000			02745cam a2200325 a 4500
003			EG-GiCUC
005			20250223031654.0
008			170225s2016 ua h f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.07.M.Sc.2016.Ah.C
100	0		_aAhmed Rabee Kamel Sayed
245	1	0	_aComparative feasibility of using passive shielding to mitigate power lines{u2019} magnetic fields / _cAhmed Rabee Kamel Sayed ; Supervised Hussein I. Anis
246	1	5	_aالجدوى المقارنة لإستخدام الدرع غير الفعال لتخفيف المجالات المغناطيسية لخطوط القوى
260			_aCairo : _bAhmed Rabee Kamel Sayed , _c2016
300			_a81 P. : _bfacimiles ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines
520			_aIn this thesis, a systematic semi-heuristic method (genetic algorithm) is employed to produce optimal reduction in overhead power lines{u2019} magnetic field. Passive shielding is applied on different power lines with two different phase arrangements and different configurations. The research also explores the effectiveness of the series capacitive compensation on the mitigation performance. Studying the mitigation effectiveness is not only at a certain point such as ROW edge, but everywhere around the line. For this purpose, zone-based mitigation is presented by modifying the objective function to be based on a specific geographic domain, at which magnetic field is desired to be minimal. To obtain the feasibility of magnetic field mitigation for a power line, the cost of passive shielding is modeled. The cost model contains four basic elements, namely, cost of shield conductors, cost of power losses, cost of support structures, and cost of capacitive compensation. Genetic algorithm is used to handle passive shielding with its cost as a multi-objective problem. The problem is made up of two main objective functions: maximization of the magnetic field reduction and minimization of the cost of mitigation. Pareto optimal set which gives the relation between optimal cost and reduction in magnetic field is presented. A new index which measures the feasibility and effectiveness of mitigation of a line is defined and formulated. This index is called 2Feasibility Index3
530			_aIssued also as CD
653		4	_aMagnetic fields mitigation
653		4	_aPassive shielding
653		4	_aPower lines
700	0		_aHussein I. Anis , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aShaima _eCataloger
942			_2ddc _cTH
999			_c59967 _d59967