Assessment of a parabolic dish-Stirling-diesel-battery system for rural electrification: A Bolivian highland case study

Jimenez Zabalaga, Pablo;Sanchez, Claudia;Balderrama, Sergio;Cardozo, Evelyn;Boukas, Ioannis
(2022) The 3rd LA Conference on Sustainable Development of Energy, Water and Environment Systems — Location: São Paulo, Brazil (24.July.2022)

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Authors
  • Jimenez Zabalaga, Pabloorcid-logoUCLouvain
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  • Sanchez, Claudia
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  • Balderrama, Sergio
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  • Cardozo, Evelyn
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  • Boukas, Ioannis
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Abstract
In the last decades, the growing energy demand, the variability of fossil fuel prices, the depletion of oil resources and the increasing greenhouse gas emissions have been encouraging the development of affordable, sustainable and reliable technologies for power generation. Thus, an effective solution to properly integrate flexible consumption, storage devices, and renewable and conventional energy sources in a decentralized manner is through the development of microgrids. In this paper, a nontraditional parabolic dish-Stirling-diesel-battery hybrid microgrid is proposed and evaluated. Referred to the components, the parabolic solar dish-Stirling engine system (PSDS) serves as the primary source of electricity generation while the diesel generator in conjunction with the battery bank provides electrical energy backup when the primary source of power is unavailable. In this way, the novelty of the study relies on a comparison between the mentioned system and conventional isolated microgrids, such as diesel-battery and PV-diesel-battery systems, using an opensource simulator of the microgrid operation. The developed model is used to study a hypothetical case of electrification for a 100-household rural village in Bolivia called Pojo Pata. The results indicate that the proposed system is very competitive compared to the other configurations. Whereas the PV-diesel-battery system is still shown to have a slightly lower levelized cost of electricity (LCOE) and operational costs than the studied system, the PSDS microgrid represents about 16% of savings in terms of LCOE and 21% related to operational costs in comparison to the conventional diesel-battery system. Moreover, two control strategies for the PSDS microgrid, optimization-based and rule-based algorithms, are evaluated in terms of the operational costs. The optimization-based controller was able to outperform the common rulebased one, as it reached near 4% of savings.
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Jimenez Zabalaga, P., Sanchez, C., Balderrama, S., Cardozo, E., & Boukas, I. (2022). Assessment of a parabolic dish-Stirling-diesel-battery system for rural electrification: A Bolivian highland case study. Proceedings of the 3rd LA Conference on Sustainable Development of Energy, Water and Environment Systems, 3(3), 123. https://hdl.handle.net/2078.5/241042 (Original work published 2022)