Yaw optimization control method based on airborne radar on-line yaw system

Abstract

The invention discloses a yaw optimization control method based on an airborne radar on-line yaw system. The method comprises the following steps that an airborne laser radar is adopted to measure wind regime parameters of a wind resource; a yaw error value is calculated according to the wind regime parameters measured by the airborne laser radar, and a unit yaw control PLC sends out a yaw instruction according to the yaw error value to conduct yaw optimization control. The airborne laser radar is arranged, the wind regime parameters in front of a wind wheel are measured according to the laser generated by the laser radar, the upcoming actual wind regime of a wind turbine can be known in advance, whether yawing is conducted or not is judged in advance, a wind turbine generator set conducts corresponding yawing strategies or other control strategies in advance according to the wind regime parameters, and finally, the effects of prolonging the unit operation life, improving the unit safe operation coefficient and improving the unit generating capacity are achieved.

Description

technical field [0001] The invention belongs to the field of wind turbine control, in particular to a yaw optimization control method based on an airborne radar online yaw system. Background technique [0002] With the increasing number of wind turbines connected to the grid, performance testing of wind turbines becomes more and more important. The yaw system is an important part of the wind turbine control system, and the yaw error is also an important performance index of the wind turbine, that is, the difference between the measured wind direction and the yaw angle of the unit has a great impact on the power generation. If it is too large, it will reduce the utilization rate of wind energy, reduce the power generation, increase the fatigue load of the unit and reduce the service life of the wind turbine. [0003] At present, wind turbines obtain wind energy to the greatest extent by controlling the yaw error. The measurement of wind direction in the control system is mai...

AI Technical Summary

Problems solved by technology

The yaw system is an important part of the wind turbine control system, and the yaw error is also an important performance index of the wind turbine, that is, the difference between the measured wind direction and the yaw angle of the unit has a great impact on the power generation. If it is too large, it will reduce the utilization rate of wind energy, reduce the power generation, increase the fatigue load of the unit and reduce the service life of the wind turbine

[0003] At present, wind turbines obtain wind energy to the greatest extent by controlling the yaw error. The measurement of wind direction in the control system is mainly done through the wind vane. Since the wind turbine operates in a complex external environment, such as low temperature and icing, the wind vane is often affected by the external environment. Due to the influence of complex environmental conditions, the wind direction cannot be accurately measured, and the decrease in accuracy leads to the inability of the wind turbine to obtain accurate yaw errors, which in turn affects the yaw control

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