دانلود مقاله ISI انگلیسی شماره 57575
ترجمه فارسی عنوان مقاله

در مورد تفاوت بین امپدانس مغناطیسی توالی صفر از یک ترانسفورماتور نوع هسته 3 فازی

عنوان انگلیسی
About the difference between zero-sequence magnetizing impedances of a 3-phase core-type transformer
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
57575 2014 5 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Electric Power Systems Research, Volume 116, November 2014, Pages 439–443

ترجمه کلمات کلیدی
امپدانس توالی صفر ترانسفورماتور ؛ ترانسفورماتور سه فاز سه محور ؛ امپدانس مغناطیسی توالی صفر
کلمات کلیدی انگلیسی
Transformer zero-sequence impedances; 3-phase 3-limb transformers; Zero-sequence magnetizing impedances
پیش نمایش مقاله
پیش نمایش مقاله  در مورد تفاوت بین امپدانس مغناطیسی توالی صفر از یک ترانسفورماتور نوع هسته 3 فازی

چکیده انگلیسی

This paper analyzes the difference between zero-sequence magnetizing impedances (Z0M) of a 3-phase core-type transformer. Z0M in per-unit is smaller for an external winding than for an internal winding. The difference between both Z0M values is similar to the positive-sequence short-circuit impedance between both windings for units without magnetic shunts on the tank wall as well as for units without tank. This fact can be observed in measured values, and in the results of 3D models. However, the results of simple 2D models do not show this behavior; therefore, this paper demonstrates that this fact only can be explained from 3D models. The results are shown for different cases: transformers with and without magnetic shunts on the tank wall, and transformers without tank. In transformers with magnetic shunts on the tank wall, or in magnetostatic simulations of transformers with tank, the difference between both Z0M values is not very similar to the positive-sequence short-circuit impedance between both windings.