中国电机工程学报2013，Vol.33Issue(7)：61-68,前插8,9.
低频振荡模式非线性相关作用的高阶谱非参数直接分析法
Low Frequency Oscillation Modes Nonlinear Interactions Analysis Using Higher Order Spectrum Non-parametric Direct Method
摘要
Abstract
A novel algorithm for analyzing low frequency oscillation modes nonlinear interactions was proposed to avoid the disadvantages of the eigenvalue analysis method and the traditional nonlinear numerical solutions. The eigenvalue analysis method could not reveal the compound modes in oscillatory processes following large perturbations, and the traditional nonlinear numerical solutions had truncation errors and low computational efficiency. The non-parametric direct method of higher order spectrum theory was applied to analyze low frequency oscillation modes and the quadratic phase coupling information among modes were identified by using bispectrum estimation and bicoherence analysis. The nonlinear coupling degree between modes can be quantitatively calculated in this method, which provides a new way to study the stability and the dynamic behavior of power systems with strong nonlinearity. The feasibility and effectiveness of the proposed approach were verified by the numerical simulation results.关键词
低频振荡模式/非线性相关作用/高阶谱/非参数直接法/双谱估计/双相干系数/二次相位耦合Key words
low frequency oscillation modes/ nonlinear interaction/ higher order spectrum/ non-parametric direct method/ bispectrum estimation/ bicoherence/ quadratic phase coupling分类
信息技术与安全科学引用本文复制引用
李勋,龚庆武,乔卉,关钦月,贾晶晶..低频振荡模式非线性相关作用的高阶谱非参数直接分析法[J].中国电机工程学报,2013,33(7):61-68,前插8,9.基金项目
中央高校基本科研业务费专项资金资助(201120702020012). （201120702020012）
