Abstract
Bu makalede, Amorf nüveli transformatörün sıcaklık analizini detaylı incelemek için, ısı transferi, akışkan akışı ve elektromanyetik analizlerini kapsayan çok disiplinli bir yaklaşım kullanılmıştır. Transformatörün bobini ve çekirdeğindeki güç kayıpları incelenip, sıcaklık ve akışkan akış analizleri elektromanyetik bir model ile birleştirilmiştir. Önerilen yöntem, Amorf çekirdekli gibi özel transformatörlerde, önceki noktasal sıcaklık bilgisine ya da sıcaklık Gradyan değerlerine ihtiyaç duymadan, sıcaklık değişimini detaylı olarak tahmin edebilmektedir. Teorik çalışma sonuçları uluslararası standartlara göre Dyn11, 34.5/0.4-kV, 630-kVA’lik amorf çekirdekli transformatör üzerine uygulanan deneysel çalışma sonuçlarıyla doğrulanmıştır. Teorik ve pratik çalışma sonuçlarının karşılaştırılması, sonuçların büyük bir uyum içinde olduğunu göstermekte olup, kullanılan yöntem genç mühendislere güç transformatörlerin sıcaklık analiz çalışmalarında faydalı bir araç oluşturmaktadır.
References
- Amoiralis,E., Tsili,M., Kladas, A.,2009 .Transformer design and optimization: a literature survey. IEEE transactions on Power Delivery ,24 (4), 1999-2024.
- Aina,H ., Anding,W ., Shiqiang.,Y.,2016 .Dynamic magnetic characteristics of Fe78Si13B9 amorphous alloy subjected to operating temperature. Journal of Magnetism and Magnetic Materials, 408, 159–163.
- Azuma,D., iIto,N. , Ohta,M., 2020.Recent progress in Fe-based amorphous and nano-crystalline soft magnetic materials. Journal of Magnetism and Magnetic Materials, 501,230-242.
- Dianchun,Z., Jiaxiang,Y., Zhenghua,W.,2000 .Thermal field and hottest spot of the ventilated dry-type transformer. Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials, 1, 141–143.
- El Wakil,N., Chereches.,N.,Padet,j.,2006. Numerical study of heat transfer and fluid flow in a power transformer. International journal of thermal science, 45, 615–626.
- IEEE Guide for Loading Mineral-Oil-Immersed Transformers, IEEE Standard C57.91-1995
- Li,j., Estévez, D ., Jiang,K .,2014 .Electronic-structure origin of the glass-forming ability and magnetic properties in Fe–RE–B–Nb bulk metallic glasses. Journal of Alloys and Compounds, 617, 332-336.
- Lin,N., Liu,P., Dinavahi,V., 2020 . Component-Level Thermo-Electromagnetic Nonlinear Transient Finite Element Modeling of Solid-State Transformer for DC Grid Studies. IEEE Transactions on Industrial Electronics ,68,938-948.
- Makarov,S,N., Emanuel,A,E., 2000.Corrected harmonic loss factor for transformer supplying nonsinusoida current.,9. international conference on Harmonics and Quality of power, 87-89.
- Moonhee,L., Abdullah,A., Jofriet.,C., 2010. Temperature distribution in foil winding for ventilated dry-type power transformers, Electric Power System Research, 80, 1065-1073.
- Najafi,A.,Iskender,I.,2014 . Evaluating and derating of three-phase distribution transformer under unbalanced voltage and unbalance load using finite element method. IEEE 8th international power engineering and optimization conference. 160–165.
- Najafi,A., Iskender,I.,2016. Electromagnetic Force Investigation on Distribution Transformer Under Unbalanced Faults Based on Time Stepping Finite Element Methods. International Journal of Electrical Power and Energy Systems, 76, 147–155.
- Paramane,S., Joshi,K., Van,W., Sharma,A.,2014 .CFD study on thermal performance of radiators in a power transformer: effect of blowing direction and offset of fans, IEEE Transaction on Power Delivery, 29 (6) , 2596–2604.
- Tsili,M ., Amoiralis,E., Kladas,A., Souflaris,A.,2012. Power transformer thermal analysis by using an advanced coupled 3D heat transfer and fluid flow FEM model. International Journal of Thermal Sciences, 53, 188-201.
- Wang,A., Zhao,C., Men,H., He,A., Chang,C., Wang,X., Li,R.,2015 .Development of high Bs Fe-based amorphous alloys with wide ribbon formation needed amorphous-forming ability. Journal of Alloys and Compounds, 630, 209-213.
- Zhang,j ., Li,X., 2006.Oil cooling for disk-type transformer windings-part 1: theory and model development. IEEE Transactions on Power Delivery, 21(3), 1318–1325.
