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A study on electricity quality problems produced by capacitor switching and protection system false operation / Khaled Galal Ahmed Ghaly ; Supervised Ossama Elsayed Gouda , Adel Zein Eldein Mohamed

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Khaled Galal Ahmed Ghaly , 2017Description: 89 P. : facsimiles , plans ; 30cmOther title:
  • دراسة مشاكل جودة الطاقة الكهربية الناتجة عن توصيل المكثفات و التشغيل الخاطىء لأجهزة الوقاية [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines Summary: Capacitor switching is one of the most important sources of generating transient overvoltage and inrush current of electrical power system. Energizing transient may reduce the life span of capacitor banks, damage of power system equipment and insulation failure. This thesis, presents three technologies used to mitigate transients caused by capacitor switching. ATP program is used to simulate capacitor switching with and without utilizing mitigating methods. On the other hand, this thesis also aims to study the influence of harmonic distortion of non-linear loads on differential relays during internal faults with power transformers such as ground fault in protected zone and winding faults. There are many factors that are considered in the transformer differential protection designing like type of transformer connection, phase shifting and transformer neutral. Presence of harmonic current particularly 2nd and 5{u036D} {u036A} harmonic distortions of current during faults may cause mal-operation or measurement errors relative to protective devices and cause control of monitoring equipment to register improperly
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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.2017.Kh.S (Browse shelf(Opens below)) Not for loan 01010110073805000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.07.M.Sc.2017.Kh.S (Browse shelf(Opens below)) 73805.CD Not for loan 01020110073805000

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

Capacitor switching is one of the most important sources of generating transient overvoltage and inrush current of electrical power system. Energizing transient may reduce the life span of capacitor banks, damage of power system equipment and insulation failure. This thesis, presents three technologies used to mitigate transients caused by capacitor switching. ATP program is used to simulate capacitor switching with and without utilizing mitigating methods. On the other hand, this thesis also aims to study the influence of harmonic distortion of non-linear loads on differential relays during internal faults with power transformers such as ground fault in protected zone and winding faults. There are many factors that are considered in the transformer differential protection designing like type of transformer connection, phase shifting and transformer neutral. Presence of harmonic current particularly 2nd and 5{u036D} {u036A} harmonic distortions of current during faults may cause mal-operation or measurement errors relative to protective devices and cause control of monitoring equipment to register improperly

Issued also as CD

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