APPLICATION FEATURES OF A TRAVELING WAVE FAULT LOCATOR ON A DOUBLE-CIRCUIT POWER LINE

DOI: 10.47026/1810-1909-2022-3-88-94

УДК 621.311.1-027-044.952

ББК З279-051.1-017

Anastasia G. SEMENOVA, Aleksey O. fedorov, Vladimir s. petrov, Aleksandr M. DMITRENKO

Key words

modal transform, double-circuit power line, traveling wave fault location

Abstract

The accuracy and stability of a single-end traveling wave fault locator directly depend on the correct construction of electrical network model in fault regime. In the regime of ground short circuits this task is complicated by the need to take into account the components of aerial and ground modes of power line in the electrical network of fault regime model. Its incorrect solution leads to a decrease in the accuracy of determining the arrival time of the used traveling wave, which, in turn, decreases the accuracy in calculating the distance to the fault. In order to correctly construct the electrical network of fault regime model and accurately estimate the used traveling wave arrival times in locators, phase-modal transformation is performed. Such a transformation for single-circuit power line can be one of the invariant Clarke, Karrenbauer or Wedepohl transformations. The classical representation of these transformations cannot be directly applied to the electrical values of a double-circuit power line, consisting of six wires and, accordingly, having six independent modes. The purpose of the article is to illustrate the application of the modal transform to divide the electrical values of a double-circuit power line into independent components.

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Information about the authors

Anastasia G. Semenova – Engineer, Power Systems Automation Department, EKRA Ltd, Russia, Cheboksary (semenova_ag@ekra.ru; ORCID: https://orcid.org/0000-0002-0211-5341).

Aleksey O. Fedorov – Post-Graduate Student of Theoretical Foundations of Electrical Engineering and Relay Protection and Automation Department, Chuvash State University; Research Engineer, Power Systems Automation Department, EKRA Ltd, Russia, Cheboksary (fedorov_a@ekra.ru; ORCID: https://orcid.org/0000-0001-8863-5956).

Vladimir S. Petrov – Candidate of Technical Sciences, Assistant Professor, Department of Theoretical Foundations of Electrical Engineering and Relay Protection and Automation, Chuvash State University, Russia, Cheboksary (petrov_vs@ekra.ru; ORCID: https://orcid.org/0000-0002-3667-1442).

Aleksandr M. Dmitrenko – Doctor of Technical Sciences, Professor, Department of Power Supply and Intelligent Electric Power Systems named after A.A. Fedorov, Chuvash State University, Russia, Cheboksary (dmitrenko_am@mail.ru; ORCID: https://orcid.org/0000-0002-4380-3482).

For citations

Semenova A.G., Fedorov A.O., Petrov V.S., Dmitrenko A.M. APPLICATION FEATURES OF A TRAVELING WAVE FAULT LOCATOR ON A DOUBLE-CIRCUIT POWER LINE. Vestnik Chuvashskogo universiteta, 2022, no. 3, pp. 88–94. DOI: 10.47026/1810-1909-2022-3-88-94 (in Russian).

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