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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fuzzy adaptive setting for time-current-voltage based overcurrent relays in distribution systems

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Author(s):
Momesso, Antonio E. C. [1] ; Bernardes, Wellington Maycon S. [1, 2] ; Asada, Eduardo N. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Elect & Comp Engn, BR-13566590 Sao Carlos, SP - Brazil
[2] Fed Inst Educ Sci & Technol South Minas Gerais, Dept Comp Sci, BR-37890000 Muzambinho, MG - Brazil
Total Affiliations: 2
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS; v. 108, p. 135-144, JUN 2019.
Web of Science Citations: 4
Abstract

In this paper an adaptive protection system based on the Fuzzy Logic for the adjustment of the overcurrent relay's pick-up currents with instantaneous and current-voltage based inverse-time units is proposed. In the methodology two variables are taken into consideration: the pre-fault current and the variation of current, which define various classes of the pick-up currents. This characteristic gives an adaptive behavior in the sense of accepting modified actuation curves. The framework for modeling and simulation was the Alternative Transients Program - The Electromagnetic Transients Program (ATP-EMTP). Due to the flexibility provided by the method, which allows the incorporation of new logic or changes on decision making, it resulted in an adaptive method that presented good performance by automatically following changes on the system operation condition and increased the sensitivity of the overcurrent protection. Tests with different short-circuit impedance in a distribution system with Distributed Generator (DG) have been carried out. (AU)

FAPESP's process: 14/27342-1 - Intelligent and hybrid techniques for the resolution of power systems problems
Grantee:Eduardo Nobuhiro Asada
Support type: Regular Research Grants
FAPESP's process: 12/25292-1 - Analysis of the power system protection using modern heuristic optimization techniques
Grantee:Wellington Maycon Santos Bernardes
Support type: Scholarships in Brazil - Doctorate