Stochastic control of a micro-grid using battery energy storage in solar-powered buildings

Ying Chen, Krystel K. Castillo-Villar () and Bing Dong
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Ying Chen: University of Texas at San Antonio
Krystel K. Castillo-Villar: University of Texas at San Antonio
Bing Dong: University of Texas at San Antonio

Annals of Operations Research, 2021, vol. 303, issue 1, No 10, 197-216

Abstract: Abstract This paper presents an efficient data-driven building electricity management system that integrates a battery energy storage (BES) and photovoltaic panels to support decision-making capabilities. In this micro-grid (MG) system, solar panels and power grid supply the electricity to the building and the BES acts as a buffer to alleviate the uncertain effects of solar energy generation and the demands of the building. In this study, we formulate the problem as a Markov decision process and model the uncertainties in the MG system, using martingale model of forecast evolution method. To control the system, lookahead policies with deterministic/stochastic forecasts are implemented. In addition, wait-and-see, greedy and updated greedy policies are used to benchmark the performance of lookahead policies. Furthermore, by varying the charging/discharging rate, we obtain the different battery size $$ \left( {E_{s} } \right) $$ E s and transmission line power capacity $$ (P_{max} ) $$ ( P max ) accordingly, and then we investigate how the different $$ E_{s} $$ E s and $$ P_{max} $$ P max affect the performance of control policies. The numerical experiments demonstrate that the lookahead policy with stochastic forecasts performs better than the lookahead policy with deterministic forecasts when the $$ E_{s} $$ E s and $$ P_{max} $$ P max are large enough, and the lookahead policies outperform the greedy and updated policies in all case studies.

Keywords: Micro-grid; Control; Lookahead policies; Building (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10479-019-03444-3

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