Integral Approach-Based Sensitive Protection of Autotransformers for Turn-to-Turn Faults.

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Title: Integral Approach-Based Sensitive Protection of Autotransformers for Turn-to-Turn Faults.
Authors: Solak, Krzysztof1 (AUTHOR), Rebizant, Waldemar1,2 (AUTHOR) waldemar.rebizant@pwr.edu.pl, Mieske, Frank1,2 (AUTHOR)
Source: Energies (19961073). Jul2025, Vol. 18 Issue 13, p3273. 17p.
Subjects: Electric power system protection, Integral calculus
Abstract: Current differential protection, using either phase currents or negative-sequence components, is commonly applied for the sensitive protection of power transformers. However, this method proves insufficient for autotransformers, particularly when their tertiary winding is fully loaded, as demonstrated in this paper. To address this limitation, the authors' previously proposed negative-sequence integral approach for power transformers has been adapted and evaluated for three-winding autotransformers. The results show that this integral protection offers significantly higher sensitivity than current differential schemes while maintaining security during external faults with current transformer saturation. [ABSTRACT FROM AUTHOR]
Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 186600983
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PubTypeId: academicJournal
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  Label: Title
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  Data: Integral Approach-Based Sensitive Protection of Autotransformers for Turn-to-Turn Faults.
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  Data: <searchLink fieldCode="AR" term="%22Solak%2C+Krzysztof%22">Solak, Krzysztof</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rebizant%2C+Waldemar%22">Rebizant, Waldemar</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> waldemar.rebizant@pwr.edu.pl</i><br /><searchLink fieldCode="AR" term="%22Mieske%2C+Frank%22">Mieske, Frank</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Jul2025, Vol. 18 Issue 13, p3273. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Electric+power+system+protection%22">Electric power system protection</searchLink><br /><searchLink fieldCode="DE" term="%22Integral+calculus%22">Integral calculus</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Current differential protection, using either phase currents or negative-sequence components, is commonly applied for the sensitive protection of power transformers. However, this method proves insufficient for autotransformers, particularly when their tertiary winding is fully loaded, as demonstrated in this paper. To address this limitation, the authors' previously proposed negative-sequence integral approach for power transformers has been adapted and evaluated for three-winding autotransformers. The results show that this integral protection offers significantly higher sensitivity than current differential schemes while maintaining security during external faults with current transformer saturation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/en18133273
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      – Code: eng
        Text: English
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        PageCount: 17
        StartPage: 3273
    Subjects:
      – SubjectFull: Electric power system protection
        Type: general
      – SubjectFull: Integral calculus
        Type: general
    Titles:
      – TitleFull: Integral Approach-Based Sensitive Protection of Autotransformers for Turn-to-Turn Faults.
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            NameFull: Solak, Krzysztof
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            NameFull: Rebizant, Waldemar
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            NameFull: Mieske, Frank
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            – D: 01
              M: 07
              Text: Jul2025
              Type: published
              Y: 2025
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              Value: 13
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            – TitleFull: Energies (19961073)
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