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The coherent generator groups identified method was proposed via Empirical Mode Decomposition (EMD) and Stochastic Subspace Identification (SSI) method in this paper. Only the generator rotor speed gathered from the Wide Area Measurement System (WAMS) is used in the proposed method, and the detailed model and parameters of power system components are not needed. And the phase diagram obtained by using...
Based on the structure-preserving power system model, the linearized state space with detailed generator model, excitation system model and dynamic load model has developed. The novel method for calculating low frequency oscillatory active power increment distribution by employing the eigenvalues and eigenvectors of the linearized state matrix is presented. The method not only can be applied to calculate...
Advanced mathematical tools with the potential to identify and characterize these dynamics in near real time have been applied very successfully to power system.This paper introduces the stochastic subspace identification(SSI) to the analysis of power system low frequency oscillations,and the power system stabilizer can be designed to use the results of identification and residue .This method can...
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