Ahmad Moradnouri - Electrical Engineering Department, Center of Excellence in Power System Management and Control Sharif University of Technology Tehran, Iran
Mehdi Vakilian - Electrical Engineering Department, Center of Excellence in Power System Management and Control Sharif niversity of Technology Tehran, Iran
Zahra Nasiri-Gheidari - Electrical Engineering Department, Center of Excellence in Power System Management and Control Sharif niversity of Technology Tehran, Iran

In this paper different analytical methods for shortcircuit force calculation in transformers are presented.Multiobjective design of 3D-wound core and core typetransformers using genetic algorithm carried out to reducetransformer mechanical failure rate and transformer totalowning cost simultaneously. Resulted pareto-fronts ofmultiobjective design reveal that with equal total owning cost,3D-wound cores have significantly lower short circuit forces andstresses. On the other hand, under equal short circuit forces andstresses, a 3D-wound core transformer of the same ratingpreserves a lower total owning cost.

3D-Wound Core Transformer; Core Type Transformer; Multiobjective Design; Genetic Algorithm; Transformer Short Circuit Electromagnetic Forces; Transformer Total Owning Cost