This paper proposes a study of the distribution line feeder voltage control method by the combination of power factor control method by the combination of the power factor control and the interconnection between the feeders. The proposed system is composed of two layers and consists of three types of agent: single feeder agent (F_AG) and feeder-group agent (FG_AG), and bus agent (B_AG). At first, F_AG carries out a self-contained voltage control in the feeder, then FG_AG tries to interconnect between the feeders. The voltage control strategies are implemented as the class definition of Java into the system. In order to verify the performance of the proposed method, it has been applied to a distribution model system. The simulation results show that the system is able to control the voltage to make effective use of the distributed generations. In addition, by changing the system configuration, it shows a possibility of reducing the amount of the power factor control.