Fan wind alignment optimization method and system based on vibration and inclination angle

Abstract

The invention relates to a fan wind alignment optimization method and system based on vibration and an inclination angle. The optimization method comprises the following steps that S1, an inclination sensor is used to monitor the inclination angle theta of the projection of a deflecting fan tower cylinder in the x-axis or y-axis direction when the wind speed is stable, so as to judge the wind direction; S2, a vibration sensor is adopted to monitor components of the projection of the vibration amplitude of the fan tower cylinder in the x-axis direction and the y-axis direction when the wind speed is unstable, and therefore the wind direction can be obtained according to vector synthesis; and S3, the recognized wind direction data are fed back to a fan yaw system, the fan yaw system makes a judgment, the blade position is adjusted, and fan wind alignment optimization is achieved. The optimization system comprises a data acquisition module, a wireless transmission module and a communication module. The optimization system further comprises a sensor group, and the sensor group comprises the inclination sensor and the vibration sensor. According to the method and the system, the wind direction is identified and calibrated by using the vibration and inclination angle generated in the operation process of the fan tower cylinder, and the method and the system have the characteristics of low cost, high performance, high reliability and the like.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a method and system for wind optimization of a fan based on vibration and inclination. Background technique [0002] In the actual situation of wind turbine operation, the measurement of the wind direction in the yaw system is mainly done through the wind vane, which is easily affected by the environment and installation errors during the operation of the wind turbine, and its installation position is at the tail of the nacelle, which is inevitably affected by the wind vane. The turbulence of the flow makes it impossible to accurately measure the wind direction, resulting in the wind turbine yaw system being unable to accurately face the wind; and some wind farms are affected by problems such as frequent changes in wind direction, large wind direction changes, and turbulence in the wind field, making it more difficult to measure the wind . These objecti...

AI Technical Summary

Problems solved by technology

Although in recent years, some practitioners and experts have studied various algorithms to correct the wind direction of wind turbines and verified the effectiveness of using the historical data of SCADA system to correct the wind direction, but due to the complexity of the operating environment of wind turbines, there are deviations in data collection. Moreover, the operating conditions of the wind turbines considered by the algorithm are relatively ideal, and the data used are not comprehensive, resulting in poor generalization performance of the algorithm and cannot be applied to every wind turbine.

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