This thesis studies the effects of increasing shares of variable renewable energies (VREs), such as wind and solar energy, on the European power system and evaluates two VRE system integration measures: transmission grid extensions and energy sector coupling. The results show that important smoothing can be achieved with transmission grid extensions, leading to an increased contribution of VREs to the power supply. Energy sector coupling opens the possibility to use temporary excess electricity in an economic manner. The power-to-heat coupling emerges as the most attractive option. At the same time, it is demonstrated that a more flexible system design reduces the impacts of VREs on the electricity market. The infrastructure measures can thus facilitate the market integration of VREs.
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This thesis studies the effects of increasing shares of variable renewable energies (VREs), such as wind and solar energy, on the European power system and evaluates two VRE system integration measures: transmission grid extensions and energy sector coupling. The results show that important smoothing can be achieved with transmission grid extensions, leading to an increased contribution of VREs to the power supply. Energy sector coupling opens the possibility to use temporary excess electricity...
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