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_aEG-GICUC _beng _cEG-GICUC _dEG-GICUC _erda |
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_aeng _beng _bara |
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049 | _aDeposit | ||
082 | 0 | 4 | _a621.3 |
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_a621.3 _221 |
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097 | _aPh.D | ||
099 | _aCai01.13.07.Ph.D.2024.Sa.O | ||
100 | 0 |
_aSamar Akef Abbass Ahmed, _epreparation. |
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245 | 1 | 0 |
_aOptimum design for hvdc grounding converter station / _cby Samar Akef Abbass Ahmed ; Supervision Prof. Dr.Ahdab M.K. El-Morshedy, Prof. Dr. Mohamed Mahmoud Samy. |
246 | 1 | 5 | _aالتصميم الأمثل لشبكة أرضى لمحطة تحويل جهد عالى مستمر / |
264 | 0 | _c2024. | |
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_a58 pages : _billustrations ; _c30 cm. + _eCD. |
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_atext _2rda content |
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_aUnmediated _2rdamedia |
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_avolume _2rdacarrier |
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502 | _aThesis (Ph.D)-Cairo University, 2024. | ||
504 | _aBibliography: pages 55-58. | ||
520 | _aThis work presents an optimal model for designing a ground system for a DC converter station for a DC voltage transmission line with a capacity of ±500 KV. The PSCAD program was used to model the line and calculate the short-circuit current in case of fault. A simulation of the station's entire grounding system was performed, and the step voltage and touch voltage were calculated using the CYMGRD program, which is based on the Two Layer Method in calculating soil resistance. Actual measurements of heterogeneous and irregular soil resistivity were used in the modeling. The soil resistance, touch, step, and surface efforts were calculated, and the safe limit for touch and step efforts that directly affect humans was calculated. The charge simulation method was used to calculate the electrical resistance of the transformer grounding station of the high-voltage direct current transmission line using the MATLAB program. The factors affecting soil resistance were studied and a separate analysis was performed. The model was built in the laboratory to verify the method of simulating the charge, measuring the electrical resistance from it, comparing the results with it, and calculating the percentage of fault. Precise calculation of the DC electric potential at the ground level and the grounding converter stations of the transmission lines is a very important aspect of the transmission line design. A quantitative description of the electric potential around DC high voltage transmission lines converter stations and grounding resistance calculations has been presented in much research but it still needs further investigatio | ||
520 | _aيقدم هذا العمل نموذجا أمثل لتصميم نظام أرضى لمحطة تحويل تيار مستمر لخط نقل جهد تيار مستمر ذو القدرة ±500 ك.ف . تم إستخدام برنامج PSCAD لعمل نمذجة للخط وحساب تيار القصر فى حالة الخطأ. تم عمل محاكاة لنظام التأريض بالكامل الخاص بالمحطة وحساب جهد الخطوة وجهد اللمس باستخدام برنامج CYMGRD والذى يعتمد على طريقة Two Layer Method فى حساب مقاومة التربة. تم أستخدام قياسات فعلية لمقاومة تربة غير متجانسة وغير منتظمة فى النمذجة. تم حساب مقاومة التربة وجهود اللمس والخطوة والسطح وتم حساب الحد الآمن لجهود اللمس والخطوة التى تؤثر بشكل مباشر على الإنسان. تم إستخدام طريقة محاكاة الشحنة (Charge simulation method) لحساب المقاومة الكهربية لمحطة تأريش المحول لخط نقل تيار الجهد العالى المستمر بإستخدام برنامج MATLAB . تم دراسة العوامل المؤثرة على مقاومة التربة وعمل تحليل منفصل لها. تم بناء النموذج معملياً للتحقق من طريقة محاكاة الشحنة وقياس المقاومة الكهربية منها ومقارنة النتائج معها وحساب نسبة الحطأ. | ||
530 | _aIssues also as CD. | ||
546 | _aText in English and abstract in Arabic & English. | ||
650 | 7 |
_aElectrical Engineering _2qrmak |
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653 | 0 |
_aGrounding _aTouch and Step Potentials _aCYMGRD _aCharge simulation method _aHealth effect. |
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700 | 0 |
_aAhdab M. El.Morshedy _ethesis advisor. |
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700 | 0 |
_aMohamed Mahmoud Samy _ethesis advisor. |
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_b01-01-2024 _cAhdab M. El.Morshedy. _cMohamed Mahmoud Samy _dOsama E. Gouda _dMousa A. Abd-Allah _UCairo University _FFaculty of Engineering _DDepartment of Electrical Power and Machines Engineering |
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_aShimaa _eHuda |
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_2ddc _cTH _e21 _n0 |
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999 | _c171185 |