| 摘要 |
PROBLEM TO BE SOLVED: To provide a monitoring method and a monitoring system for a wind turbine generator by which appropriate maintenance timing according to states of the wind turbine generator can be set.SOLUTION: A wind turbine generator 1 is monitored which is configured to generate power by transmitting the energy of wind inputted to a rotor 4 to a generator 18 via an energy transfer pathway extending from the rotor 4 including a blade 5 and a hub 6 to the generator 18. In a monitoring method, energy transfer efficiency in a monitored region is calculated from input energy inputted to the monitored region such as a hydraulic transmission 10 located on the energy transfer pathway and output energy outputted from the monitored region, a change with time is obtained from the past calculated energy transfer efficiency, the energy transfer efficiency in the future is estimated based on the change with time, and maintenance timing is determined based on the estimated energy transfer efficiency. |
