Carland Cross wind project was set up in South West England, UK It was completed in 1992 and is owned by ScottishPower.
It is near Cornwall, Newquay.
See below for data.
Wind farms, as a general rule demand wind speeds of 4.5 metres per second or more.
An ideal destination for a project like Carland Cross could have a near constant flow of non-turbulent wind all year round, with a minimum likelihood of abrupt effective bursts of wind. An important factor of turbine siting is furthermore admission to local demand or transmission capaCornwall, Newquay.
Before building, Carland Cross was probably screened on the foundation of a wind atlas, and validated with wind specifications. Meteorological wind data alone is usually not ample for correct siting of a large wind power project.
Collection of site-specific data for wind speed and direction could have been essential to determining site potential to be able to finance the project. Local winds are frequently watched for a year or more, and detailed wind maps made before wind generators are installed.
The wind blows more rapidly at greater altitudes due to the reduced influence of drag. The increase in velocity with altitude is most remarkable close to the surface and is affected by topography, surface roughness, and upwind obstructions such as trees or buildings. Velocity increases with altitude and it is more pronounced near land and is altered by landscape, surface and obstructions.
Wind speeds raising with altitude is part of a wind energy law. This South West Englands wind speed rises with the 7th root of altitude. Doubling the height of a turbine, then, boosts the predicted wind speeds by 10%, and the predicted power by 34%.
In general, a length of 7D (7 × Rotor Diameter of the Wind Turbine) is set between each turbine in a fully developed wind farm. However this may not be the way it is in hilly areas.
Carland Cross turbines are linked via medium voltage lines and communications.
At a substation, that medium-voltage electric current is increased in voltage using a transformer for link with the high voltage transmission system. Building of a land-based wind farm requires installation of the collector system and substation, and perhaps access roads to each turbine site.