What should be paid attention to when replacing a mechanical anemometer with an ultrasonic anemometer?
1) Obviously, the machine manufacturer needs to cooperate to complete the data connection between the main control system and the ultrasonic anemometer. There are many details here, such as communication protocol or wiring method. But one thing to note,
After the main control software reads the wind direction data from the anemometer, it generally needs to do a coordinate transformation to match the yaw control strategy. The most important point here is whether the wind direction reading at point N of the replaced anemometer is consistent with the previous one.
2) Compared with the mechanical type, the ultrasonic anemometer is more expensive, not because of the price, but because its ultrasonic probe and the structure of the probe bracket must be properly protected. Because if the positional relationship and distance between them are affected, there will be obvious deviations in the wind measurement results.
Therefore, whether it is in the process of transportation or installation, the anemometer must be strictly protected from external force impact, extrusion, etc.
3) There will be a black rubber cap on some ultrasonic probes, and some installers who have obsessive-compulsive disorder and pursue perfection will remove it!
Don't do it, it's an important part of it.
4) Does the fixing bracket need to be redesigned? Because of the mechanical structure of the ultrasonic anemometer, it will have different requirements, whether it is necessary to redesign and modify the mounting bracket needs to be carefully evaluated
5) "Zero position", that is, the calibration of the N direction of the anemometer. This must be guaranteed according to the time of installation, because the accuracy of this will really affect the power generation.
