MedPower 2014 2014
DOI: 10.1049/cp.2014.1698
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A new algorithm for transformer ground fault protection

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“…The restricted earth fault (REF) protection scheme is designed to respond to such earth faults [2]. But, current transformer (CT) saturation caused by either the magnetizing inrush currents or severe external faults may make the REF relay *Corresponding Author Institutional Email: mehdi.hosseini@nit.ac.ir (S. M. Hosseini) maloperate [3][4][5]. It should be noted that the strictly CT dimensioning can improve the protection system immunity against CT saturation; however, the issue is not solved completely [6].…”
Section: Introductionmentioning
confidence: 99%
“…The restricted earth fault (REF) protection scheme is designed to respond to such earth faults [2]. But, current transformer (CT) saturation caused by either the magnetizing inrush currents or severe external faults may make the REF relay *Corresponding Author Institutional Email: mehdi.hosseini@nit.ac.ir (S. M. Hosseini) maloperate [3][4][5]. It should be noted that the strictly CT dimensioning can improve the protection system immunity against CT saturation; however, the issue is not solved completely [6].…”
Section: Introductionmentioning
confidence: 99%