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Published Article / I08/1998/I-119 ENY-ARTICLE-2008-160

Simulative Analysis of a New Type Wide Range Estimator of Protection Criterion Values

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


Abstract: In the paper a new adaptive estimator of protection criterion values insensitive to wide range power system frequency changes is proposed and analysed. Its operation is based on a coarse calculation of signal frequency and appropriate correction of used orthogonal filters frequency responses as well as adaptation of chosen parameters of the measurement algorithm. The main features of the new method has been compared with standard criterion values estimators both theoretically and by simulations. The proposed estimators assure good accuracy of measurement within the frequency range from 5 to 95 Hz.

Keyword(s): adaptive estimation ; orthogonal filter ; protection
Note: Proceedings of the 11th International Conference on Power System Protection. PSP '98, Bled, Slovenia 30.September-2.October 1998. Ljubljana : Faculty of Electrical Engineering, 1998. pp. 53-58

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Record created 2008-09-19, last modified 2008-09-20

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