Grid Storage in LV Networks – An Appropriate Solution to Avoid Network Limitations in High RES Scenarios

Low voltage networks are poised to see huge transformations in the next decades. The aim for a carbon neutral economy asks for high level penetration of renewables, where PV production in LV networks is part of the general solution. The RES high penetration becomes however a threat for grid operation, through challenges such as keeping voltage level in the accepted band, avoiding grid congestion and reverse power flow or ensuring low level of energy losses. The paper analyses specific scenarios and suggests measures to address these limitations, by comparing business as usual operation with more advanced microgrid operation and the use of grid-side storage.