دانلود مقاله ISI انگلیسی شماره 141371
ترجمه فارسی عنوان مقاله

تنوع و همبستگی منابع انرژی تجدیدپذیر در سیستم برق پرتغال

عنوان انگلیسی
Variability and correlation of renewable energy sources in the Portuguese electrical system
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
141371 2018 13 صفحه PDF
منبع

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

Journal : Energy for Sustainable Development, Volume 42, February 2018, Pages 64-76

ترجمه کلمات کلیدی
منابع انرژی تجدیدپذیر، تنوع تجدیدپذیر همبستگیهای تجدید پذیر، بازار تنظیم مقررات،
کلمات کلیدی انگلیسی
Renewable energy sources; Renewables variability; Renewables correlation; Reserve regulation market;
پیش نمایش مقاله
پیش نمایش مقاله  تنوع و همبستگی منابع انرژی تجدیدپذیر در سیستم برق پرتغال

چکیده انگلیسی

The lack of predictability in the output of solar, wind, and small hydroelectric power plants aggravates the problem of consistently matching supply with demand on electric grids. In this paper, a database of renewable power injection, at 15-minute intervals during 2010–2014, into the Portuguese electric transmission system is analysed to characterize the variability and other patterns of renewable energy injection into the system. The system, operated by REN (Redes Energéticas Nacionais), received 20–28% of its electricity from the three renewable energy sources (RES) mentioned, with wind contributing about 90% of that amount. A strong complementarity (smoothing effect) between wind and PV was found, with correlation factors of − 0.92 and − 0.83 for typical summer and winter days, respectively. The correlation factors for different time scales decrease from annual totals (− 0.88) to hourly totals (− 0.24), as expected. The results suggest that lower wind power years correspond to sunnier ones. Moreover, the reserve regulation costs appear to decrease when the installed capacity of the three considered RES increase.