عنوان ترجمه فایل فارسی: رفتار بار فضایی در عایق کاغذ آغشته به روغن چند لایه، تحت ولتاژهای جریان مستقیم و دماهای مختلف.
عنوان نسخه انگلیسی: Space Charge Behavior in Multi-layer Oil-paper Insulation under Different DC Voltages and Temperatures
مرتبط با رشته های : برق و الکترونیک
تعداد صفحات مقاله فارسی: ۳۸ صفحه
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قسمتی از متن انگلیسی:
۱ INTRODUCTION OIL-PAPER insulation has
been used in power transformers, power cables and HVDC equipments for
quite a long time because of its low cost and desirable physical and
electrical properties. But it degrades under a combined stress of
thermal, electrical, mechanical, and chemical stresses during routine
operations. This will affect the lifetime of power equipment
significantly. On the other hand, space charge in dielectric materials
has a close relation to the electrical performance of a material. For
example, trapped or low-mobility electrically charged species within the
bulk can give rise to space charge, resulting in localized electrical
stress enhancement. This can cause further concentration of charge and
lead to premature failure of the material [1, 2]. Therefore, a better
understanding of charge dynamics, in accordance with the specific
variation of the charge distribution in multi-layer insulation system
becomes increasingly important and needs a careful investigation.
