Integrating photovoltaic solar energy and a battery energy storage system to operate a semi-autogenous grinding mill
Author
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Pamparana, G.
Author
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Kracht Gajardo, Willy
Author
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Haas, J.
Author
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Díaz Ferran, Gustavo
Author
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Palma Behnke, Rodrigo
Author
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Román Latorre, Roberto
Admission date
dc.date.accessioned
2018-06-27T14:38:48Z
Available date
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2018-06-27T14:38:48Z
Publication date
dc.date.issued
2017
Cita de ítem
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Journal of Cleaner Production, 165 (2017) 273-280
es_ES
Identifier
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http://dx.doi.org/10.1016/j.jclepro.2017.07.110
Identifier
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https://repositorio.uchile.cl/handle/2250/149277
Abstract
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The mining sector in Chile is facing a steady increase of energy consumption, which is mainly explained
by the lower grades, the increase in rock hardness, and deeper mines. Although much of the mining
activity in Chile is located in the Atacama Desert, where the solar radiation is high, the integration of
solar energy in mining remains elusive. This work explores, through simulation, the use of a solar
photovoltaic energy system (PV) and a battery energy storage system (BESS), combined with energy from
the grid, to operate a semi-autogenous grinding mill (SAG). For this, a novel mixed-integer linear programming
model was developed to optimize the operational costs of the joint SAG-PV-BESS operation,
after which the best sizes of PV and BESS components are found through scenario inspection. Further, the
implementation of a demand side management (DSM) option is considered by a proper sequencing of
the SAG feed to make a more efficient use of the solar energy. The results show an interdependent
behavior of the SAG-PV-BESS system and a strong influence of DSM. The use of both PV and BESS allows
reducing the contracted power for the SAG, without incurring into overconsumption penalties. If DSM is
implemented, the system allocates the higher consumption, associated to harder ore, during daytime to
use the available PV energy. Overall, the combined effect of PV and BESS operation of SAG mills allows
reducing the energy-associated operational costs. This effect is exacerbated when DSM is implemented
es_ES
Patrocinador
dc.description.sponsorship
The Chilean National Commission
for Scientific and Technological Research (CONICYT), through the
Solar Energy Research Center SERC-Chile (FONDAP 15110019) and
the Solar Mining project (CONICYT-BMBF 20140019), and the
German Academic Exchange Service (DAAD).