الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
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