Title :
Visualization of interarea oscillations using an extended subspace identification technique
Author :
Ramos, J. ; Jimenez, R. ; Barocio, E.
Author_Institution :
Dept. of Electr. Eng., CINVESTAV, Zapopan, Mexico
Abstract :
Online assessment and control of low-damping power system oscillations is a challenging problem. This paper discusses the use of subspace stochastic method to visualize and characterize the time evolution of power system electromechanical modes. Using normalized instantaneous amplitudes of modal components, two time-varying indexes to determine mode distribution maps are proposed and tested. The method is well suited to automation and can be incorporated to existing wide-area monitoring systems. Simulation studies on a 16-machine, 68-bus test system show the applicability of the proposed technique.
Keywords :
electromechanical effects; power system control; power system identification; power system measurement; stochastic processes; 16-machine test system; 68-bus test system; extended subspace identification technique; interarea oscillation visualization; low-damping power system oscillation assessment; low-damping power system oscillation control; mode distribution map determination; normalized instantaneous amplitude; power system electromechanical mode; subspace stochastic method; time evolution characterization; time-varying index; wide-area monitoring system; Indexes; Matrix decomposition; Monitoring; Observability; Oscillators; Power systems; Vectors;
Conference_Titel :
North American Power Symposium (NAPS), 2013
Conference_Location :
Manhattan, KS
DOI :
10.1109/NAPS.2013.6666931
