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Optimal placement and sizing of heat pumps and heat only boilers in a coupled electricity and heating networks
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. CNRS, UMR 6144, GEPEA, IMT Atlantique, F-44307 Nantes, France..
CNRS, UMR 6144, GEPEA, IMT Atlantique, F-44307 Nantes, France..
CNRS, UMR 6144, GEPEA, IMT Atlantique, F-44307 Nantes, France..
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. KTH Royal Inst Technol, Dept Energy Technol, S-10044 Stockholm, Sweden..
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2019 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 182, p. 122-134Article in journal (Refereed) Published
Abstract [en]

Multi-energy systems are reported to have a better environmental and economic performance relative to the conventional, single-carrier, energy systems. Electrification of district heating networks using heat pumps and combined heat and power technologies is one such example. Due to lack of suitable modelling tools, however, the sizing and optimal placement of heat pumps is always done only from the heating network point of view which sometimes compromises the electricity network. This paper proposes an integrated optimization algorithm to overcome such limitation. A load flow model based on an extended energy hub approach is combined with a nested particle swarm optimization algorithm. A waste to energy combined heat and power plant, heat pumps (HPs), heat only boiler (HOB), solar photovoltaic, wind turbines and imports from the neighborhood grids are considered in the case studies. The results show that optimal placement and sizing of HPs and a HOB using the proposed methodology avoids an unacceptable voltage profiles and overloading of the electricity distribution network, which could arise while optimizing only from the heating network point of view. It also shows that up to 41.2% of the electric loss and 5% of the overall operating cost could be saved.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2019. Vol. 182, p. 122-134
Keywords [en]
An extended energy hub, Coupled electricity and heating networks, Heat pump, Multi-carrier energy networks, Multi-energy systems, Particle swarm optimization (PSO)
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-257541DOI: 10.1016/j.energy.2019.06.018ISI: 000479021700011Scopus ID: 2-s2.0-85067664987OAI: oai:DiVA.org:kth-257541DiVA, id: diva2:1352379
Conference
31st International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems (ECOS), JUN 17-21, 2018, Guimaraes, PORTUGAL
Note

QC 20190918

Available from: 2019-09-18 Created: 2019-09-18 Last updated: 2019-09-18Bibliographically approved

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Ayele, Getnet TadesseLaumert, Björn

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