Original scientific paper

New developments in dry-type technology

Ahmet Kerem Köseoğlu

Abstract

Today, dry-type transformers ratings could go up to 63 MVA, and voltage levels of 145 kV are achieved. This article will share some new trends in dry-type transformers and some challenges that technology faces. Technology is developed with new demands of the market, and manufacturers are racing with each other to find optimization points for both manufacturing and design. Dry-type technology is mostly quartzfilled, or glass-fibre reinforced, but recently, VPI became a popular solution for some specific applications. The size of the transformer differs with the application; new materials challenge the old ones depending on demands. When compared with oil-filled equivalent, drytype is larger in size and generally more expensive, but when it comes to fire safety, vibration withstand ability, less maintenance, and blast(ex)-proof applications, dry-type is the number one choice.

Keywords

dry-type transformer technology, manufacturing of dry-type transformers, new applications in dry-type transformers

Hrčak ID:

267208

URI

https://hrcak.srce.hr/267208

Publication date:

17.11.2021.

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