In addition to the propeller and cup anemometers, there are other types that use different measurement methods, principles and ranges of wind speed. Figure 1 shows some examples, including the wind pressure anemometer and the sonic anemometer. This article gives an outline of the measurement principles and features of these devices. Method Using Wind Pressure …
Horizontal wind speed is the most important indicator of a site’s wind resource. For this reason, close attention should be paid to choosing appropriate anemometers for your project. Three general anemometer types are available for measuring horizontal wind speed Cup Anemometer: This instrument consists of a cup assembly (three or four cups) connected to a …
The heights and configuration of anemometers – can have a significant impact on the quality of a wind resource measurement campaign. With an insufficient number or poor choice of heights, you might not get an accurate measurement of the wind shear and hub- height wind speed. With improper configuration and orientation of the mounting boom …
Public Wind Measurements Publicly available wind data can be useful if the wind monitoring stations are in locations that are representative of sites of interest for wind projects. An example would be a tall tower on a ridgeline that runs parallel to a similar ridge under consideration. Tall towers instrumented specifically for wind energy are …
Good wind resource measurements are essential to the success of almost any wind project of a significant size. They play several important roles. First, and most obviously, wind measurements provide the inputs needed for accurately estimating the plant’s energy production. This is a concern of all project stakeholders, including developers, investors, lenders, and power companies. …
All wind measurement systems require a power source. The leading power supply options for instrumented towers are described below. Household Batteries The newest generation of loggers employ low-power electronic components whose operation can be sustained by common household batteries (D cells, 9-volt, and others) for six months to a year. This may be adequate for …
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In the modern society that advocates environmental protection, people use more natural energy, such as solar energy, wind energy and so on. But when using wind energy, it also needs an instrument to control it, so the wind speed sensor is produced, which is an instrument used to measure the wind speed. For this kind …
Knowing the direction of true north is essential for interpreting direction data, and is also useful during the tower layout and installation. In surprisingly many monitoring programmes, direction vanes and anemometers are not oriented in the correct, or documented, direction. This can cause significant errors in wind flow and wake modelling and result in a …
In train meteorological services, wind speed and wind direction are indispensable meteorological elements during train operation. The accuracy of wind speed and wind direction data will directly affect the safety of train operation. Therefore, in order to ensure the safe operation of trains, strong wind monitoring systems have been established in railway stations and railways …
Accurate anemometer calibration can only be performed in a wind tunnel. However, the installation of such a facility involves tremendous investment, and its setup and maintenance are not easy tasks. This section describes some simple methods of checking anemometer operation to achieve the minimum required level of performance. Comparison by Beaufort Scale Comparing wind speeds …