Quantifying the benefits of shared battery in a DSO-energy community cooperation
Challenge and objective
Local energy communities are forming as a way for prosumers and consumers to invest in distributed renewable energy sources, community storage and share electricity. Meanwhile, several distribution grids have voltage problems at certain hours of the year.
This article aims to study how a battery in an energy community can provide services to the distribution grid, by creating a linear optimisation model which includes power flow constraints and a battery degradation model.
Work performed
A linear optimisation model which includes power flow constraints and a battery degradation model is created.
Significant results
We find that the energy community should get 15 Euro per year due to an increase in electricity and degradation costs, which equals an increase of 0.12%, compared to when the community is not providing a service.
We find that voltage violations in the grid are sensitive to the battery replacement cost, electric vehicle charging peak and the average spot price, while the remuneration from the DSO is sensitive to the battery replacement cost.
For small battery sizes and a low power-to-energy ratio, the community is not able to improve the voltage at all hours of the year.
