With more and more photovoltaic connected to the grid, the voltage violation has become an important factor in restricting a large number of PV in distributed network. In order to solve this phenomenon, this paper studies the influence of many voltage regulation measures on distribution network PV accommodating capability. Firstly, considering constraint conditions of voltage not violation and power flow under load, it establishes a distributed PV accommodation model. Secondly, it analyzes the effect of PV accommodation after adding voltage regulation measures. Finally, it calculates the maximum grid-connected capacities before and after considering voltage regulation measures by using heuristics method. The IEEE33 bus distribution system is simulated and the restricted factors to the increase of PV capacities of each node is analyzed. The result shows that considering voltage regulation measures effectively improves the photovoltaic accommodation ability and avoids node voltage violation. This work is supported by National Natural Science Foundation of China (No. 51407113) and Shanghai Engineering Research Center of Green Energy Grid-Connected Technology (No. 13DZ2251900).