SARIMA-Orthogonal Polynomial Curve Fitting Model for Medium-Term Load Forecasting

Table 6

Electricity consumption forecasting results in 2014.

Month	Original data	Model
		Seasonal-ARIMA		Combined seasonal-ARIMA
		Prediction	RE (%)	Prediction	RE (%)
Jan. 2014	4407.06	4524.87	2.650	4307.64	−2.256
Feb. 2014	3835.00	3713.78	−3.161	3821.68	−0.347
Mar. 2014	4544.15	4439.32	−2.307	4282.66	−5.754
Apr. 2014	4356.27	4431.63	1.730	4318.90	−0.858
May 2014	4492.04	4503.10	0.246	4459.16	−0.732
June 2014	4638.50	4699.41	1.313	4527.83	−2.386
Jul. 2014	5096.96	5282.25	3.635	5174.04	1.512
Aug. 2014	5025.34	5348.25	6.426	5175.76	2.993
Sep. 2014	4569.73	4730.72	3.523	4604.44	0.760
Oct. 2014	4508.40	4591.07	1.834	4470.74	−0.834
Nov. 2014	4632.24	4736.44	2.249	4560.08	−1.558