Early warning method and system for judging failure of yaw bearing

• Main Authors: LIANG KAI, MA YAN, WANG DEQIANG, WU GUANGCHAO, LI HUAIYUAN, ZANG FANG, WU DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2021
• Subjects: BLASTING; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PHYSICS; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention provides an early warning method and system for judging failure of a yaw bearing. According to the method, the active power of a fan is divided into boxes, the acceleration and the active power of a cabin are fitted, and the slope and the intercept of a fitting straight line are calculated to carry out abnormal early warning of the yaw bearing. Compared with an existing method for predicting the life cycle and the performance change of the yaw bearing by calculating the load of each part of the yaw bearing so as to early warn the bearing fault problem, the method has the advantages that the yaw operation parameters are analyzed and calculated, the implementation difficulty is small, the cost is low, the evaluation effect is greatly improved, the hidden danger and the trend ofthe yaw bearing can be found in advance through failure early warning, and the occurrence of faults caused by the aggravation and development of the hidden danger is avoided. 本发明提供了一种判断偏航轴承失效的预警方法及系统，本发明通过对风机有功功率进行分箱并且拟合机舱加速