This paper proposes a new method for distributed voltage control, which is effective on system re-configuration and improper motion of voltage control devices for distribution networks. The authors have so far proposed a distributed voltage control method for distribution networks by means of multi-agent framework, which is an optimal control both for minimizing tap changes and voltage deviations. In this paper, several effective ideas and functions are introduced to the proposed method to enhance the performance. The re-configuration is executed by management of system data using the management agent and blackboard memory and the improper motion is prevented by providing a new index to the agent. The effectiveness of the proposed scheme is demonstrated through numerical simulations with successful results.