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2017 | OriginalPaper | Chapter

Optimization of Load Flows in Urban Hybrid Networks

Authors : Thomas Kaufmann, Dominik Bothe, Wolfgang Gawlik, Karl Ponweiser

Published in: Smart and Sustainable Planning for Cities and Regions

Publisher: Springer International Publishing

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Abstract

A sustainable supply of energy in urban regions requires an adequate infrastructure and operation. At present, the different energy sources (i.e., electricity, gas, district heating) are used separately without any connection to each other. To increase the flexibility of energy supply, the usage of energy hubs is a possible way. Energy hubs are connection points between the energy sources that comprise the key elements of so-called hybrid networks. Using the energy/hub approach, surpluses and power shortages from a specific energy network can be avoided. The hubs offer various technologies of energy conversion and can include electrical and thermal storage. Thus it is possible to convert electrical into thermal energy (heat pump, electric heating), chemical (gas) into thermal (furnace), or electrical energy (micro gas turbine) into, respectively, thermal and electrical energy (combined heat and power) depending on the used technology. The correct operating strategy for these energy hubs is an essential factor in order to minimize CO2 emissions of urban energy systems. Therefore, a simulation model was developed in MATLAB®. The minimization of CO2 emissions is based on a mixed-integer linear optimization of the overall system, consisting of the supplying infrastructure, energy hubs, and thermal/electric loads. First results have been obtained by a case study for an urban region supplied by three different energy carriers (gas, electricity, and district heating).

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Metadata
Title
Optimization of Load Flows in Urban Hybrid Networks
Authors
Thomas Kaufmann
Dominik Bothe
Wolfgang Gawlik
Karl Ponweiser
Copyright Year
2017
DOI
https://doi.org/10.1007/978-3-319-44899-2_1