Wind measurement information

Wind measurements - what for?

Meteorological measurements, including wind measurement, are required for many different applications, such as weather forecasting, agricultural meteorology, industrial monitoring or for other research areas. All these disciplines have specific conditions that require customised measuring technology. Wind measurements are essential in the field of wind energy generation and the development of wind farms. The highest standard of wind measurement and the most accurate measuring technology is required for assessing potential wind farm sites and for monitoring and maintaining existing wind farms.

Prior to setting up a wind farm, wind is measured by professional wind consultants for the preparation of a wind site assessment. These measuring campaigns usually last for at least 12 months, during which wind measurement data is continuously gathered at regular intervals without interruption. Afterwards the measurement data is processed and evaluated and then compared to long-term meteorological data (e.g. data from adjacent weather stations) to assess, whether the site will be suitable for the erection of a wind park. Once a wind farm is in operation, wind measurements are required for wind farm monitoring, such as turbine performance and for collecting data to evaluate profitability (for example with SCADA systems).

The construction of a profitable wind farm requires the most accurate and reliable wind measurement technology. The choice of appropriate measurement equipment and its correct installation are crucial. Measuring equipment must perform as precisely as possible as the data quality is essential for producing accurate wind site assessments. A small discrepancy of only 3% in the evaluation of wind speed data drastically multiplies during assessment calculations and results in a loss of 7 digit economic figures. To evaluate whether a wind park will be profitable, investors and banks require wind site assessments based on the most accurate measurement data. Compared to the costs for the construction of a new wind farm, the costs for a high standard measuring system are trivial.

Several international standards for wind measurement are in place. The regulation IEC 61400-12-1:2005 (E) is the most significant, describing the optimal installation of masts, traverses and sensors. Conforming to these standards, along with taking the advice of professional wind consultants and manufacturers of measuring systems will ensure that your wind park investment pay off.

We have prepared a brochure for you with detailed information and advice on how to perform accurate wind measurement. Our new Wind Info brochure, "Measuring wind - know-how for successful wind measurements" is now available for download.

Download: Ammonit wind info brochure