Improved fuzzy logics based differential protection scheme
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
International Power Engineering and Optimization Conference
Abstract
In this research work, fuzzy logics based
differential protection scheme is proposed for power
transformer. Membership functions are developed
from voltage, frequency and currents at primary side
and secondary side of the power transformer. The
proposed protection scheme senses the operating
conditions and gives trip or no trip signal to the
circuit breaker from the fuzzy inference of the small,
medium and high values of the membership
functions. Simulation results of various operating
conditions, shows that the proposed differential relay
is reliable, fast and is able to discriminate between
internal faults, external faults and magnetizing inrush
current. Results also demonstrate selective phase
switching and auto-reclosing function of the
protection scheme. Fuzzy logics based protection
scheme is modeled in MATALAB-SIMULINK
environment.
Description
Keywords
Auto re-closing, Fuzzy Inference, Fuzzy Logics, Membership Functions, Selective Phase Switching
Citation
Haris, M., M. Salik, et al. (2013). Improved fuzzy logics based differential protection scheme. Power Engineering and Optimization Conference (PEOCO), 2013 IEEE 7th International, IEEE.