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A Method for on-Line Identification of Power System Model Parameters in the Presence of Noise

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4 Author(s)
Bollinger, K.E. ; Electrical Engineering Dept. University of Alberta ; Khalil, H.S. ; Li, L.C.C. ; Norum, W.E.

This paper describes a method for obtaining the parameters of power system controllers and generators while these devices are operating on-line or disconnected from the system. The technique has been developed to work in the presence of random disturbances acting on the system being studied. Wide-band noise is used as an excitation signal on the system and this enables the analyst to obtain a good estimate of time constants with magnitudes that are widely separated, Also the least-squares- parameter-estimator is quite stable and, for the examples used in this paper, convergence to within approximately 2% was obtained with initial estimates in excess of 400% of the true values.

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Power Apparatus and Systems, IEEE Transactions on  (Volume:PAS-101 ,  Issue: 9 )