A procedure for oscillatory parameter identification

Author

Trudnowski, D.J. ; Donnelly, M.K. ; Hauer, J.F.

Author_Institution

Pacific Northwest Lab., Richland, WA, USA

Volume

9

Issue

4

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

2049

Lastpage

2055

Abstract

A procedure is proposed where a power system is excited with a low-level pseudo-random probing signal and the frequency, damping, magnitude, and shape of oscillatory modes are identified using spectral density estimation and frequency-domain transfer function identification. Attention is focussed on identifying system modes in the presence of noise. Two example cases are studied: identification of electromechanical oscillation modes in a 16-machine power system; and turbine-generator shaft modes of a 3-machine power plant feeding a series-compensated 500-kV network

Keywords

circuit oscillations; frequency-domain analysis; parameter estimation; power system measurement; power system stability; power transmission; transfer functions; turbogenerators; 500 kV; damping; electromechanical oscillation modes; field testing; frequency; frequency-domain transfer function identification; low-level pseudo-random probing signal; magnitude; oscillatory parameter identification; power plant; power system; series compensation; shape; spectral density estimation; transmission systems; turbine-generator shaft modes; Damping; Frequency estimation; Noise shaping; Parameter estimation; Power generation; Power systems; Shafts; Shape; Signal processing; Transfer functions;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.331468

Filename

331468