Electricity, Heat, and Gas Load Forecasting Based on Deep Multitask Learning in Industrial-Park Integrated Energy System

• Published in: Entropy (Basel, Switzerland) Vol. 22; no. 12; p. 1355
• Main Authors: Zhang, Linjuan, Shi, Jiaqi, Wang, Lili, Xu, Changqing
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 30.11.2020; MDPI
• Subjects: Algorithms; Alternative energy sources; Artificial intelligence; Belief networks; Consumption; Deep learning; Economic forecasting; Electrical loads; Electricity; Electricity consumption; Electricity distribution; energy forecasting for electricity; Forecasting; heat and gas; industrial-park; integrated energy system; Integrated energy systems; Learning; Machine learning; Mathematical models; multitask; Natural gas; Neural networks; Voice recognition; deep learning; multitask; heat and gas; energy forecasting for electricity; integrated energy system; industrial-park
• ISSN: 1099-4300; 1099-4300
• DOI: 10.3390/e22121355

Different energy systems are closely connected with each other in industrial-park integrated energy system (IES). The energy demand forecasting has important impact on IES dispatching and planning. This paper proposes an approach of short-term energy forecasting for electricity, heat, and gas by employing deep multitask learning whose structure is constructed by deep belief network (DBN) and multitask regression layer. The DBN can extract abstract and effective characteristics in an unsupervised fashion, and the multitask regression layer above the DBN is used for supervised prediction. Then, subject to condition of practical demand and model integrity, the whole energy forecasting model is introduced, including preprocessing, normalization, input properties, training stage, and evaluating indicator. Finally, the validity of the algorithm and the accuracy of the energy forecasts for an industrial-park IES system are verified through the simulations using actual operating data from load system. The positive results turn out that the deep multitask learning has great prospects for load forecast.