Combining Grey Model and Self-Adapting Intelligent Grey Model with Genetic Algorithm and Annual Share Changes in Natural Gas Demand Forecasting

被引:32
作者
Fan, Guo-Feng [1 ]
Wang, An [1 ]
Hong, Wei-Chiang [2 ]
机构
[1] Ping Ding Shan Univ, Sch Math & Stat, Ping Ding Shan 467000, Henan, Peoples R China
[2] Jiangsu Normal Univ, Sch Educ Intelligent Technol, 101 Shanghai Rd, Xuzhou 221116, Jiangsu, Peoples R China
关键词
grey model; self-adapting intelligent grey model; genetic algorithm; annual consumption share factor; natural gas demand forecasting; SUPPORT VECTOR REGRESSION; ELECTRICITY CONSUMPTION; NEURAL-NETWORK; CHINA;
D O I
10.3390/en11071625
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Along with the high growth rate of economy and fast increasing air pollution, clean energy, such as the natural gas, has played an important role in preventing the environment from discharge of greenhouse gases and harmful substances in China. It is very important to accurately forecast the demand of natural gas in China is for the government to formulate energy policies. This paper firstly proposes a combined forecasting model, name GM-S-SIGM-GA model, to forecast the demand of natural gas in China from 2011 to 2017, by constructing the grey model (GM(1,1)) and the self-adapting intelligent grey model (SIGM), respectively; then, it employs a genetic algorithm to determine the combined weight coefficients between these two models. Finally, using the tendency index (the annual changes of the share of natural gas consumption from the total energy consumption), which completely reveal the annual natural gas consumption share among the market, to successfully adjust the fluctuated changes for each data period. The natural gas demand data from 2002 to 2010 in China are used to model the proposed GM-S-SIGM-GA model, and the data from 2011 to 2017 are used to evaluate the forecasting accuracy. The experimental results demonstrate that the proposed GM-S-SIGM-GA model is superior to other single forecasting models in terms of the mean absolute percentage error (MAPE; 4.48%), the root mean square error (RMSE; 11.59), and the mean absolute error (MAE; 8.41), respectively, and the forecasting performances also receive the statistical significance under 97.5% and 95% confident levels, respectively.
引用
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页数:21
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