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

Large penetration of fluctuating renewable sources into the power system requires a substantial increase in the capacity of various energy storages. One of the most prominent options today is the penetration of electric vehicles, whose use reduces air pollution, while connecting them to the smart grids creates the possibility to increase the flexibility of the power system, since vehicle batteries could be used as storage but also as a source of electricity. The power system of the Republic of Croatia was modelled using the PLEXOS energy market simulation software and, based on results of different scenarios, the role of large penetration of electric vehicles in increasing the power system flexibility with a large share of renewable sources was observed. In the model, real data for wind and PV plants production in the Croatian power system was used, with the help of the PLEXOS tool, while electric vehicles were also modelled. The results of simulations have shown the advantages and disadvantages of the integration of electric vehicles into the system. The design and the analysis of the developed model of the Croatian power system showed that, in the future, electric vehicles could play one of the key roles in increasing the flexibility of the system with a large share of renewable energy sources.

Power system, wind plants ; PV plants ; electric vehicles ; power system flexibility ; PLEXOS

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