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Published Article / I08/1999/I-015 ENY-ARTICLE-2008-150

Adaptive estimation of wide range frequency changes for power generator protection and control purposes

Szafran, J (Wroclaw University of Technology, Poland) ; Rebizant, W (Wroclaw University of Technology, Poland) ; Michalik, M (Wroclaw University of Technology, Poland)


Abstract: A method and a detailed adaptive algorithm for wide-range frequency change measurement is presented. The method is based on a two-stage operating principle in which the results of a coarse frequency measurement are used for both orthogonal filter adjustment and modifications to the basic algorithm that is applied to fine frequency estimation. The adaptive features ensure good selectivity of the algorithm (in the sense of higher and subharmonic attenuation) within the range 5 to 80Hz. Simulation results presented confirm good accuracy of frequency estimation in the presence of a standard noise level in the input signal, as well as satisfactory frequency tracking properties of the algorithm at relatively high frequency changing rates.

Keyword(s): generator ; power system protection
Note: IEE Proceedings. Generation, Transmission and Distribution. 1999 vol. 146, No 1, pp. 31-36.

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Cited by: try citation search for ENY-ARTICLE-2008-150; I08/1999/I-015

Record created 2008-06-01, last modified 2008-06-02

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