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Optimal Configuration of Distributed Energy Systems with Hydrogen as Energy Carrier under Sustainability Criteria

Abstract : This work focuses on the conceptual design of distributed energy systems considering the sustainability dimensions. The design problem is addressed by means of an optimization-based strategy that enables to integrate different energy vectors and multiple technological units as possible solutions. The modeling approach considers the time-varying operation of the energy conversion units along with the seasonal behavior of the storage system. Meanwhile, the multi-objective optimization problem simultaneously addresses economic, environmental, and social aspects for the design of the energy system. Total annualized cost, levelized cost of energy, CO2 emissions, water consumption, grid dependence, and inherent safety are the selected indicators to evaluate the sustainability dimensions. Two case studies are analyzed to illustrate the proposed framework. The first case study is in France and corresponds to a grid-connected energy system conceived to satisfy the electricity and hydrogen needs of a neighborhood of 1500 inhabitants. The second case study is an isolated energy system located in a remote region in the Colombian Amazon. In such a case, the objective is to design a self-sufficient energy system with the capacity for supplying electricity and methane to a community of 4200 inhabitants. Initially, the impact of the sustainability indicators on the optimal design of the energy systems is investigated through single-objective optimizations. Besides, the time-varying operating conditions and the seasonal behavior of the energy storage units are also analyzed. Subsequently, different multi-objective optimization problems are addressed considering different combinations of the sustainability indicators. In such a way, the compromise among the objective functions is identified, and the obtained Pareto solutions are explored for elucidating the changes in the design and operating conditions throughout the non-dominated solutions. Broadly, these results constitute a valuable information about the relationships between the sustainability dimensions in terms of design and operation variables. Accordingly, the proposed approach represents a useful tool for decision-makers to make informed decisions from early stages in the energy system design.
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Submitted on : Friday, February 5, 2021 - 10:49:33 AM
Last modification on : Wednesday, November 3, 2021 - 7:09:43 AM

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  • HAL Id : tel-03132500, version 1


Juan Fonseca. Optimal Configuration of Distributed Energy Systems with Hydrogen as Energy Carrier under Sustainability Criteria. Electric power. Université de Lorraine; Universidad nacional de Colombia, 2020. English. ⟨NNT : 2020LORR0153⟩. ⟨tel-03132500⟩



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