大干扰稳定中低频振荡模式的作用研究  

STUDY ON EFFECT OF LOW FREQUENCY OSCILLATION MODES IN LARGE DISTURBANCE STABILITY

作　　者：邓集祥[1] 华瑶[1] 韩雪飞[1] 

机构地区：[1]东北电力学院,吉林吉林130012

出　　处：《中国电机工程学报》2003年第11期60-64,共5页Proceedings of the CSEE

摘　　要：该文在向量场正则形理论的指引下,提出了数值求解向量场非线形正则变换系数的算法,实现了非线性向量场的正则变换,得到了电力系统状态方程的2阶解析解和鉴别大干扰下主导低频振荡模式的方法。在此基础上,通过研究低频振荡模式与其它模式以及状态变量间的非线性相关作用,把低频振荡模式与系统大干扰稳定联系在一起。从另一个侧面揭示了以往大干扰稳定分析中所无法涉及的新现象,得到了一些新的观点和新的见解。On the basis of the theory of normal forms of vector fields, a numerical differentiation algorithm to figure out nonlinear normal transformation coefficient is presented in this paper. Then the normal forms transformation of the nonlinear vector fields is finished and the second-order analytic solution of the power system is solved. An analytical index to distinguish the dominant low frequency oscillation modes following a large disturbance is obtained. Thereby the low frequency oscillation modes come into contact with the stability analysis under large disturbance , through nonlinear interacting among the low frequency oscillation modes and other modes and the state variables. Some new phenomenon are revealed from the other side which cannot be touched by the classical stability analysis under large disturbance and some new points of view are gained.

关 键 词：电力系统 状态方程 暂态稳定性 低频振荡模式 

分 类 号：TM712[电气工程—电力系统及自动化]