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| Home > Publications database > Electrical Storage Design in Multi-Energy Systems: Impact of Component Model Choice |
| Contribution to a conference proceedings | FZJ-2025-01760 |
; ; ; ;
2024
IEEE
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Please use a persistent id in citations: doi:10.1109/ISGTEUROPE62998.2024.10863645
Abstract: The transition towards coupled energy sectorswithin multi-energy systems (MES) requires explicit modellingof more components and thus requires careful decisions on thelevel of modelling details. The focus commonly lies on one energysector, with strong simplifications for the remaining coupledenergy sectors. However, the impact of model choice on the MESplanning solution is largely unexplored. This work therefore setsout to investigate the impact of component model choice in anMES with electricity and heat for sizing a community batteryenergy storage system (BESS). Our analysis examines the impactof the choice of model of the power grid, the heating network, theheat pump, and the thermal building. Our results show a 49 %increase in BESS size when using the convex second-order coneformulation compared to the exact nonlinear AC OPF equationsfor the power grid. The linear formulation results in 58 %oversizing and suboptimal placement of the BESS. Furthermore,explicitly modelling the heating network does not significantlyimpact the design results but increases the computational efforts.Different heat pump models show minimum impact on the BESSdesign and location, thus our findings suggest that linear modelsfor the heat pump are suitable. However, omitting thermaldemand and storage capabilities overestimates the BESS sizeby 42 %. This further emphasizes the necessity of explicitlymodelling the coupled heating sector and its thermal inertia forrealistic electrical storage designs.
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