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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aPh.D
099 _aCai01.13.07.Ph.D.2019.Al.I
100 0 _aAli Hussein Hadi Alkhalil
245 1 0 _aImproving distance relay performance for statcom-compensated transmission lines /
_cAli Hussein Hadi Alkhalil ; Supervised Mahmoud Ibrahim Gilany
246 1 5 _aتحسين أداء جهاز الوقاية المسافية فى خطوط النقل ذات المعوض الثابت المتزامن
260 _aCairo :
_bAli Hussein Hadi Alkhalil ,
_c2019
300 _a99 P. :
_bphotographs ;
_c30cm
502 _aThesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines
520 _aThis thesis proposes a new technique for estimating an accurate apparent impedance in systems equipped with STATCOM device at its midpoint. The main goal of this thesis is to eliminate the impacts of both the shunt current of the STATCOM device and the fault resistance on apparent impedance calculation in order to obtain accurate fault distance. The technique depends on synchronizing phasors measurement units (SPMUs) to transmitted data from the midpoint connection and from the receiving end to the relay at sending end. The fault resistance is mathematically calculated based on active power values at sending and receiving ends. Unlike the published methods, which are valid only if the fault resistance is much larger than the TL resistance, the proposed method is valid whatever the value of fault resistance compared to the TL resistance. Moreover, the proposed method is valid for both ground and phase faults. The proposed algorithm is extensively investigated on part of a 400 kV, 50 Hz power grid consists two series transmission lines with three generating sources. The STATCOM FACTS device is assumed to be connected at midpoint of line. The achieved results ensure the effectiveness of the proposed method
530 _aIssued also as CD
653 4 _aImproved mho distance rely
653 4 _aSPMUs
653 4 _aStatcom device
700 0 _aMahmoud Ibrahim Gilany ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSamia
_eCataloger
942 _2ddc
_cTH
999 _c75208
_d75208