As Vietnam continues expanding its wind power development, accurate wind data collection has become essential for evaluating project potential and minimizing investment risks. According to technical information provided by Thinh Phong Co., Ltd., the process of constructing a wind measurement station compliant with IEC 61400-12-1 requires strict adherence from site survey and mast design to installation, operation, and data management.
1. Site Survey
Thinh Phong states that the site survey is the first and most critical step to ensure that the mast location accurately represents the wind conditions of the entire project area. The technical team assesses terrain characteristics, surrounding obstacles, prevailing wind directions, accessibility, and safety factors before finalizing a suitable location.
2. Mast Design According to IEC Standards
The mast design is developed in alignment with IEC requirements. This includes mast height (equivalent to 70–100% of the proposed turbine hub height), sensor arrangement, guy-wire system, and weather-resistant structural materials. The design minimizes aerodynamic interference and ensures stability under strong wind conditions.
3. Selection of Certified Sensors
All sensors must be calibrated in laboratories accredited under ISO/IEC 17025. The equipment list includes:
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Wind speed sensors (anemometers)
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Wind direction sensors (wind vanes)
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Auxiliary sensors such as temperature, pressure, and humidity
Thinh Phong emphasizes that using IEC-compliant sensors helps reduce measurement errors and increases data reliability.
4. Installation of the Measurement Station
Installation includes erecting the mast, tensioning guy wires, mounting sensors, and setting up the power system. The primary anemometer is placed at the highest position, while other sensors are mounted according to IEC-defined distances and orientation. The power system typically uses a solar panel and backup battery to ensure uninterrupted operation.
5. Configuration and Operation of the Data Logger
The data logger is configured to record data at 1–10 second intervals and produce 10-minute average values in compliance with IEC standards. It can transmit data automatically via GSM/4G and issue alerts in cases of sensor failure or power loss.
6. Data Validation and Analysis
Wind data undergoes regular validation to remove invalid values, evaluate data continuity, and cross-check measurements between sensors. According to Thinh Phong, only datasets with 90% or higher data availability are suitable for wind resource modeling and annual energy production (AEP) estimation.
7. Maintenance and Monitoring
Routine maintenance is carried out throughout the station’s operation. Tasks include sensor inspections, guy-wire tension checks, power system verification, and communication system maintenance. These activities ensure continuous data quality and operational safety.
Conclusion
The process of constructing an IEC-compliant wind measurement station requires precision and strict technical discipline. Information provided by Thinh Phong Co., Ltd. highlights that following the correct procedure not only ensures high-quality data but is also crucial for investment planning, turbine siting, and production optimization in wind energy projects across Vietnam.
