دانلود مقاله ISI انگلیسی شماره 54741
ترجمه فارسی عنوان مقاله

حفاظت در مقابل اضافه ولتاژهای صاعقه در شبکه های توزیع انرژی زمینی رزونانس

عنوان انگلیسی
Protection against lightning overvoltages in resonant grounded power distribution networks
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
54741 2014 8 صفحه PDF
منبع

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

Journal : Electric Power Systems Research, Volume 113, August 2014, Pages 121–128

ترجمه کلمات کلیدی
حفاظت در برابر صاعقه؛ شبکه های توزیع انرژی؛
کلمات کلیدی انگلیسی
Lightning protection; Power distribution networks; Induced overvoltages; Insulation flashovers; Lightning performance; Electromagnetic transients
پیش نمایش مقاله
پیش نمایش مقاله  حفاظت در مقابل اضافه ولتاژهای صاعقه در شبکه های توزیع انرژی زمینی رزونانس

چکیده انگلیسی

AES Sul, a Brazilian electric distribution utility, has recently started a project focused on the installation of neutral resonant grounding devices at the medium voltage side of some substation transformers previously operated with solid grounded neutral. As a consequence of the expected increase of the voltage in the sound conductors during phase to ground faults, all the surge arresters must be replaced with ones with increased rating. In order to minimize the number of required surge arresters, a procedure has been developed for the estimation of the annual number of lightning events causing concomitant faults in more than one phase conductor. The paper describes the procedure, which takes into account all the main factors that have a significant influence on line insulation flashovers caused by lightning, and presents results obtained for the case of an overhead line with and without protection means.