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Title: Optimal coordination of over-current relays using modified differential evolution algorithms
Authors: Thangaraj R.
Pant M.
Deep, K.
Published in: Engineering Applications of Artificial Intelligence
Abstract: Optimization of directional over-current relay (DOCR) settings is an important problem in electrical engineering. The optimization model of the problem turns out to be non-linear and highly constrained in which two settings namely time dial setting (TDS) and plug setting (PS) of each relay are considered as decision variables; the sum of the operating times of all the primary relays, which are expected to operate in order to clear the faults of their corresponding zones, is considered as an objective function. In the present study, three models are considered namely IEEE 3-bus model, IEEE 4-bus model and IEEE 6-bus model. To solve the problem, we have applied five newly developed versions of differential evolution (DE) called modified DE versions (MDE1, MDE2, MDE3, MDE4, and MDE5). The results are compared with the classical DE algorithm and with ive more algorithms available in the literature; the numerical results show that the modiied DE algorithms outperforms or perform at par with the other algorithms. © 2010 Elsevier Ltd. All rights reserved.
Citation: Engineering Applications of Artificial Intelligence (2010), 23(5): 820-829
Issue Date: 2010
Publisher: Elsevier Ltd
Keywords: Constrained optimization
Laplace mutation
Modified differential evolution
Over-current relay coordination
Quadratic interpolation
ISSN: 9521976
Author Scopus IDs: 24345289500
Author Affiliations: Thangaraj, R., Department of Paper Technology, IIT Roorkee, Saharanpur 247 001, India
Pant, M., Department of Paper Technology, IIT Roorkee, Saharanpur 247 001, India
Deep, K., Department of Mathematics, IIT Roorkee, Roorkee 247 667, India
Corresponding Author: Thangaraj, R.; Department of Paper Technology, IIT Roorkee, Saharanpur 247 001, India; email:
Appears in Collections:Journal Publications [MA]

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