کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4945443 1438705 2018 12 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Analysis of 500 kV OHTL polluted insulator string behavior during lightning strokes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر هوش مصنوعی
پیش نمایش صفحه اول مقاله
Analysis of 500 kV OHTL polluted insulator string behavior during lightning strokes
چکیده انگلیسی
In this paper, the lightning overvoltage in the El-Kuorimate - Cairo 500-kV transmission line single circuit is discussed. The leakage current and its harmonic spectrum on clean and polluted 500-kV string insulators are determined under normal condition and lightning strokes. Furthermore, the relation between back flashover and insulator surface condition are discussed under different magnitude of lightning strokes. The results show that the leakage current, thermal losses magnitudes in case polluted insulator are higher than in case clean insulator by about 97.2%. For polluted insulator, less lightning strokes peak will increase leakage current to above 60 mA, and lead to serious insulator flashover faster than clean insulator. This study based on an equivalent electrical model by using Alternative Transients Program (ATP-EMTP) software.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Electrical Power & Energy Systems - Volume 95, February 2018, Pages 405-416
نویسندگان
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