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Open AccessArticle

Short-Term Load Forecasting Algorithm Using a Similar Day Selection Method Based on Reinforcement Learning

Department of Electrical Engineering, Soongsil University, Seoul 06978, Korea
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Energies 2020, 13(10), 2640; https://doi.org/10.3390/en13102640
Received: 21 April 2020 / Revised: 18 May 2020 / Accepted: 19 May 2020 / Published: 21 May 2020
(This article belongs to the Section Electrical Power and Energy System)
Short-term load forecasting (STLF) is very important for planning and operating power systems and markets. Various algorithms have been developed for STLF. However, numerous utilities still apply additional correction processes, which depend on experienced professionals. In this study, an STLF algorithm that uses a similar day selection method based on reinforcement learning is proposed to substitute the dependence on an expert’s experience. The proposed algorithm consists of the selection of similar days, which is based on the reinforcement algorithm, and the STLF, which is based on an artificial neural network. The proposed similar day selection model based on the reinforcement learning algorithm is developed based on the Deep Q-Network technique, which is a value-based reinforcement learning algorithm. The proposed similar day selection model and load forecasting model are tested using the measured load and meteorological data for Korea. The proposed algorithm shows an improvement accuracy of load forecasting over previous algorithms. The proposed STLF algorithm is expected to improve the predictive accuracy of STLF because it can be applied in a complementary manner along with other load forecasting algorithms. View Full-Text
Keywords: short-term load forecasting; deep Q-network (DQN); backpropagation neural network (BPNN); long short-term memory (LSTM); reinforcement learning algorithm short-term load forecasting; deep Q-network (DQN); backpropagation neural network (BPNN); long short-term memory (LSTM); reinforcement learning algorithm
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Park, R.-J.; Song, K.-B.; Kwon, B.-S. Short-Term Load Forecasting Algorithm Using a Similar Day Selection Method Based on Reinforcement Learning. Energies 2020, 13, 2640.

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