A new pilot directional protection method for HVDC line based on the polarity of inductive energy

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dc.contributor.authorMa, Jingen
dc.contributor.authorKang, Jingyaen
dc.contributor.authorZhou, Yiqingen
dc.contributor.authorWu, Yuchongen
dc.contributor.authorCheng, Pengen
dc.date.accessioned2022-04-07T12:10:26Zen
dc.date.available2022-04-07T12:10:26Zen
dc.date.issued2021-11en
dc.description.abstractConcerning the poor immunity of DC line protection to fault resistance in the case of internal fault and its mal-operation proneness in the case of external fault, a new pilot directional protection scheme for HVDC line in AC/DC hybrid system based on the polarity of inductive energy is proposed. First, by analysing the conducting state of converter at different time sections, the impedance characteristic equations of converter in different commutation failure scenes are derived. On this basis, by combining the impedance characteristics of other components in DC system, the fault component network of an AC/DC hybrid system consisting of inductive impedances is established. Then, according to the difference in the flowing direction of the inductive energy in the fault component networks of internal and external faults, a protection criterion for identifying internal and external faults is constructed. Finally, simulation tests in RT-LAB verify that, the proposed method can accurately identify internal and external faults in different fault cases, unaffected by commutation failure and lightning interference and highly immune to the fault resistance. Besides, the proposed method does not involve real-time interaction of synchronous information, thus it is simple and reliable.en
dc.description.notesNationalNatural Science Foundation ofChina, Grant/AwardNumber: 51822703en
dc.description.sponsorshipNationalNatural Science Foundation ofChinaNational Natural Science Foundation of China (NSFC) [51822703]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1049/gtd2.12253en
dc.identifier.eissn1751-8695en
dc.identifier.issn1751-8687en
dc.identifier.issue22en
dc.identifier.urihttp://hdl.handle.net/10919/109582en
dc.identifier.volume15en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleA new pilot directional protection method for HVDC line based on the polarity of inductive energyen
dc.title.serialIET Generation Transmission & Distributionen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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