GwindPP

Technical Specifications of Wind Turbines Some Technical Specifications of Wind Turbines:   Rated power is the maximum power that can be safely produced at the given range of wind speed by a wind turbine. For example, the rated power of 4000 kW at the range of 13-23 m/s wind speed.   The number of blades - horizontal axis three-bladed wind turbines are the most common.   Horizontal-axis rotors are upwind or downwind. For example, an upwind rotor with a clockwise rotation.   Wind turbine generators are synchronous or asynchronous. Synchronous generators are best suited with direct drive gearless systems and asynchronous generators with gears.   The Yaw system is a mechanism that allows turning a rotor in the upwind direction.   The power curve of a wind turbine is a curve that demonstrates power production and power coefficients at a specific range of wind speed.   Inside of the Nacelle of a Wind Turbine ...

Wind Resources Measurement   Wind speed is a key factor in the development of wind power projects.   Wind power varies by the cube of wind speed.   Wind resources measurement on a site for at least one year is needed to cover seasonal differences.   The recording of wind resources includes wind direction and wind speed.    After having the measurement data, it should be correlated with long-term meteorological data to estimate the average wind speed.   The roughness of the terrain is also a key for a wind turbine siting.   Wind resources assessment can be displayed by a wind rose , which shows the frequency of occurrence and speed of wind for each direction (see below).   The instruments for wind resources measurement:   Mechanical cup anemometers with wind vanes,   Sonic anemometer,   SODAR,    LiDAR.   A  met mast is needed to measure wind speed a...

Wind Power Costs and Benefits The costs and benefits of a wind power project vary depending on the wind turbine type, project capacity, location, energy mix, and energy system interconnections. The economic costs of wind power projects are: Capital,  Operations and maintenance, Network upgrade,  Voltage control,  Active power balancing (additional reserve and cycling),  Negative environmental externalities. The economic benefits of wind power projects are: Capacity,  Fuel-saving,  Environmental and health.