Control of Q/U for connecting remote farms of wind power plants in 110 kV networks

In many cases, renewable energy sources are built in locations where the distribution system has not sufficient capacity for connecting their power output into the network. Relatively long MV cable routes - even 15 to 20 km long - with a corresponding capacitive reactive power are being built for the connection of these sources to the distribution system at a suitable point of connection. Distribution system operators require from the manufacturer, in the whole range of output power, to maintain a neutral power factor at the point of common coupling (PCC) and/or, in the case of sources with higher power, their integration into the voltage regulation system. For fulfillment of these conditions, a regulator of the reactive power flow must be included into the connection of the wind park into the network.