEEDBACK OF POWER ANGLE AND ROTATOR SPEED

作　　者：董清[1,2] 高曙[1,2] 侯子利 曹德玲[1,2] 

机构地区：[1]华北电力大学,29号信箱北京100085 [2]华北电力大学电力工程系,河北保定071003

出　　处：《中国电机工程学报》2001年第2期46-49,55,共5页Proceedings of the CSEE

基　　金：国家电力公司资助重点学科建设项目! (A99J0 1)

摘　　要：利用实时测量的功角和转速 ,在原有调速系统速度反馈的基础上 ,提出了 1种基于微分几何理论的非线性最优调速附加控制NOGAC算法。利用该算法设计的附加调速控制器进行了单机无穷大系统的低频振荡和三相短路动模实验 ,动模实验结果表明 :NOGAC能够提高汽轮发电机的静态和暂态稳定性 ;在汽轮发电机发生失步故障后 ,投入NOGAC能够很快将发电机拉入同步 ;NOGAC是对调速汽门实施的 1种连续平滑调节 。A kind of nonlinear optimal governor additional control was put forward in the paper by using feedback of power angle and rotator speed. Because the design of governor in real system is complex, it is useful to consider the affection of the original feedback of rotator speed. It will be easy and feasible to adopt the additional control method for improving generator stability in real system. The dynamic simulating test of restraining low frequency oscillation and three phases short circuit in one machine infinite bus power system have been done by adopting NOGAC. The results of the test show that it is able to improve the static stability and transient stability of turbine generator, it can be used to restore synchronous operation of generator, the output of NOGAC is continuous, and the character of NOGAC is better than that of fast valving.

关 键 词：汽轮发电机 静态稳定性 暂态稳定性 功角 转速 

分 类 号：TM311.014[电气工程—电机]