The wind measurement tower is installed within the wind farm site, mostly in the form of a truss structure or a cylindrical structure, reinforced with steel strands and inclined tension, with a height generally ranging from 10 to 150 meters.
Anemometers, wind indicators, temperature and pressure monitoring devices are installed at different heights on the tower.
The wind conditions at the site can be observed 24/7 without interruption, and the measurement data is recorded and stored in the data recorder installed on the tower.
Wind measurement tower structural design: Common wind measurement tower structural forms include self-supporting and cable-stayed.
The lower part of the self-supporting wind measuring tower is wider, and the amount of tower material used is relatively large, which also requires higher foundation requirements; The tension of the wire type wind measurement tower is relatively reasonable, with high reliability, small tower body section, and small amount of tower material. However, the number of wire foundations is large and the construction process is complex.
The wind measurement tower can adopt structural forms such as single steel pipe, triangular truss, and quadrilateral truss.
The single steel pipe structure requires a large steel pipe diameter, a large windward area, and a large amount of material; The triangular truss structure is relatively stable, and the tower is less affected by wind loads; The quadrilateral truss structure is relatively stable. In general, when the triangular truss cannot meet the requirements of stress and deformation or is uneconomical, the tower can choose the quadrilateral truss structure.
The main functions of the wind measurement tower are environmental monitoring, collection of resource data such as wind, air pressure, and humidity.
Provide support for the installation of corresponding instruments and equipment.
Applicable units: power plant pre planning, island wind measurement, meteorological data collection, environmental monitoring and other departments.
Advantages: Small wind load coefficient and strong wind resistance.
The small windbreak area of the tower body is conducive to accurate and objective data collection, reducing the gap between measured data and actual data.
The collection tower column is connected by an external flange, with bolts under tension, not easily damaged, and reinforced with steel strands.
The tower column is arranged in a triangular shape, which saves steel, has a small follow-up, occupies a small area, saves land resources, and is cost-effective (only 1/3 or less of angle steel self-supporting towers). The site selection is convenient, the tower body has a light weight, transportation and installation are convenient, the construction period is short, the tower shape is designed to change with the wind load curve, the lines are smooth, and it is not easy to collapse in rare wind disasters, with a high safety factor
Execution standard: Measurement method for wind energy resources in wind farms (GB/T18709-2002)|
Wind resistance: capable of withstanding wind speeds of up to 60 meters per second; Seismic intensity: 8 degrees
Design weight:>1 ton (specific weight depends on the region, with slight differences between the western region, coastal windy areas, and central region).
Wind measurement data is used for wind resource assessment and investment prospect prediction.