Influence of voltage rise suppression control with constant output power at the introduction of large photovoltaic device to the end of distribution system

In recent years, an introduction of the photovoltaic (PV) devices has been increasing by promoting the use of renewable energy. The magnitude of the receiving-end voltage is influenced by the PV output power and the impedance of the distribution line. In this paper, we focused leading power factor controls of the power conditioning system for suppression of the receiving end voltage rise. The influences of the controls on PV output power, line loss and power inflowing to substation were qualitatively analyzed by using vector diagrams. The leading power factor required to suppress the voltage rise to the specified value was quantitatively discussed.