- Zhang ,p., Li,l., 2020 .Vibration and noise characteristics of high-frequency amorphous transformer under sinusoidal and non-sinusoidal voltage excitation. International Journal of Electrical Power & Energy Systems , 123,1-9.
Abstract
To investigate the thermal analysis of the amorphous core transformer in detail, a multidisciplinary approach including heat transfer, fluid flow and electromagnet analysis has been used in this study. Thermal and fluid flow analysis have been combined with an electromagnetic model to study specific power losses in the coil and core. The proposed methodology is able to predict thermal distribution in detail in specific transformers such as amorphous core transformers, without requiring prior knowledge of nodal temperature or temperature gradient values. The results of the numerical study were confirmed by experimental results performed on a Dyn11, 34.5/0.4-kV, 630-kVA, transformer with amorphous core through thermal tests carried out according to the International Standards for oil immersed transformers. Comparison of theoretical and experimental results obtained in the study are in a good agreement and it will provide a useful tool for young engineers in thermal analyzing the power transformers.
References
- Amoiralis,E., Tsili,M., Kladas, A.,2009 .Transformer design and optimization: a literature survey. IEEE transactions on Power Delivery ,24 (4), 1999-2024.
- Aina,H ., Anding,W ., Shiqiang.,Y.,2016 .Dynamic magnetic characteristics of Fe78Si13B9 amorphous alloy subjected to operating temperature. Journal of Magnetism and Magnetic Materials, 408, 159–163.
- Azuma,D., iIto,N. , Ohta,M., 2020.Recent progress in Fe-based amorphous and nano-crystalline soft magnetic materials. Journal of Magnetism and Magnetic Materials, 501,230-242.
- Dianchun,Z., Jiaxiang,Y., Zhenghua,W.,2000 .Thermal field and hottest spot of the ventilated dry-type transformer. Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials, 1, 141–143.
- El Wakil,N., Chereches.,N.,Padet,j.,2006. Numerical study of heat transfer and fluid flow in a power transformer. International journal of thermal science, 45, 615–626.
- IEEE Guide for Loading Mineral-Oil-Immersed Transformers, IEEE Standard C57.91-1995
- Li,j., Estévez, D ., Jiang,K .,2014 .Electronic-structure origin of the glass-forming ability and magnetic properties in Fe–RE–B–Nb bulk metallic glasses. Journal of Alloys and Compounds, 617, 332-336.
- Lin,N., Liu,P., Dinavahi,V., 2020 . Component-Level Thermo-Electromagnetic Nonlinear Transient Finite Element Modeling of Solid-State Transformer for DC Grid Studies. IEEE Transactions on Industrial Electronics ,68,938-948.
- Makarov,S,N., Emanuel,A,E., 2000.Corrected harmonic loss factor for transformer supplying nonsinusoida current.,9. international conference on Harmonics and Quality of power, 87-89.
- Moonhee,L., Abdullah,A., Jofriet.,C., 2010. Temperature distribution in foil winding for ventilated dry-type power transformers, Electric Power System Research, 80, 1065-1073.
- Najafi,A.,Iskender,I.,2014 . Evaluating and derating of three-phase distribution transformer under unbalanced voltage and unbalance load using finite element method. IEEE 8th international power engineering and optimization conference. 160–165.
- Najafi,A., Iskender,I.,2016. Electromagnetic Force Investigation on Distribution Transformer Under Unbalanced Faults Based on Time Stepping Finite Element Methods. International Journal of Electrical Power and Energy Systems, 76, 147–155.
- Paramane,S., Joshi,K., Van,W., Sharma,A.,2014 .CFD study on thermal performance of radiators in a power transformer: effect of blowing direction and offset of fans, IEEE Transaction on Power Delivery, 29 (6) , 2596–2604.
- Tsili,M ., Amoiralis,E., Kladas,A., Souflaris,A.,2012. Power transformer thermal analysis by using an advanced coupled 3D heat transfer and fluid flow FEM model. International Journal of Thermal Sciences, 53, 188-201.
- Wang,A., Zhao,C., Men,H., He,A., Chang,C., Wang,X., Li,R.,2015 .Development of high Bs Fe-based amorphous alloys with wide ribbon formation needed amorphous-forming ability. Journal of Alloys and Compounds, 630, 209-213.
- Zhang,j ., Li,X., 2006.Oil cooling for disk-type transformer windings-part 1: theory and model development. IEEE Transactions on Power Delivery, 21(3), 1318–1325.
- Zhang ,p., Li,l., 2020 .Vibration and noise characteristics of high-frequency amorphous transformer under sinusoidal and non-sinusoidal voltage excitation. International Journal of Electrical Power & Energy Systems , 123,1-9.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Engineering |
| Journal Section | Articles |
| Authors | |
| Publication Date | October 31, 2021 |
| Submission Date | December 6, 2020 |
| Published in Issue | Year 2021 Volume: 21 Issue: 5 |
