A 12 Megawatt Power Plant with Fully Implemented Ancillary Services According to the German Grid Codes – The First Results

Since April 2011 all photovoltaic power plants connected in parallel with the German medium voltage network must comply with the TR3, TR4 and TR8 technical guidelines published by the Fordergesellschaft Windenergie FGW (Federation of German Windpower and other Renewable Energies). This includes requirements to activeand reactive-power, power quality, connection and disconnection of the plant to/from the network, immunity to faults on the network and requirements for certified simulation models. This paper gives a brief description about the implementation of the required functions (ancillary services) and shows some of the first obtained detailed results from a 12 MV photovoltaic power plant located in Busenwurth, northern Germany, equipped with approximate 720 string-inverters.