In this paper three decentralised voltage control approaches, using reactive power supplied by photovoltaic (PV) inverters, are compared with respect to their capabilities to limit the voltage rise within a balanced low voltage system with a high level of PV penetration. Two of these voltage control approaches fall into the static reactive power supply methods category, according to the pending German guideline for generators connected to low voltage distribution networks. The third approach uses a dynamic reactive power controller to adjust the reactive power output of the PV inverter in order to maintain a preset voltage limitation. The simulation results show, that both static reactive power supply methods are capable of reducing voltage magnitudes within a low voltage network and hence can contribute to increasing the distribution systems absorption capacity for installed PV systems. However an even higher absorption capacity can be achieved by applying the dynamic voltage control approach. Compared to no reactive power provision, the absorption capacity of the low voltage network for PV systems could be more than doubled by using the dynamic voltage control approach.