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Enhancing overcurrent relay performance using wavelet packet transform / Ahmad Ramadan Adly ; Supervised Mohamed Mamdouh Abdelaziz , Doaa Khalil Ibrahim , Nabil Mohamed Abdelfattah Ayad

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Ahmad Ramadan Adly , 2012Description: 123Leaves : charts , facsimiles ; 30cmOther title:
  • تحسين نظام الوقاية ضد زيادة التيار باستخدام تقنية حزمة المويجة [Added title page title]
Subject(s): Available additional physical forms:
  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines Summary: This these introduces a technique for digital overcurrent protection based on Wavelet Packet Transform (WPT) to detect short circuits faults within wide variation in generating conditions, with very small voltage variation and High-Impedance Faults (HIFs) Besides it examines the load current continuosly and changes the relay pick up value adaptively . WPT is used to estimate proper value for RMS fundamental and hence calculate trip time accurately even that the signals have been contaminated with other harmonics interharmonics or subharmonic
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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.2012.Ah.E (Browse shelf(Opens below)) Not for loan 01010110059457000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.07.M.Sc.2012.Ah.E (Browse shelf(Opens below)) 59457.CD Not for loan 01020110059457000

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

This these introduces a technique for digital overcurrent protection based on Wavelet Packet Transform (WPT) to detect short circuits faults within wide variation in generating conditions, with very small voltage variation and High-Impedance Faults (HIFs) Besides it examines the load current continuosly and changes the relay pick up value adaptively . WPT is used to estimate proper value for RMS fundamental and hence calculate trip time accurately even that the signals have been contaminated with other harmonics interharmonics or subharmonic

Issued also as CD

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