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

Table 12

The running time of DWT (one approximation signal and eight detail signals).

DWT	Without noise (s)	20 dB (s)	30 dB (s)
f1	0.13	0.12	0.13
f2	0.13	0.13	0.12
f3	0.13	0.12	0.12
f4	0.12	0.12	0.12
f5	0.11	0.11	0.11
f6	0.12	0.12	0.12
f7	0.12	0.13	0.20