Method, apparatus, electronic device for monitoring tower clearance

An apparatus for monitoring tower clearance, comprising:

• a first obtaining unit configured to obtain a distance to an obstacle measured by a laser ranging device, wherein the laser ranging device is mounted eccentrically at a bottom of a nacelle of a wind turbine, and the laser ranging device is configured to emit N lasers at different fixed angles toward a blade tip plane, and measure the distance to the obstacle by the lasers to obtain a first distance measured by each laser, wherein N is a positive integer greater than one;
• a first calculation unit configured to calculate a measured clearance value of each laser based on the first distance of the laser;
• a compensation unit configured to compensate the measured clearance value of each laser by a preset compensation formula to obtain a compensated clearance value of the laser;
• a comparison unit configured to compare a minimum compensated clearance value among the N lasers with a preset clearance threshold;
• and
• a safety protection unit configured to perform safety protection for the wind turbine based on a comparison result.

An electronic device, comprising:

• a processor, and a memory storing program instructions,
• wherein the processor, when executing the program instructions, implements operations comprising:
• obtaining a distance to an obstacle measured by a laser ranging device, wherein the laser ranging device is mounted eccentrically at a bottom of a nacelle of a wind turbine, and the laser ranging device is configured to emit N lasers at different fixed angles toward a blade tip plane, and measure the distance to the obstacle by the lasers to obtain a first distance measured by each laser, wherein 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;
• performing safety protection for the wind turbine based on a comparison result.