التنبؤ بإستهلاک الطاقة الشمسية الکهروضوئية في الصين باستخدام عشرة حدوديات | ||||
| المجلة العلمية لقطاع کليات التجارة بجامعة الأزهر | ||||
| Article 12, Volume 25, Issue 1, January 2021, Page 158-177 PDF (1.67 MB) | ||||
| Document Type: المقالة الأصلية | ||||
| DOI: 10.21608/jsfc.2021.248509 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
منى محمد غريب أحمد  1; أحمد حمد الله السمان2
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| 1باحثة في الإقتصاد بکلية الدراسات الآسيوية العليا – جامعة الزقازيق - مصر | ||||
| 2أستاذ دکتور بقسم الإقتصاد – کلية الإقتصاد والعلوم السياسية – جامعة القاهرة – مصر | ||||
| Abstract | ||||
| The problem of this paper is to forecast China’s consumption of PV-solar energy up to the year 2030. To solve this problem, ten polynomial models are built with degrees from first to tenth. Computing the model’s parameters is based on the actual consumption in the period from 1989 to 2018 and applying the method of least-squares with the aid of Excel, xuru, and php software. A comparison between the ten models is performed based on four measures; the root mean Square Residuals (RMSE), the complement of coefficient of determination (1-R2), the Bayesian Information Criterion (BIC) , and the absolute difference between the actual and forecasted consumption in 2019. The best model is the fifth-degree polynomial. This model is tested for sensitivity and significance and it passes the tests. The model is used for forecasting the consumptions for the period from 2019 to 2030. The forecasted consumption is 3788 TWh in the year 2030. | ||||
| Keywords | ||||
| Forecasting; PV-solar energy; Polynomials | ||||
| References | ||||
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