Please use this identifier to cite or link to this item: https://hdl.handle.net/10321/4355
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dc.contributor.authorNgema, Philanien_US
dc.contributor.authorDavidson, Innocent Ewaenen_US
dc.contributor.authorBuraimoh, Elutunjien_US
dc.date.accessioned2022-10-06T09:41:30Z-
dc.date.available2022-10-06T09:41:30Z-
dc.date.issued2022-08-22-
dc.identifier.citationNgema, P., Davidson, I.E. and Buraimoh, E. 2022. Performance evaluation of percentage differential relays on power transformer and reliability assesment in HVDC grid protection scheme. 2022 IEEE PES/IAS PowerAfrica. Presented at: 2022 IEEE PES/IAS PowerAfrica. doi:10.1109/powerafrica53997.2022.9905301en_US
dc.identifier.urihttps://hdl.handle.net/10321/4355-
dc.description.abstractPercentage differential relays remain the most sensitive protection tool applied as backup protection on power transformers, busbar, and generators. Relays sometimes do mis-operate with the current transformer being affected by external fault leading to saturation, and the subsidence current present after clearing external faults. The cause of misoperation of percentage differential relays cannot be ignored that it entirely depends on magnitudes more than directionality for tripping decisions. This paper covers evaluating differential element performance, analysis of transformer inrush current, internal faults, external faults, and overexcitation conditions. The accurate computing of current transformers is also included. This protection only applies to 10MVA and above on transformers; however, it is not limited to transformers, but also transmission lines, busbars, and generators. The balance of the paper is on reliability assessment based on the HVDC grid protection scheme operationen_US
dc.format.extent5 pen_US
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.relation.ispartof2022 IEEE PES/IAS PowerAfricaen_US
dc.subjectDifferential relaysen_US
dc.subjectInrush currentsen_US
dc.subjectPower transformeren_US
dc.subjectCurrent transformersen_US
dc.subjectPercentage restrained relayen_US
dc.titlePerformance evaluation of percentage differential relays on power transformer and reliability assesment in HVDC grid protection schemeen_US
dc.typeConferenceen_US
dc.date.updated2022-10-04T17:55:46Z-
dc.identifier.doi10.1109/powerafrica53997.2022.9905301-
local.sdgSDG07-
item.grantfulltextopen-
item.cerifentitytypePublications-
item.openairetypeConference-
item.languageiso639-1en-
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:Research Publications (Engineering and Built Environment)
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