Exemplary study of an urban districts as flexibility option in medium voltage grids

Abstract:
This paper analyses a section of the medium voltage grid of the city of Wuppertal for the use of flexibilities as integration strategy for decentral energy resources and sector coupling units like heat pumps or electric vehicles. The key result of the analysis is that in future scenarios, the self-generated renewable energy supply of a city district is without using flexibility almost unfeasible - with flexibilities it is partial feasible. The self-sufficiency reaches only 18 % without flexibilities, in comparison with flexibility usage a self-sufficiency of 81 % can be reached. The important assessment criteria is that the exhaust of CO2 is significantly reduced by increasing self-sufficiency. The cost reduction achieved by means of the use of flexibility is less significant that the technical potentials. Such reduction is across the scenarios at the same level of the reference year 2020 in this case.