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  4. Optimized Load Management and Flexibility Coordination for Electrified Urban Public Transport
 
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Akronym
KOLA
Projekt Titel
Optimized Load Management and Flexibility Coordination for Electrified Urban Public Transport
Förderkennzeichen
01MV22005D
Funding code
945.02-001
Startdatum
July 1, 2022
Enddatum
June 30, 2026
Award URL
https://www.tuhh.de/ieet/en/research/research-projects/kola-bmwk
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Funder
Bundesministerium für Wirtschaft und Klimaschutz (BMWK)  
Projektträger
DLR Projektträger  
Institut
Elektrische Energietechnik E-6  
Projektleitung
Becker, Christian  orcid-logo
Co-Projektleitung
Teimourzadeh Baboli, Payam  orcid-logo
Mitarbeitende
Nußbaum, Finn Ole  
Steen, Anna-Lena  
Transport companies in Germany are progressively converting their fleets to zero-emission drives as part of the decarbonization process. E-buses are currently charged mostly via a charging management system that distributes the available power to the various buses on the basis of internal, operational criteria (state of charge, disposition, time of use, etc.). The current states of the power grid and power acquisition have not been taken into account so far, although it is known that the expansion of the charging infrastructure can lead to local overload situations in the distribution grid.

Therefore, the KoLa project investigates the flexibility potentials of E-bus charging at the depot of Hamburger Hochbahn AG in Alsterdorf. New functions for the existing load management are to be developed so that the charging of the E-buses can also be optimized and shifted in time in the future on the basis of external control variables (criteria on the electricity grid side such as grid utilization and criteria on the electricity market side such as electricity market prices). By utilizing this flexibility potential, the electricity supply can be optimized on the basis of ecological (e.g., only green electricity) or economic (e.g., inexpensive electricity) criteria. In order to ensure grid stability and minimize grid expansion despite flexible power usage, a coordination function (KOF) is being developed at the distribution grid level as part of the project. This IT platform ensures that the shifting of the charging processes happens in accordance with the current grid-side requirements.

The main focus of our contribution is the development of a method for the evaluation and selection of flexibility offers within the KOF and the development of a grid congestion forecast for the KOF. In addition, a distributed simulation and laboratory environment will be built to test the overall function before it is deployed in the field.
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