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Article: Extended convex hull-based distributed optimal energy flow of integrated electricity-gas systems

TitleExtended convex hull-based distributed optimal energy flow of integrated electricity-gas systems
Authors
KeywordsAlternating direction method of multipliers
Convex relaxation
Distributed optimization
Integrated electricity and gas systems
Optimal energy flow
Quadratic program
Issue Date2021
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/apenergy
Citation
Applied Energy, 2021, v. 287, article no. 116551 How to Cite?
AbstractIntegrated electricity and gas systems are constructed to facilitate the gas-fired generation, and the distributed operation of these integrated systems have received much attention due to the increased emphasis on data security and privacy between different agencies. This paper proposes an extended convex hull based method to address optimal energy flow problems for the integrated electricity and gas systems in a distributed manner. First, a multi-block electricity-gas system model is constructed by dividing the whole system into N blocks considering both physical and regional differences. This multi-block model is then convexified by replacing the nonconvex gas transmission equation with the extended convex hull-based constraints. The Jacobi-Proximal alternating direction method of multipliers algorithm is adopted to solve the convexified model and minimize its operation cost. Finally, the feasibility of the optimal solution for the convexified model is checked, and a sufficient condition is developed. If the sufficient condition is satisfied, the optimal solution for the original nonconvex problem can be recovered from that for the convexified problem. Simulation results demonstrate that the proposed method is tractable and effective in obtaining feasible optimal solutions for multi-block optimal energy flow problems.
Persistent Identifierhttp://hdl.handle.net/10722/305790
ISSN
2023 Impact Factor: 10.1
2023 SCImago Journal Rankings: 2.820
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, R-
dc.contributor.authorSun, W-
dc.contributor.authorYin, W-
dc.contributor.authorZhou, D-
dc.contributor.authorHou, Y-
dc.date.accessioned2021-10-20T10:14:21Z-
dc.date.available2021-10-20T10:14:21Z-
dc.date.issued2021-
dc.identifier.citationApplied Energy, 2021, v. 287, article no. 116551-
dc.identifier.issn0306-2619-
dc.identifier.urihttp://hdl.handle.net/10722/305790-
dc.description.abstractIntegrated electricity and gas systems are constructed to facilitate the gas-fired generation, and the distributed operation of these integrated systems have received much attention due to the increased emphasis on data security and privacy between different agencies. This paper proposes an extended convex hull based method to address optimal energy flow problems for the integrated electricity and gas systems in a distributed manner. First, a multi-block electricity-gas system model is constructed by dividing the whole system into N blocks considering both physical and regional differences. This multi-block model is then convexified by replacing the nonconvex gas transmission equation with the extended convex hull-based constraints. The Jacobi-Proximal alternating direction method of multipliers algorithm is adopted to solve the convexified model and minimize its operation cost. Finally, the feasibility of the optimal solution for the convexified model is checked, and a sufficient condition is developed. If the sufficient condition is satisfied, the optimal solution for the original nonconvex problem can be recovered from that for the convexified problem. Simulation results demonstrate that the proposed method is tractable and effective in obtaining feasible optimal solutions for multi-block optimal energy flow problems.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/apenergy-
dc.relation.ispartofApplied Energy-
dc.subjectAlternating direction method of multipliers-
dc.subjectConvex relaxation-
dc.subjectDistributed optimization-
dc.subjectIntegrated electricity and gas systems-
dc.subjectOptimal energy flow-
dc.subjectQuadratic program-
dc.titleExtended convex hull-based distributed optimal energy flow of integrated electricity-gas systems-
dc.typeArticle-
dc.identifier.emailHou, Y: yhhou@hku.hk-
dc.identifier.authorityHou, Y=rp00069-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.apenergy.2021.116551-
dc.identifier.scopuseid_2-s2.0-85100447020-
dc.identifier.hkuros327375-
dc.identifier.volume287-
dc.identifier.spagearticle no. 116551-
dc.identifier.epagearticle no. 116551-
dc.identifier.isiWOS:000621228700006-
dc.publisher.placeUnited Kingdom-

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