June 9, 2019
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New Fault-Resistance Estimation Algorithm for Rotor-Winding Ground-Fault Online Location in Synchronous Machines With Static Excitation

Publicated to: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS. 62 (3): 1901-1911 - 2015-03-01 62(3), DOI: 10.1109/TIE.2014.2336612

Authors:

Blánquez, FR; Rebollo, MAE; Blázquez, F; Platero, CA
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Affiliations

Univ Politecn Madrid, ETSII, Dept Elect Engn, E-28006 Madrid, Spain - Author

Abstract

This paper presents a new algorithm for estimating the ground-fault resistance value in rotor windings. This new algorithm is an improvement of an online ground-fault location method previously presented. This location method is suitable for synchronous generators with static excitation, whose excitation field winding is fed by controlled rectifiers through an excitation transformer. The estimation of the fault resistance is obtained through the comparison between the third-harmonic voltage measured in a grounding resistance placed in the neutral of the excitation transformer and the third-harmonic voltage calculated by the algorithm. This latter variable is obtained with the dc component of the output voltage of the controlled rectifier and the ac supply voltage of this converter. The fault resistance value is used in the novel technique of online ground-fault location, and it allows improving the accuracy of the location of the defect. This new algorithm, integrated in the complete location method, has been tested with satisfactory results in a 5-kVA laboratory synchronous generator and in a 106-MVA hydrogenerating unit.
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Keywords

AlternatorsAsymmetriesDiagnosisEccentric rotorFault detectionFault diagnosisFault locationFrequencyGeneratorsInduction machinesMotor-drivesProtectionRotating machinesRotors

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2015, it was in position 4/256, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Electrical & Electronic.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-27:

  • WoS: 11
  • Scopus: 17
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Impact and social visibility

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/41310/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 399
  • Downloads: 583
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Blanquez, Francisco R.) and Last Author (PLATERO GAONA, CARLOS ANTONIO).

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