METHOD AND MONITORING APPARATUS FOR AUTOMATED SURVEILLANCE OF A WIND TURBINE AND A METHOD FOR CREATING A LINEAR MODEL

摘要

The invention concerns a method for automated surveillance ofat least one wind turbine (41), comprising the followingprocess steps (21, 23, 18, 205 26, 27, 28, 29). One step is tocreate or retrieve at least one linear model (21, 23, 18)which represents at least one status parameter of the windturbine (41) and which comprises a plurality of linearcoef-ficients and at least one measurement variable, whereby thevalues of the linear coefficients are determined based ontest measurement values (MVt) for the measurement variableand the status parameter of the wind turbine (41). Anotherstep is to repeatedly capturing (25) momentary measurementvalues (30) for the measurement variables and the statuspa-rameter of the wind turbine (41). A further step is todeter-mine (26) at least one momentary reference value of thestatus parameter based on the momentary measurement valuesfor the measurement variables by using the linear model.An-other step is to generate wind turbine status information(29) based on the deviation of the momentary measurementvalue from the corresponding momentary reference value of thestatus parameter. The invention also concerns a monitoringapparatus for such a surveillance and a method for creating alinear model for use in the method or the monitoringappara-tus mentioned above.