Fault Identification of UHVDC Transmission Based on DF-AD and Ensemble Learning

Table 1

The change of signal sampling frequency under different DF values (time = 0.1 s).

Down-sampling factor	Data sample	Sampling frequency (kHz)
DF = 1	1280	12.8
DF = 2	640	6.4
DF = 4	320	3.2
DF = 8	160	1.6
DF = 16	80	0.8
DF = 32	40	0.4
DF = 64	20	0.2
DF = 128	10	0.1