Research on the Voltage Regulation of Distribution Network with Distributed Photovoltaic

In response to the national call to improve power utilization efficiency and the proportion of clean electricity, reduce fossil fuel consumption, waste water, waste gas emissions and the loss of long-distance power transmission, the distributed photovoltaic capacity in distribution network in China power grid is constantly increasing, which brings difficulties to the voltage control in the distribution network. In this paper, the voltage control of distribution network with distributed photovoltaic (PV) is studied. First, the theoretical formula of distribution network voltage profile is given. Then the effect of voltage regulation of PV inverter, paralleling reactor and on-load transformer tapping is studied and verified in an 8-users simulation system. Finally, based on the actual situation of China's distribution network, a regional combined voltage regulation control method is proposed.