مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

مطالعه تجربی تأثیر استفاده از ماده تغییر فاز دهنده جهت بهبود عایق‌بندی الکتریکی ترانسفورماتورهای توزیع برق

نوع مقاله : پژوهشی اصیل

نویسندگان
محمد مزیدی شرف آبادی 1
نهی مجید کرم 2
رضا کرد 3
1 پژوهشکده توسعه و بهینه سازی فناوری های انرژی، پژوهشگاه صنعت نفت
2 دانشگاه آزاد اسلامی، واحد علوم و تحقیقات
3 دانشگاه تهران
10.22034/MME.24.1.21
چکیده
در این مقاله تأثیر استفاده از مواد تغییر فاز دهنده به‌عنوان عامل بهبود انتقال حرارت در ترانسفورماتورهای توزیع برق به‌طور تجربی بررسی شده است. برای بهبود خنک‌کاری ترانسفورماتور، روش جدیدی پیشنهاد شده که شامل افزودن پارافین در داخل ظروف آلومینیومی دربسته به روغن ترانسفورماتور است. بستر آزمون استفاده‌شده شامل یک ترانسفورماتور برق به همراه روغن ترانسفورماتور، دو گرم‌کن برقی، تنظیم‌کننده توان، دوربین حرارتی، دستگاه اندازه‌گیری استقامت دی‌الکتریک روغن و حسگرهای دما که در مکان‌های مختلف قرارگرفته‌اند، می‌باشد. نتایج تجربی نشان داد که افزودن 8 کیلوگرم پارافین به روغن ترانسفورماتور، باعث کاهش دمای ترانسفورماتور به‌ویژه در شرایط آب و هوایی گرم تابستان می‌شود و دمای میانگین روغن ترانسفورماتور را از 7/46 به 5/42 سانتی‌گراد کاهش می‌یابد. در این آزمایش مشخص شد که وقتی دمای روغن به‌طور ناگهانی و سریع طی یک ساعت افزایش یابد، افزودن پارافین به‌خوبی نمی‌تواند باعث دفع حرارت و کاهش دما شود. در انتها تأثیر افزایش مداوم و بالای دما بر عایق روغن بررسی شد. نتایج نشان داد که با به‌کارگیری پارافین، مقدار ولتاژی که روغن می‌تواند به‌عنوان عایق الکتریکی تحمل کند از 8/56 به 61 کیلوولت افزایش می‌یابد.
کلیدواژه‌ها
بررسی تجربی
بستر آزمون
ترانسفورماتور توزیع
مواد تغییر فاز دهنده
پارافین
خنک‌کاری
عایق روغن

موضوعات

عنوان مقاله English

Experimental study of the effect of using phase change material to improve electrical insulation of power distribution transformers

نویسندگان English

Mohammad Mazidi Sharfabadi 1
Nuha Majeed Karam 2
Reza Kurd 3
1 Research Institute of Petroleum Industry
2 Islamic Azad University, Science and Research Branch
3 University of Tehran
چکیده English

In this article, the effect of using phase change materials to improve heat transfer in power distribution transformers has been investigated experimentally. To enhance the cooling of the transformer, a new method has been proposed, which involves adding paraffin inside aluminium containers that are sealed to the transformer oil. The test setup includes an electric transformer filled with transformer oil, two electrical heaters, a power regulator, a thermal camera, oil insulation measuring device, and temperature sensors placed at various locations. The experimental results demonstrated that the addition of phase change materials to the electronic transformer oil led to a decrease in the temperature of the transformer, particularly in summer weather conditions. Additionally, the mean temperature of the transformer oil was reduced from 46.7 to 42.5 degrees Celsius by adding 8 kg of paraffin. However, it was observed that when the temperature increases suddenly and rapidly within an hour, these materials are ineffective in dissipating the heat and reducing the temperature of the transformers. Additionally, the research examines the impact of continuous and high-temperature increases on the oil electrical insulation. The results revealed that using phase change materials increased the voltage that the oil could withstand as an electrical insulator from 56.8 kV to 61 kV.

کلیدواژه‌ها English

Experimental Study
Test Bench
Disturbution Transformer
Phase change material
Paraffin
Cooling
Oil Insulation
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مهندسی مکانیک مدرس
دوره 24، شماره 1
دی 1402
صفحه 21-30