Integration of large-scale electrolysers in the Danish energy system
Authors
Term
4. Term
Publication year
2021
Submitted on
2021-06-03
Pages
131
Abstract
This thesis investigates the impacts of integrating large-scale electrolysers in the Danish energy system and transmission grid in 2030. A partial-equilibrium energy system model is applied to assess how the energy system should be composed, with regard to capacities of production, consumption and storage units. Subsequently, a DC load flow analysis is conducted to investigate how large-scale electrolysers impact loading of the transmission grid, based on electrolyser capacity, location and energy system composition. The theories regarding synoptic planning and the adequate level of detail are applied throughout the thesis. In the thesis it was found that large electrolyser capacities can facilitate increased integration of fluctuation renewable production units, and increase utilisation of these units. Furthermore, it was demonstrated that electrolysers can reduce the need for other flexible consumption units, such as electric boilers. From a transmission grid perspective it was evident that large electrolyser capacities can be integrated without overloading the grid, if electrolysers are placed in feed-in zones for offshore wind power plants, and are operated proportionally to the production of the wind power plants. If these criteria are met, larger electrolyser capacities can even reduce grid loading, as compared to lower electrolyser capacities.
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