Title:	Instantaneous-power-based busbar numerical differential protection
Authors:	Moreno Vásquez, Francis Arody Silva, Kleber Melo e
metadata.dc.identifier.orcid:	https://orcid.org/0000-0001-9880-3984 https://orcid.org/0000-0003-0847-4545
Assunto::	Proteção diferencial Potência instantânea
Issue Date:	2019
Publisher:	IEEE
Citation:	VASQUEZ, Francis A. Moreno; SILVA, Kleber Melo e. Instantaneous-power-based busbar numerical differential protection. IEEE Transactions on Power Delivery, v. 34, n. 2, abr. 2019. DOI: 10.1109/TPWRD.2019.2896035. Disponível em: https://ieeexplore.ieee.org/document/8628998.
Abstract:	This paper presents a new method for busbar differential protection based on the instantaneous power concept. In order to do so, the instantaneous power per phase of each network element connected to the busbar is computed by using the instantaneous current values and a voltage memory action strategy. The performance of the proposed technique is compared to one of the traditional instantaneous-current-based differential protection algorithms, which is widely used by manufacturers of commercial relays. Both internal and external faults, as well as evolving external-to-internal faults, were simulated in a power substation with double-bus single-breaker configuration using the software ATPDraw. The obtained results reveal that the proposed algorithm is twice or more faster than the traditional instantaneous-currentbased algorithm for most of the internal and evolving external-tointernal faults, while ensuring secure operation for external ones even when severe current transformer (CT) saturation takes place, through a new harmonic power restraint strategy. Also, since the proposed method provides faster fault detection time, the requirements for CT time to saturate may be alleviated, guaranteeing correct operation even in the case of early CT saturation.
DOI:	10.1109/TPWRD.2019.2896035
metadata.dc.relation.publisherversion:	https://ieeexplore.ieee.org/document/8628998
Appears in Collections:	Artigos publicados em periódicos e afins

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