کنفرانس بین المللی ماشین و محرکه های الکتریکی

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صفحه اصلی / icemd2024

Optimum Selection of Distribution Transformers for Tropical Regions Considering Thermal Aging

نویسندگان :

Hossein Amini¹ Mohammad Hamed Samimi² Amir Abbas Shayegani Akmal³

1- School of Electrical and Computer Engineering, College of Engineering, University of Tehran 2- School of Electrical and Computer Engineering, College of Engineering, University of Tehran 3- School of Electrical and Computer Engineering, College of Engineering, University of Tehran

کلمات کلیدی :

Transformer aging،transformer remaining lifespan،thermal model،thermally upgraded paper،special transformer for tropical regions،wind and sunlight effect

چکیده :

In areas with high ambient temperatures and intense solar radiation, the hot-spot temperature of distribution transformer windings may exceed permissible limits, accelerating insulation degradation and reducing transformer lifespan. Transformers specifically designed for tropical regions, with enhanced heat transfer capabilities and reduced temperature rise, along with thermally upgraded paper-insulated transformers, offer promising solutions for lifespan extension in hot climates. This paper utilizes the IEC thermal model to estimate and compare the lifespan of standard Kraft paper-insulated transformers, tropical-design transformers, and thermally upgraded paper transformers under variable loading and realistic ambient temperature conditions. To enhance accuracy, the model incorporates the effects of solar radiation and wind on transformer temperature.

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