Print Email Facebook Twitter A Clarke-Wavelet-Based Time-Domain Power Transformer Differential Protection Title A Clarke-Wavelet-Based Time-Domain Power Transformer Differential Protection Author Medeiros, R.P. (UFERSA) Costa, F.B. (UFRN) Silva, K.M. (UnB) de Jesus Chavez, Jose (TU Delft Intelligent Electrical Power Grids) Popov, M. (TU Delft Intelligent Electrical Power Grids) Lima Junior, J.R. (UPE) Date 2022 Abstract Phasor-based differential protection is widely used as the main protection function of the power transformer due to its reliability and ability to discriminate internal from external faults and inrush currents. However, these methods present some delays due to phasor convergence during the fault occurrence and can fail during challenging situations, such as transformer energizations with low second-harmonic content and turn-to-turn and turn-to-ground internal faults. This paper proposes a novel time-domain power transformer differential protection based on Clarke and wavelet transforms with only one differential unit and with automatic setting to be used in any power transformer. Considering both actual and simulation data, the performance validation reveals that the proposed method is efficient, ultra-fast, simple, and independent of the fundamental and harmonic components of the differential current. The method was also implemented in a real-time digital simulator to demonstrate its practical feasibility. Subject Power transformersDifferential protectionWavelet transformClarke transformATP-EMTPRTDS To reference this document use: http://resolver.tudelft.nl/uuid:86cc4907-d032-44b8-a688-b5b99b0d6679 DOI https://doi.org/10.1109/TPWRD.2021.3059732 Embargo date 2022-03-30 ISSN 0885-8977 Source IEEE Transactions on Power Delivery, 37 (1), 317-328 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 R.P. Medeiros, F.B. Costa, K.M. Silva, Jose de Jesus Chavez, M. Popov, J.R. Lima Junior Files PDF A_Clarke_Wavelet_Based_Ti ... ection.pdf 2.18 MB Close viewer /islandora/object/uuid:86cc4907-d032-44b8-a688-b5b99b0d6679/datastream/OBJ/view