Zhu S，Vuttal V，Kliemann W．Analyzing dynamic performance of power systems over parameter space using normal forms of vector fields part-2；comparison of the system structure[J]．IEEE Trans on Power Systems，2001，16(3)：451-455．
[3]
Jan G，Vittal V，Kliemann W．Effect of nonlinear modal interaction on control performance use of normal forms technique in control design-part 1：general theory and procedure[J]．IEEE Trans on Power Systems，1998，13(2)：401-407．
[4]
Lin C M，Vittal V，Kliemann W，et al．Investigation of modal interaction and its effects on control performance in stressed power systems using normal forms of vector fields[J]．IEEE Trans on Power Systems，1996，11(2)：781-787．
Deng Jixiang，Hua Yao，Han Xuefei．Study on effect of low power frequency oscillation modes in large disturbance stability [J]．Proceedings of the CSEE，2003，23(11)：60-64(in Chinese)．
Deng Jixiang，Zhao Lili．Study on the second order nonlinear interaction of the critical inertial modes[J]．Proceedings of the CSEE， 2005，25(7)：75-80(in Chinese)．
[9]
Pierre D A，Smith J R，Trudnowsk D J，et al．Prony based methods for simultaneous identification of transfer functions and initial conditions[J]．Computers Elect Engineering，1995，21(2)：89-100．
Cao Wei，Weng Binwei，Chen Chen．Prony analysis of power transient variables [J]．Transactions of China Electrotechnical Society，2000，15(6)：56-60(in Chinese)．
Ju Ping，Xie Huan，Meng Yuanjing，et al．Online identification of low-frequency oscillations based on wide-area measurements [J]．Proceedings of the CSEE，2005，25(22)：56-60(in Chinese)．
Xu Dongjie，He Renmu，Gao Hailong．Transfer function identification using iteractive Prony method[J]．Proceedings of the CSEE，2004，24(6)：40-43(in Chinese)．
Lu Jingjing，Guo Jian，Tian Fang，et al．Power system oscillation mode analysis and parameter determination of PSS based on Prony method[J]．Power System Technology，2004，28(15)：31-34(in Chinese)．
Deng Jixiang，Hua Yao，Zhang Fang．Study of the nonlinear interaction of oscillation modes[J]．Automation of Electric Power Systems，2003，27(16)：35-39(in Chinese)．
Xu Dongjie，He Renmu，Hu Guoqiang，et al．Analysis of low frequency oscillations using normal form method[J]．Proceedings of the CSEE，2004，24(3)：18-22(in Chinese)．
