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Power System with Large Share of Renewable Energy Source and Role of Electric Vehicles in Increasing Power System Flexibility

Fuel combustion in the transport sector significantly contributes to the total greenhouse gas emissions (GHG). In the European Union (EU) member states transport accounts for 33.1% of total final energy consumption, while the share of transport in total greenhouse gas emissions is 23%. Enabling electrification of the transport sector, as well as promoting electricity production based mainly on RES, would enable achieving EU's policy of low-carbon economy, which aims to reduce GHG by 80-95% by 2050. EVs provide the possibility of storing electricity, which opens new possibilities for integration of RES into the grid In order to achieve set goals in reduction GHG emissions, it is paramount to change the way electricity is produced, distributed and consumed While RES contributes to a decrease of the environmental impact and to an increase in self-sustainability of national energy systems, many aspects of the power system are affected by the increased share of such sources. Electric vehicles and pumped-storage HPPs provide the possibility of storing electricity, which opens new opportunities for the integration of RES into the grid. Relatively large number of EVs is needed to ensure sufficient energy storage and, if the EVs are charging in periods of peak load, the conventional power plants with quick response must generate so that the additional load caused by high number of EVs is covered It would certainly be beneficial to analyse scenarios with and without electric vehicles, but to also include the costs of the building the needed infrastructure, especially the charging stations.

Power System ; Renewable Energy Sources ; Electric Vehicles ; Power System Flexibility

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