Using bus wiring of the second kind and considering the transformer and bus distribution capacitance

a transmission line model is established.Aerial mode component of travelling wave is decomposed into wavelet coefficients by using wavelet transform and then further processed by modulus maxima.Making use of pattern recognition

a membership function is establish for calibrating the initial wave-front of the travelling wave

the reflection wave from fault point

and the reflection wave from the remote bus in order to get a set of moments（t1m

t2m

t3m）.Through fault location

two corresponding fault distances x and（L-x） are achieved

in which one is false.And the removal method of the false root is given.Theoretical analysis and EMTP simulation indicate that the present location method can avoid the effect of wave velocity

and gains high location accuracy

better anti-jamming and anti-transition resistance performances.