Title :
A procedure for oscillatory parameter identification
Author :
Trudnowski, D.J. ; Donnelly, M.K. ; Hauer, J.F.
Author_Institution :
Pacific Northwest Lab., Richland, WA, USA
fDate :
11/1/1994 12:00:00 AM
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;
Journal_Title :
Power Systems, IEEE Transactions on
