Ultrasonic measurement system for wind speed in front of wind turbine rotor

Abstract

The invention relates to an ultrasonic measurement system for wind speed in front of a wind turbine rotor, comprising at least one data acquisition module installed in the hubcap, and a data acquisition processor installed in the nacelle; the data acquisition module is composed of an airspeed sensor and a gyroscope , the gyroscope is integrated on the base of the airspeed sensor; the data acquisition processor is integrated with a temperature and humidity sensor, an air pressure sensor, a data acquisition card, a data processing and analysis module; the data acquisition card communicates with the airspeed sensor, gyroscope, temperature The humidity sensor and air pressure sensor are connected to transmit the collected data to the data processing and analysis module for data processing and analysis; the data processing and analysis module includes a working condition sound velocity calibration module, a parameter correction module, a state monitoring module, and an online measurement module. The invention can accurately measure the value of the wind speed and wind direction in front of the wind rotor of the wind turbine, improve the power generation efficiency of the wind turbine, and reduce the measurement uncertainty problem caused by the measurement of the wind speed behind the wind rotor.

Description

technical field [0001] The invention belongs to the field of wind power generation, in particular to an ultrasonic measurement system for wind speed in front of a wind rotor of a wind turbine. Background technique [0002] With the rapid development of wind power technology, how to convert wind energy into electrical energy with maximum efficiency through wind turbines has become an important content of wind power technology research. Due to the randomness of the incoming wind speed and the large sweeping area of ​​the wind turbine, the current industry usually uses the incoming wind speed at the center of the front hub of the wind rotor as the reference wind speed for the control system. In addition, the wind speed value at the center of the front hub of the wind turbine rotor and the incoming flow angle are important indicators for drawing the power curve and evaluating the load level of the wind turbine. Therefore, the accuracy of incoming flow speed detection is an impo...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a wind speed ultrasonic measurement system in front of the wind wheel of a wind turbine, which solves the problem of high installation accuracy requirements in the prior art, lack of equipment fault tolerance and self-correction functions, resulting in the need to dismantle and reinstall to destroy the rigidity of the hubcap if the installation is inaccurate, and The wind measurement results are affected by large components such as wind rotors and nacelles, the measurement results are inaccurate, and the existing technology leads to installation differences between devices, resulting in the need to perform parameter calibration for each device separately

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