Sharif Digital Repository

Transformer is one of the most important equipments in power systems which its reliable performance plays a vital role in increasing of power system's reliability regarding to its importance. Traditionally, designers of transformer consider transformer's parameter under "Usual Service Conditions" but the challenge which has been brought up in contrast to this approach in recent years, is wide applications of non-linear loads in different levels of power systems, especially in its distribution level. Use of non-linear loads leads to flow of non-sinusoidal load current. Hence, Power Quality indexes have been distorted in power systems. Passing non-sinusoidal load current through transformer...