Abstract: The static voltage profile of loaded nodes in a radially chained distribution network interconnecting with a number of distributed generation (DG) systems was studied. Three typical load distribution models, i.e., the decreasing, increasing and isosceles models, were developed to discuss the voltage profile in such a distribution network quantitatively in association with the restrictions on DG's location and capacity. A simulation example was given to investigate the impact of DG's location and capacity on the static voltage, and the results showed that the interconnections between DGs and distribution network will support the voltage, while the improper location and capacity of DG may cause overvoltage and increase the network loss. Therefore, a reasonable allocation is necessary for DGs to ensure that the static voltage of every loaded node is within the permissible range.