Assist with technical support and detailed design for the electrical connection of a new wind farm.  The scope included investigation and detailed design for all of the implications to the existing 33 kV network.   During the initial stages of the investigation it had been envisaged the wind farm would connect directly to the nearest Grid substation via a 110 kV circuit.  When cost benefit analysis of this option was not favourable other alternatives were investigated. Ultimately the scope changed to have the windfarm connected by two 33 kV circuits, one a new direct 33 kV circuit to the Grid substation and a second a 33 kV circuit embedding the generation into the existing distribution Network.  This required a new 33/11 kV substation at a previous 33 kV Tee point upgraded protection at three Substations and a new 33/11 kV zone substation at nearby. 

Connecting the wind farm at 33 kV, embedding the wind farm in the existing network, and upgrading the protection on the 33 kV interconnected network to unit protection reduced capital costs and overall losses and improved security of supply to Raglan.