A fuzzy approach for overcurrent relays simulation

Authors:
Hossein Askarian Abyaneh;Hossein Kazemi Karegar;Majid Al-Dabbagh
Affiliations:
Department of Electrical Engineering, Amir Kabir University of Technology, Tehran, Iran;Department of Electrical Engineering, Amir Kabir University of Technology, Tehran, Iran;School of Electrical Engineering and Computer System of RMIT University, Victoria, Melbourne, Australia
Venue:
ICCS'03 Proceedings of the 2003 international conference on Computational science: PartIII
Year:
2003

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Abstract

Accurate models for Overcurrent relays (OC) with inverse time characteristics have an important role for efficient coordination of power system protection devices. This paper proposes a new method for modelling of OC relays based on fuzzy logic. The new model is more accurate than traditional models and has been validated by comparing it with the linear and nonlinear analytical models.