Kuru Tip Transformatörlerin Dış Ortamlarda Kullanılabilmesi İçin Deneysel Ve Simülasyon Ile Termal Analizine Yeni Yaklaşım

Year 2019, Volume: 24 Issue: 2, 103 - 114, 30.08.2019

Murat Toren , Mehmet Celebi

https://doi.org/10.17482/uumfd.459339

Abstract

Kuru tip transformatörlerin
(KTT) yağlı tip transformatörlere göre avantajları göz önünde
bulundurulduğunda, dış mekânlarda da kullanılabilir duruma getirilmesi bu
çalışmanın esas amacını oluşturmaktadır. Bu noktadan yola çıkılarak ilk önce 1500 VA kuru tip transformatörün termal kamera ile çekirdek ve
sargılarındaki sıcaklıklar ölçülmüştür. Böylelikle transformatörün çalışma
sırasında ulaşabileceği en yüksek sıcaklık değeri elde edilmeye çalışılmıştır.
Fiziksel model baz alınarak elde edilen tasarım değerleri ile Ansys programında
tasarlanan KTT simüle edilmiş, çıkışın yüklü durumunda en yüksek sıcaklık
değeri ile gerçek değer karşılaştırılarak simülasyon test edilmiştir. Daha sonra
bu elde edilen sıcaklık değerine göre trafonun dış ortamlarda da
kullanılabilmesi için bir mahfaza tasarlanmıştır. 1500 VA KTT’nin termal kamera
test düzeneği ile ölçülen 129 ° C en sıcak nokta sıcaklık değerinin Ansys
Fluent (Ansys Inc., Canonsburg, PA, ABD) ile simüle edilen tabi soğutmalı  mahfaza 
içindeki sıcaklık ile aynı olduğu görülmüştür. KTT' nin zorlamalı
soğutma alanındaki sıcaklığı, yaklaşık % 4,6 azalarak 123 ° C'ye
düşürülmektedir. Bu şekilde tasarlanan yeni mahfaza, transformatörün dış mekânlarda
kullanılabilirliğini sağlamakta ve elde edilen düşük sıcaklık KTT' nin kullanım
ömrünü de artırmaktadır, dolayısıyla maliyetini de düşürmektedir.

Keywords

Kuru tip transformatör, termal analiz, faydalı ömür, en yüksek sıcaklık

EXPERIMENTAL AND SIMULATING OF DRY-TYPE TRANSFORMER THERMAL ANALYSIS WITH A NEW APPROACH FOR OUTDOOR APPLICATIONS

Abstract

Since dry type transformers (DTT) has many advantages
over the oily ones, this study focuses on the realibity, feasibility and cost
of DTT to be used at outdoor applications. On this respect the core and winding
temperatures of the 1500 VA DTT transformer model is measured by thermal camera
The operational highest temperature of the transformer is obtained by this way.
The DTT is simulated by ANSYS with the design parameters based On the physical
model, and the simulation values and the real ones are compared to satisfy the
procedure. Then in the light of simulation results, an outer cover is designed
for outdoor applications which is the goal of the paper. The real hot spot
temperature of the 1500 VA DTT is 129 ° C remains the same with the new cover
simulation designed DTT that naturally cooled. Furthermore, the temperature of
the new design DTT is reduced by about 4.6% to 123 ° C by forced cooling. So
the new cover design not only provide to be used at outdoors applications, it
also increases the lifetime of the device, and reduces the operation costs.

Keywords

Dry-type transformer, thermal analysis, lifetime, hot spot temperature

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