I. Introduction
In germany, technically effective and economically efficient voltage control is one of today's major challenges to increase the hosting capacity of low voltage (LV) grids for additional distributed generation (DG) capacity (e.g., photovoltaic (PV)). Besides classical grid reinforcement measures, additional controllability of DG units (e.g., reactive power provision, active power curtailment) and new Smart Grid technologies, such as distribution transformer with on-load tap changer (OLTC), offer additional ways of voltage control. This paper set a focus on autonomously operating voltage control strategies (VCS), which do not require any additional information from remote entities and hence rely on locally measured values only (i.e., no communication between controlling entities).