Large auto-transformers are commonly employed for interconnecting power networks with varying voltage levels, such as from 400 kV to 230 kV, and from 230 kV to 132 kV. When the voltage levels of two transformer systems are closely matched, opting for an auto-transformer proves to be more cost-effective than using a transformer with separate windings. Additionally, auto-transformers boast smaller physical dimensions compared to their separate winding counterparts, while delivering equivalent power output.
Designing auto-transformers entails meticulous calculations to address specific complexities. This includes accurate assessment of leakage flux within the active components, precise determination of losses under different load conditions, evaluation of transient voltage behavior, thorough analysis of electric field dynamics to ensure robust insulation, and examination of electro-dynamic forces during short-circuit scenarios. Arya Transfo harnesses advanced software tools and the expertise of seasoned engineers to undertake the design, production, and testing of these specialized transformers.more information