Patent-family-84569824

Computer-implemented method for monitoring a generator (13) of a wind turbine (1) for detecting interturn short-circuit faults in at least one stator winding set (15, 23) of the generator (13), wherein a strength of a second harmonic of a power produced from the stator winding set (15, 23) and the DC value of the power are determined,
wherein, in respective time steps,
- a first analysis criterion describing the DC value of the power being constant evaluates the DC value of the power,
- a second analysis criterion describing the occurrence of a transient in the strength of the second harmonic evaluates the strength of the second harmonic, and
- an interturn short-circuit fault signal is generated if the first and the second analysis criterion both yield true for a given number of time steps.