A Voltage Control Strategy for Distribution Networks with Dispersed Generations

In recent years, many kinds of dispersed generations (DGs) have been introduced to distribution networks. The number of these DGs is expected to increase in the near future. In the present distribution network situation, the magnitude of voltage drops can be predicted to some extent because the directions of power flows are always one way from generators to loads. However, when DGs are connected in distribution networks, voltage profiles become complex. Therefore, the magnitude of voltage drops cannot be predicted and voltage violations might occur. In this paper, we propose two new voltage control strategies by introducing additional ampere meters in order to solve this problem. Numerical simulations have been carried out using a 32 bus system to verify the validity of the proposed methods, and successful results have been obtained.