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A Deep Neural Network-Assisted Approach to Enhance Short-Term Optimal Operational Scheduling of a Microgrid

Fatma Yaprakdal, M. Berkay Yılmaz, Mustafa Baysal and Amjad Anvari-Moghaddam
Additional contact information
Fatma Yaprakdal: Faculty of Electrical and Electronics Engineering, Yildiz Technical University, Davutpasa Campus, 34220 Esenler, Istanbul, Turkey
M. Berkay Yılmaz: Computer Engineering Department, Akdeniz University, Antalya Campus, Dumlupinar Boulevard, 07058 Antalya, Turkey
Mustafa Baysal: Faculty of Electrical and Electronics Engineering, Yildiz Technical University, Davutpasa Campus, 34220 Esenler, Istanbul, Turkey
Amjad Anvari-Moghaddam: Department of Energy Technology, Aalborg University, 9220 Aalborg East, Denmark

Sustainability, 2020, vol. 12, issue 4, 1-27

Abstract: The inherent variability of large-scale renewable energy generation leads to significant difficulties in microgrid energy management. Likewise, the effects of human behaviors in response to the changes in electricity tariffs as well as seasons result in changes in electricity consumption. Thus, proper scheduling and planning of power system operations require accurate load demand and renewable energy generation estimation studies, especially for short-term periods (hour-ahead, day-ahead). The time-sequence variation in aggregated electrical load and bulk photovoltaic power output are considered in this study to promote the supply-demand balance in the short-term optimal operational scheduling framework of a reconfigurable microgrid by integrating the forecasting results. A bi-directional long short-term memory units based deep recurrent neural network model, DRNN Bi-LSTM, is designed to provide accurate aggregated electrical load demand and the bulk photovoltaic power generation forecasting results. The real-world data set is utilized to test the proposed forecasting model, and based on the results, the DRNN Bi-LSTM model performs better in comparison with other methods in the surveyed literature. Meanwhile, the optimal operational scheduling framework is studied by simultaneously making a day-ahead optimal reconfiguration plan and optimal dispatching of controllable distributed generation units which are considered as optimal operation solutions. A combined approach of basic and selective particle swarm optimization methods, PSO&SPSO, is utilized for that combinatorial, non-linear, non-deterministic polynomial-time-hard (NP-hard), complex optimization study by aiming minimization of the aggregated real power losses of the microgrid subject to diverse equality and inequality constraints. A reconfigurable microgrid test system that includes photovoltaic power and diesel distributed generators is used for the optimal operational scheduling framework. As a whole, this study contributes to the optimal operational scheduling of reconfigurable microgrid with electrical energy demand and renewable energy forecasting by way of the developed DRNN Bi-LSTM model. The results indicate that optimal operational scheduling of reconfigurable microgrid with deep learning assisted approach could not only reduce real power losses but also improve system in an economic way.

Keywords: day-ahead operational scheduling; reconfigurable microgrid; DRNN Bi-LSTM; aggregated load forecasting; bulk photovoltaic power generation forecasting (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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