Application of Wavelet Packet and Fuzzy Algorithm in Power System Short Circuit Fault Classification

Table 1

Three-phase short-circuit fault types.

Fault type		A	B	C
Single-phase grounding fault	A-G	0	Normal	Normal
	B-G	Normal	0	Normal
	C-G	Normal	Normal	0
Two-phase short-circuit fault	A-B	=	=	Normal
	B–C	Normal	=	=
	C-A	=	Normal	=
Two-phase grounding fault	A-B-G	0	0	Normal
	B–C-G	Normal	0	0
	C-A-G	0	Normal	0
Three-phase short-circuit fault	A-B-C	0	0	0