Optimization of biogas supply networks considering multiple objectives and auction trading prices of electricity

 

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dc.contributor.author Egieya, Jafaru M
dc.contributor.author Čuček, Lidija
dc.contributor.author Zirngast, Klavdija
dc.contributor.author Isafiade, Adeniyi J
dc.contributor.author Kravanja, Zdravko
dc.date.accessioned 2020-01-14T06:57:14Z
dc.date.available 2020-01-14T06:57:14Z
dc.date.issued 2020-01-08
dc.identifier.citation BMC Chemical Engineering. 2020 Jan 08;2(1):3
dc.identifier.uri https://doi.org/10.1186/s42480-019-0025-5
dc.identifier.uri http://hdl.handle.net/11427/30726
dc.description.abstract Abstract This contribution presents an hourly-based optimization of a biogas supply network to generate electricity, heat and organic fertilizer while considering multiple objectives and auction trading prices of electricity. The optimization model is formulated as a mixed-integer linear programming (MILP) utilizing a four-layer biogas supply chain. The model accounts for biogas plants based on two capacity levels of methane to produce on average 1 ± 0.1 MW and 5 ± 0.2 MW electricity. Three objectives are put forward: i) maximization of economic profit, ii) maximization of economic profit while considering cost/benefits from greenhouse gas (GHG) emissions (economic+GHG profit) and iii) maximization of sustainability profit. The results show that the economic profit accrued on hourly-based auction trading prices is negative (loss), hence, four additional scenarios are put forward: i) a scenario whereby carbon prices are steadily increased to the prevalent eco-costs/eco-benefits of global warming; ii) a scenario whereby all the electricity auction trading prices are multiplied by certain factors to find the profitability breakeven factor, iii) a scenario whereby shorter time periods are applied, and investment cost of biogas storage is reduced showing a relationship between cost, volume of biogas stored and the variations in electricity production and (iv) a scenario whereby the capacity of the biogas plant is varied from 1 MW and 5 MW as it affects economics of the process. The models are applied to an illustrative case study of agricultural biogas plants in Slovenia where a maximum of three biogas plants could be selected. The results hence present the effects of the simultaneous relationship of economic profit, economic+GHG profit and sustainability profit on the supply and its benefit to decision-making.
dc.subject Biogas production
dc.subject Auction trading prices of electricity
dc.subject Supply network optimization
dc.subject Multiple objectives
dc.subject Economic profitability
dc.title Optimization of biogas supply networks considering multiple objectives and auction trading prices of electricity
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dc.date.updated 2020-01-12T04:43:27Z
dc.language.rfc3066 en
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