Method and device for monitoring blade clearance of wind driven generator through phased array radar

The invention discloses a method and device for monitoring clearance of blades of a wind driven generator through phased array radar, and the method comprises the following steps: arranging a phased array radar device at a tower footing, and enabling the phased array radar device to sequentially tra...

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Bibliographische Detailangaben
Hauptverfasser:	QIN XINGCHAO, LI PENG, WANG JIALONG, ZHANG MIN, ZENG XIONGYING, ZHANG JIANGHE, GAO SAI, XIE HONG, LIANG XIAODONG, SHI ZELONG, HUANG CHENGGANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES BLASTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ENGINEERING ELEMENTS AND UNITS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MACHINES OR ENGINES FOR LIQUIDS MEASURING MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PHYSICS PRODUCING MECHANICAL POWER RADIO DIRECTION-FINDING RADIO NAVIGATION STANDS OR SUPPORTS TESTING THERMAL INSULATION IN GENERAL WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	The invention discloses a method and device for monitoring clearance of blades of a wind driven generator through phased array radar, and the method comprises the following steps: arranging a phased array radar device at a tower footing, and enabling the phased array radar device to sequentially transmit wave beams through a plurality of radars which are linearly arranged according to a set time difference, the wave beams are superposed to form a main wave beam of the reinforced signal, and the main wave beam forms a blade monitoring area; synchronously adjusting an elevation angle of a radar transmitting beam to ensure that a blade monitoring area covers a moving track of a blade tip part of the fan blade; blade distance measurement data are collected in real time, the blade clearance distance is obtained through calculation, and when the blade clearance distance is smaller than a set clearance safety value, an alarm is given out. The method has the advantages that the fan blade clearance is monitored in rea