模态级数法在主导低频振荡模式鉴别方面的应用  

Identification of Critical Low Frequency Oscillation Mode in Large Disturbances Using Mode Series

作　　者：李佳[1] 刘金山[2] 葛文红[2] 

机构地区：[1]四川电力职业技术学院,四川成都610072 [2]东北电力大学,吉林吉林132012

出　　处：《吉林电力》2008年第4期9-12,共4页Jilin Electric Power

摘　　要：基于模态级数法3阶解析解,提出了大干扰下识别系统主导低频振荡模式的方法,确定了大干扰下对系统动态特性和稳定性影响最大的主导低频振荡模式,并根据3阶情况下的非线性相关因子,确定主导低频振荡模式的强相关状态变量。最后用Prony方法,验证了主导模式鉴别式和3阶相关因子的正确性和有效性。The method that critical low frequency oscillation mode can be identified in large disturbances is proposed based on the third-order analytical solution of modal series. The most effective critical low frequency oscillation mode on systematic dynamic characteristic and stability in large disturbances is determined. The high correlated state variable of critical low frequency oscillation mode is certained according to the nonlinear correlated factors in the third-order circumstance. The discriminating formula of critical mode , correctness and effectiveness are certified through Prony method.

关 键 词：大干扰 模态级数 主导低频振荡模式 非线性相关作用 

分 类 号：TM712[电气工程—电力系统及自动化]