Calculation of Distance Protection Settings in Mutually Coupled Transmission Lines: A Comparative Analysis

José de Jesús Jaramillo Serna and Jesús M. López-Lezama
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José de Jesús Jaramillo Serna: Departamento de Ingeniería Eléctrica, Facultad de Ingeniería, Universidad de Antioquia, calle 70 No 52-21, Medellín 050010, Colombia
Jesús M. López-Lezama: Departamento de Ingeniería Eléctrica, Facultad de Ingeniería, Universidad de Antioquia, calle 70 No 52-21, Medellín 050010, Colombia

Energies, 2019, vol. 12, issue 7, 1-32

Abstract: Protection of mutually coupled transmission lines poses special challenges to protection engineers, since the general principles outlining the expected performance of the protection elements are based on simplified versions of the issues affecting them. Distance protection elements are among the most commonly accepted methods for protecting mutually coupled transmission lines, however, the calculation of settings and the validation of their performance is a complex task, involving lots of simulations and analysis of results to come up with an acceptable solution. Though various methods have been proposed to deal with the problem of calculating the optimal settings of distance protection elements, there is still room for improvement, since these methods have been formulated for the general case considering simple transmission lines. In this paper, a variation of one of these methods is introduced to enhance the computing times and reliability of the solutions for the specific application of quadrilateral distance protection to mutually coupled transmission lines, through the characterization of the expected performance of the operating characteristic, and the formulation of the optimization problem and the solution method. The obtained results show the improvements in computing times and quality of the solution provided by the proposed algorithm.

Keywords: power system protection; mutually coupled transmission lines; optimization; electrical faults; distance protection; earth fault compensation factor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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