# 关于低频振荡分析方法的评述

Author 薛禹胜 Xue, Yusheng郝思鹏 Hao, Sipeng刘俊勇 Liu, JunyongDong, ZhaoyangLedwich, Gerard 关于低频振荡分析方法的评述 A review of analysis methods for low-frequency oscillations chieng Dianli Xitong Zidonghua Automation of Electric Power Systems chieng 1000-1026 2009-02-10 Critical review of research, literature review, critical commentary 33 3 1 8 8 Nanjing, China Dianli Xitong Zidonghua Zazhishe chi 1706 Computer Science Applications2207 Control and Systems Engineering2208 Electrical and Electronic Engineering2102 Curatorial and Related Studies 为更好地梳理概念，将低频振荡分析方法分为两大类，即针对系统模型平衡点的特征根方法以及沿着系统受扰轨迹的模式提取方法。平衡点特征根方法可进一步按采用的系统模型分为确定性的线性化模型、确定性的非线性模型和概率模型。这类方法与具体扰动无关，但只能反映系统在该平衡点附近的动态行为，故不适用于包含强非线性、变系数、相继故障或有离散控制的系统。受扰轨迹模式分析方法则从特定扰动下的时间响应曲线中提取振荡信息的时间序列，包括系统模型未知情况下（如实测轨迹）的信号处理法和系统模型已知情况下（如仿真轨迹）的分时段定常线性化法。在评述各种方法的基础上，提出改进的思路及有望突破的研究方向。 Analysis methods for low-frequency oscillation are classified into two categories. One is the equilibrium-point eigenvalue method; the other is the mode extraction method along the disturbed trajectories. The former can be further sorted into deterministic linear models， deterministic non-linear models and probabilistic models. This category is independent of the disturbances. It can only show the dynamics near the equilibrium point， and is not suitable for systems with strong non-linearity， time variant， sequence fault or discrete actions. The latter extracts the oscillation information from the time response curves of the system. It can be further sorted into the signal processing method without knowledge on the system model， such as that for measured trajectories， and the piecewise autonomisation-linearization method， such as that for simulation results. Based on reviewing various methods， hopeful research areas are proposed. Low-frequency oscillationEquilibrium-point eigenvaluesTrajectory eigenvalues sequenceSignal processingStability-preserving dimensional reductions linearity transformPiecewise autonomisation-linearization method C1 Provisional Code UQ

 Document type: Journal Article Critical review of research, literature review, critical commentary School of Information Technology and Electrical Engineering Publications

 Versions Version Filter Type Wed, 27 Nov 2013, 04:09:10 EST Thu, 17 Jul 2014, 14:32:32 EST Thu, 17 Jul 2014, 14:33:36 EST Sat, 04 Oct 2014, 20:16:50 EST Filtered Full
Citation counts: Cited 0 times in Scopus Article Search Google Scholar Wed, 27 Nov 2013, 04:09:10 EST by System User on behalf of School of Information Technol and Elec Engineering