Saturation Detection-Based Blocking Scheme for Transformer Differential Protection
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Byung Eun | - |
dc.contributor.author | Lee, Jinsik | - |
dc.contributor.author | Won, Sung Ho | - |
dc.contributor.author | Lee, Byongjun | - |
dc.contributor.author | Crossley, Peter A. | - |
dc.contributor.author | Kang, Yong Cheol | - |
dc.date.accessioned | 2021-09-05T07:30:35Z | - |
dc.date.available | 2021-09-05T07:30:35Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-07 | - |
dc.identifier.issn | 1996-1073 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/98146 | - |
dc.description.abstract | This paper describes a current differential relay for transformer protection that operates in conjunction with a core saturation detection-based blocking algorithm. The differential current for the magnetic inrush or over-excitation has a point of inflection at the start and end of each saturation period of the transformer core. At these instants, discontinuities arise in the first-difference function of the differential current. The second-and third-difference functions convert the points of inflection into pulses, the magnitudes of which are large enough to detect core saturation. The blocking signal is activated if the third-difference of the differential current is larger than the threshold and is maintained for one cycle. In addition, a method to discriminate between transformer saturation and current transformer (CT) saturation is included. The performance of the proposed blocking scheme was compared with that of a conventional harmonic blocking method. The test results indicate that the proposed scheme successfully discriminates internal faults even with CT saturation from the magnetic inrush, over-excitation, and external faults with CT saturation, and can significantly reduce the operating time delay of the relay. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | MDPI AG | - |
dc.subject | 3-PHASE POWER TRANSFORMERS | - |
dc.subject | ALGORITHM | - |
dc.subject | COMPUTER | - |
dc.subject | FAULT | - |
dc.subject | RELAY | - |
dc.title | Saturation Detection-Based Blocking Scheme for Transformer Differential Protection | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Byongjun | - |
dc.identifier.doi | 10.3390/en7074571 | - |
dc.identifier.scopusid | 2-s2.0-84904640378 | - |
dc.identifier.wosid | 000339989200030 | - |
dc.identifier.bibliographicCitation | ENERGIES, v.7, no.7, pp.4571 - 4587 | - |
dc.relation.isPartOf | ENERGIES | - |
dc.citation.title | ENERGIES | - |
dc.citation.volume | 7 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 4571 | - |
dc.citation.endPage | 4587 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.subject.keywordPlus | 3-PHASE POWER TRANSFORMERS | - |
dc.subject.keywordPlus | ALGORITHM | - |
dc.subject.keywordPlus | COMPUTER | - |
dc.subject.keywordPlus | FAULT | - |
dc.subject.keywordPlus | RELAY | - |
dc.subject.keywordAuthor | saturation detection based blocking | - |
dc.subject.keywordAuthor | harmonic blocking | - |
dc.subject.keywordAuthor | current differential relay | - |
dc.subject.keywordAuthor | transformer protection | - |
dc.subject.keywordAuthor | operating time delay | - |
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