Grid connected wind turbines
A grid-connected system links the wind turbine to the existing mains electricity supply so that wind energy is utilised when it is available and exported when there is a surplus.
With domestic or other small scale systems, the wind turbine is linked to the grid via a "grid-connect" inverter. This device transforms the electricity generated by the turbine into mains voltage AC, synchronised precisely with the voltage and frequency of the grid. The inverter also performs various safety functions, constantly monitoring the grid and switching off in the event of a fault or major fluctuation in supply.
The output of the inverter is connected directly to a fuse box - feeding wind generated electricity into the building's conventional electricity supply. Electricity generated by the turbine is used within the building first with any surplus fed into the grid.
Wind Turbines should be sited away from obstacles
While the ideal site of a smooth rounded hilltop may not be available, any local buildings, trees (and their potential growth), cliff faces and other natural obstacles do need to be taken into consideration as they will all act to slow and disrupt wind flow. Other practical issues such cable routing and planning policies will also influence site selection.
