Patent ID: 8433539

Claim:
A wind turbine monitoring device for monitoring the status of a wind turbine using attribute values created on the basis of measurement data measured by a plurality of sensors provided on the wind turbine, the wind turbine monitoring device comprising: a first storage unit in which a plurality of attribute values that are associated with a measurement timestamp are stored by attribute type, and in which, when the attribute values associated with the same measurement timestamp serve as a single dataset, identifying information indicating a class category that is set according to attribute values of prescribed attributes is assigned to the dataset and stored; a second storage unit in which a plurality of attribute values that are associated with a measurement timestamp are stored by attribute type, and in which, when the attribute values associated with the same measurement timestamp serve as a single dataset, identifying information that indicates a class category that is set according to the attribute values of prescribed attributes is assigned to the dataset, and the attribute values of the specific attributes forming the dataset belong to a prescribed standard range that is defined in advance; a diagnostics setting unit that extracts and sets a plurality of the datasets to be used in diagnosis from the first storage unit and that extracts and sets a plurality of the datasets to be used in the diagnosis from the second storage unit; an index-value calculating unit that calculates status index values representing the status of the wind turbine using a statistical calculation method, based on the datasets in a diagnostic data file and the datasets in a reference data file set by the diagnostics setting unit; an evaluation unit that evaluates the status of the wind turbine on the basis of the status index values calculated by the index-value calculating unit; and a notification unit that notifies a result of the evaluation by the evaluation unit.