Clearance monitoring system of wind turbine set, and monitoring method and device
AssigneeBeijing Goldwind Science & Creation Windpower Equipment Co., Ltd.
InventorsXinle Li, Qi Zhang
Life of this patent
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Abstract
A clearance monitoring system of a wind turbine, and a monitoring method and device are provided. The clearance monitoring system includes a processor and a millimeter wave radar in communication connection to the processor. The millimeter wave radar is installed on a left side portion of a nacelle of the wind turbine. The millimeter wave radar points to a movement area of the impeller and is used for monitoring movement data of each blade on the impeller in the movement area. The processor is used to receive the movement data. According to the movement data, blade clearance between each blade and a tower of the wind turbine is determined.
Claims15
A clearance monitoring system for a wind turbine, comprising:
- a processor and a millimeter-wave radar communicatively connected to the processor, wherein
- a nacelle of the wind turbine has a nacelle casing extending along a central axis of an impeller of the wind turbine, the nacelle casing comprises a nacelle bottom wall close to a tower of the wind turbine, a nacelle top wall away from the tower and a nacelle side wall connecting the nacelle bottom wall and the nacelle top wall, wherein the millimeter-wave radar is configured to be mounted on the nacelle side wall close to the nacelle top wall, and be located on a left side portion, viewed in a direction from the nacelle toward the impeller, of an outer side of the nacelle of the wind turbine, a detection direction of the millimeter-wave radar is directed to a lower left of a motion area where the impeller rotates around the central axis thereof, and the millimeter-wave radar is configured to monitor motion data of each blade in the motion area;
- and
- the processor is configured to determine, based on the motion data, a blade clearance between each of the blades and the tower of the wind turbine.
A clearance monitoring method for a wind turbine, comprising:
- acquiring motion data, monitored by a millimeter-wave radar, of each blade in a motion area where the blades rotate around a central axis of an impeller, wherein a nacelle of the wind turbine has a nacelle casing extending along the central axis of the impeller of the wind turbine, the nacelle casing comprises a nacelle bottom wall close to a tower of the wind turbine, a nacelle top wall away from the tower and a nacelle side wall connecting the nacelle bottom wall and the nacelle top wall, wherein the millimeter-wave radar is configured to be mounted on the nacelle side wall close to the nacelle top wall, and be located on a left side portion, viewed in a direction from the nacelle toward the impeller, of an outer side of the nacelle of the wind turbine, and a detection direction of the millimeter-wave radar is directed to a lower left of the motion area where the impeller rotates around the central axis thereof;
- determining, based on the motion data, trail information of a blade tip moving toward the tower;
- and
- determining, based on the trail information, a blade clearance between each of the blades and the tower.
A clearance monitoring apparatus for a wind turbine, comprising:
- an acquiring module, configured to acquire motion data, monitored by a millimeter-wave radar of each blade in a motion area where the blades rotate around a central axis of an impeller, wherein a nacelle of the wind turbine has a nacelle casing extending along the central axis of the impeller of the wind turbine, the nacelle casing comprises a nacelle bottom wall close to a tower of the wind turbine, a nacelle top wall away from the tower and a nacelle side wall connecting the nacelle bottom wall and the nacelle top wall, wherein the millimeter-wave radar is configured to be mounted on the nacelle side wall close to the nacelle top wall, and be located on a left side portion, viewed in a direction from the nacelle toward the impeller, of an outer side of the nacelle of the wind turbine, a detection direction of the millimeter-wave radar is directed to a lower left of the motion area where the impeller rotates around the central axis thereof;
- and
- a distance measuring module, configured to determine, based on the motion data, a blade clearance between each of the blades and the tower.
Dependencies are inferred from the claim text.