MSc programme:
by Ioannis Moles
Study no 090915
Presentation
| Date & time: |
Thursday 8th September 2011, at 9.30-10.45am |
| Location: |
CET/DTU Elektro, Building 325, Room 043 |
| Examiner: |
Jørgen Falck Christensen |
Period
2011-02-01 to 2011-06-30
Supervisor
Qiuwei Wu
Arne Hejde Nielsen
EES/CET DTU Electrical Engineering
External Supervisor
Anders Foosnæs
Dansk Energi
Background
Deploying a large number of electric vehicles (EVs) has become a realistic option with the development of EV technology, especially the performance improvement of batteries for EVs. The EVs spreading in the grid provide a flexible demand resource for system operators to handle the balancing challenge of future power systems with more intermittent energy sources, e.g. wind power, solar power, etc. On top of that, the EVs can feed power back to the grid to provide ancillary service for the system which is called vehicle to grid (V2G).
Although the EV deployment is very promising, the extra demand of EV charging has to be handled in a good manner that the EV charging will neither damage the grid nor cause voltage issues. Among different parts of the power systems, the local grid is the critical part to seamlessly integrate a large number of EVs into power systems.
Project description
The project will investigate the impact of different EV charging scenarios on local low voltage and medium voltage grids regarding the loading of power components like cables, transformers, etc. and voltage profile with EV charging. Beside the impact study, the methodology of calculating available capacity of local grids for EV charging will also be investigated. The grid data of Bornholm Island will be used to carry out the study.
The project comprises a few parts which are listed below.
- Literature review of EV integration and impact study of EV integration on local grids
- Be familiar with the local grid model in DIgSILENT PowerFactory
- Carry out impact study on low voltage grid
- Carry out impact study on 10 kV medium voltage grid
- Available capacity calculation for both low voltage and medium voltage grids
- Report writing
The project is part of the EDISON project and the study will be carried out using DIgSILENT PowerFactory.
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