Health Status Assessment for Wind Turbine with Recurrent Neural Networks

Table 9

Performance criterions of the ELM for wind turbine 2.

SCADA variables	RMSE	MAE	BIAS	SDE
Generator speed	0.351	0.266	-0.248	0.248
Generator temperature	0.415	0.386	-0.376	0.176
Generator cooling air temperature	0.416	0.357	-0.351	0.223
Generator bearing temperature	0.063	0.046	-0.019	0.061
Gearbox temperature	0.264	0.195	-0.01	0.264
Gearbox bearing temperature	0.265	0.168	-0.121	0.235
Rotor speed	0.293	0.175	-0.183	0.266
Battery box temperature	0.251	0.239	-0.235	0.087
Hydraulic pressure	0.507	0.419	0.386	0.33
Shaft bearing temperature	0.204	0.184	-0.181	0.095
Top box temperature	0.256	0.185	0.134	0.218