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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aPh.D
099 _aCai01.13.07.Ph.D.2020.Ba.A
100 0 _aBasem Abdelhamed Rashad Abdelrazek
245 1 0 _aAdaptive single-end scheme for detecting and locating open conductor faults in HV transmission lines /
_cBasem Abdelhamed Rashad Abdelrazek ; Supervised Mahmoud Ibrahim Gilany , Doaa Khalil Ibrahim , Aboulfotouh Abdelreheem Mohamed
246 1 5 _aنظام مقترح لإكتشاف وتحديد مواقع أعطال فتح الموصلات فى خطوط نقل القوى الكهربية
260 _aCairo :
_bBasem Abdelhamed Rashad Abdelrazek ,
_c2020
300 _a117 P. :
_bcharts ;
_c30cm
502 _aThesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines Engineering
520 _aOpen Conductor Faults (OCFs) are particularly difficult to be detected and located in HV transmission systems using one-end data.The thesis has introduced a novel solution to that problem as a transient-based integrated scheme to identify and locate all kinds of OCFs (OCF from both sides or from one side while the other side is earthed) at different fault conditions. The proposed scheme unit (PSU) has limited mathematical requirements as it doesn't need to apply any artificial intelligence techniques.It only applies one-level Discrete Wavelet Transform (DWT) decomposition without any communication requirements, which ensures PSU as a promising scheme to be practically implemented. The applied threshold values are calculated adaptively depending on the normalized value of the pre-fault current approximation coefficients without any interference from operators. The achieved results approved that PSU is immune to load changing or load/capacitor switching. It has the capability to detect different types of OCFs within only 1.25 cycles and accurately estimates OCFs location with less than 1% error for faults at distance greater than 5% of the line length. Since the traditional distance relays don't detect or locate OCFs at all,the obtained accuracy is well promising
530 _aIssued also as CD
653 4 _aDiscrete Wavelet Transform
653 4 _aFault identification scheme
653 4 _aFault location scheme
700 0 _aAboulfotouh Abdelreheem Mohamed ,
_eSupervisor
700 0 _aDoaa Khalil Ibrahim ,
_eSupervisor
700 0 _aMahmoud Ibrahim Gilany ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aAmira
_eCataloger
905 _aNazla
_eRevisor
942 _2ddc
_cTH
999 _c78205
_d78205