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Improvement of transformer differential protection to discriminate internal faults and inrush currents / Wael Hamdy Mahmoud Yousef ; Supervised Essam Eldin Abouelzahab , Doaa Khalil Ibrahim

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Wael Hamdy Mahmoud Yousef , 2010Description: 93P. : charts ; 30cmOther title:
  • تحسين أداء الوقاية النفاضلية للمحولات بالتفرقة بين تيارات الاندفاع المغناطيسى وتيارات الأعطال [Added title page title]
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Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines Summary: Proposed differential protection approach is introduced for high quality large power transformers that have low inrush currents of about 3.14 times rated currents . Such transformers have low second harmonic level which results in conventional differential protection malfuntion . The proposed scheme for internal faults and inrush currents discrimination is based on both Discrete Fourier transform DFT and Discrete Wavelet Transform DWT
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.07.M.Sc.2010.Wa.I (Browse shelf(Opens below)) Not for loan 01010110055000000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.07.M.Sc.2010.Wa.I (Browse shelf(Opens below)) 55000.CD Not for loan 01020110055000000

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines

Proposed differential protection approach is introduced for high quality large power transformers that have low inrush currents of about 3.14 times rated currents . Such transformers have low second harmonic level which results in conventional differential protection malfuntion . The proposed scheme for internal faults and inrush currents discrimination is based on both Discrete Fourier transform DFT and Discrete Wavelet Transform DWT

Issued also as CD

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