Evaluation Of Efficiency Reducing Factors In Power Transformers Winding Insulation

摘要

Electric power system instability has been an aged-long problem in the power industries and tothe end users devastating economic bottle neck. A lot of works have been carried out addressing this issue at thedistribution levels but not in the transmission grid especially with respect to power transformer which is theprimary component in the electric power system after generation.Switching effects in large high voltage power transformers may lead to power system instability anddegradation of vital electrical power protection and control equipment which will in turn affect the quality ofpower generated by the power systems network (Efficiency). Currently, researches are being carried to improvethe reliability of existing power system infrastructure by minimizing some of these effects. This paperinvestigates the pertinent issues on the switching effects on power transformers due to inrush currents andreviews the state of art approaches to wards its mitigation leading to power and energy improvements. Thework has been able to establish process for isolation, diversion and inhibition of primary winding currents aswell as eliminating the magnetizing residue flux using an all-inclusive and intelligent technique that is wellaffordable.