Method, apparatus, electronic device for monitoring tower clearance
AssigneeGoldwind Science & Technology Co., Ltd.
InventorsHaitao Fang, Xiangnan Li, Qi Zhang, Wenlei Zhang
Life of this patent
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Abstract
The application provides a method, apparatus and electronic device for monitoring tower clearance. The method for monitoring tower clearance includes: obtaining a distance to an obstacle measured by a laser ranging device; calculating a measured clearance value of each laser based on a first distance of the laser; compensating the measured clearance value of each laser by a preset compensation formula to obtain a compensated clearance value of the laser; comparing a minimum compensated clearance value among N lasers with a preset clearance threshold; and performing safety protection for the wind turbine based on a comparison result.
Claims13
A method for monitoring tower clearance, comprising:
- emitting, by a laser ranging device, N lasers at different fixed angles toward a blade tip plane of a wind turbine, and measuring a distance to an obstacle by the lasers to obtain a first distance measured by each laser, wherein the laser ranging device is mounted eccentrically at a bottom of a nacelle of the wind turbine, and N is a positive integer greater than one;
- calculating a measured clearance value of each laser based on the first distance of the laser;
- compensating the measured clearance value of each laser by a preset compensation formula to obtain a compensated clearance value of the laser;
- comparing a minimum compensated clearance value among the N lasers with a preset clearance threshold;
- and
- controlling the wind turbine to shut down or pitch based on a comparison result.
A system for monitoring power clearance, comprising:
- a laser ranging device mounted eccentrically at a bottom of a nacelle of a wind turbine, and configured to emit N lasers at different fixed angles toward a blade tip plane, and measure a distance to an obstacle by the lasers to obtain a first distance measured by each laser, wherein N is a positive integer greater than one;
- and
- an electronic device including a processor, and a memory storing program instructions, wherein the processor, when executing the program instructions, implements operations comprising:
- calculating a measured clearance value of each laser based on the first distance of the laser;
- compensating the measured clearance value of each laser by a preset compensation formula to obtain a compensated clearance value of the laser;
- comparing a minimum compensated clearance value among the N lasers with a preset clearance threshold;
- and
- controlling the wind turbine to shut down or pitch based on a comparison result.
Dependencies are inferred from the claim text.