基于复合模式的电力系统超低频振荡产生机理  

The Generation Mechanism of Ultra-Low Frequency Oscillation in Power Systems Based on Combination Modes

作　　者：邓集祥[1] 纪晶[1] 邓斌[2] 

机构地区：[1]东北电力大学电气工程学院,吉林132012 [2]天津电力公司,天津300010

出　　处：《电工技术学报》2007年第8期84-89,共6页Transactions of China Electrotechnical Society

摘　　要：从电力系统内部非线性结构特性出发,运用正则形理论这一有效的非线性分析方法,通过对复合模式在stressed系统中作用的深入研究,提出复合模式成为主导模式可以构成电力系统超低频振荡的振荡模式这一全新看法。从正则形理论复合模式的角度对超低频振荡的产生机理加以阐述,通过时域仿真,并运用Prony方法对其进行检验,表明所提出的这一新见解和新方法的正确性。Based on the nonlinear inside fabric characteristics of power systems, a new concept is proposed by studying the effects of the combination modes using normal forms method, that is, the oscillation modes of the ultra-low frequency oscillation are just represented by the combination of the fundamental modes when the combination modes become the dominant modes. The appearance of the ultra-low frequency oscillations is explained by means of the effects of the combination modes. The correct of the new concept and the new method are testified in terms of the time domain simulation and the Prony analysis method.

关 键 词：超低频振荡 正则形方法 复合模式 非线性相关因子 PRONY分析 

分 类 号：TM712[电气工程—电力系统及自动化]