ABNORMAL SIGN DIAGNOSIS SYSTEM FOR WIND TURBINE GENERATOR SYSTEM, MANAGEMENT DEVICE AND ABNORMAL SIGN DIAGNOSIS METHOD

摘要

To provide an abnormal sign diagnosis system for wind turbine generator system capable of precisely diagnosing a main shaft bearing replacement time.SOLUTION: An abnormal sign diagnosis system for wind turbine generator system comprises a wind power generator facility and a management device 100. The management device 100 includes a present diagnosis mode part 23 for diagnosing an abnormal sign of a main shaft bearing at the time of state of grease of the main shaft bearing of the wind power generator facility, and an estimation diagnosis mode part 24 for diagnosing an abnormal estimation at the main haft bearing at a future time in reference to a vibration initial value after taking a value of vibration of the main shaft bearing as an initial value, accumulation revolution speed of the main shaft of the wind power generator facility to be estimated from a time in which a predetermined time elapses from a starting in operation of the wind power generator facility and the vibration initial value at that time to estimate the main shaft bearing replacement time.SELECTED DRAWING: Figure 2