Daisen IV wind project was installed in Tottori, Japan It was finished in 2007 and is owned by .
It is near Daisen Town.
See below for data.
Wind farms, as a general rule require wind speeds of 4.5 metres per second or more.
A perfect place for a project like Daisen IV would have a near constant flow of non-turbulent wind all year long, with a minimum chance of abrupt potent bursts of wind. An essential aspect of turbine siting is moreover admittance to local requirement or transmission capaDaisen Town.
During the planning stages the Daisen IV wind farm would’ve been checked and authenticated through wind measurements. Meteorological wind data alone is usually not sufficient for accurate siting of a large wind power project.
Collection of site-specific data for wind speed and direction would have been essential to determining site potential as a way to finance the project. Winds around Daisen Town are examined for over a year or so plus the introduction of detailed maps. Only then are wind turbines installed.
Altitude would also have a part to performin a project like Daisen IV. This is due to drag The boost in velocity with altitude is most remarkable at the surface and is affected by topography, surface roughness, and upwind obstructions such as trees or buildings. Velocity boosts with altitude and is more pronounced near land and is changed by geography, surface and limitations.
Normally, the rise of wind speeds with growing height follows a wind profile power law, which forecasts that wind speed rises proportionately to the seventh root of altitude. Increasing the height of a turbine, then, increases the expected wind speeds by 10%, and the anticipated power by 34%.
In general, a range of 7D (7 × Rotor Diameter of the Wind Turbine) is defined between each turbine in a fully developed wind farm. But micrositing increases placement, particularly in hilly areas.
Individual turbines at Daisen IV are interlocked with a medium voltage (usually 34.5 kV) power collection system and communications network.
At a substation, this kind of medium-voltage electric current is enhanced in voltage using a transformer for link with the high voltage transmission system. Development of a land-based wind farm requires installation of the collector system and substation, and possibly roads to every turbine site.