Local voltage regulation influence on DG and distribution network

Distribution grids were initially not designed to house significant amount of distributed generation (DG). However, DSO experienced during the last few years a huge increase in penetration rate of renewables. Since DG has a major impact on the voltage level, its connection can result in voltage constraints that limit its integration or lead to grid investments. In such situations, using voltage control may relieve some constraints with no or limited investments. Higher penetration rate of DG will make generation facilities' contribution to voltage control a necessity in a near future, in addition to existing control devices (on-load tap changers).