In order to improves the performance of ranging

by comprehensive analysis the characteristics of mainfrequency parameters fault location method and traveling wave method

this paper presents a new method whichtakes into account the characteristics and application of those two fault location methods. First

based on the voltagedistributon along the transmission line

according the tangent intersection of two voltage distribution curve to recog-nize the fault distance approximately

then obtained the accurate location results by A-type traveling-wave method.The proposed method by introducing traveling wave to evades the iterative calculation of frequency parameters faultlocation

keeps clear of false root or no convergence;use main frequency parameters method to narrow the search fur-ther

overcomes the difficulty in recognizing traveling-wave fronts. The simulation indicates that the proposed meth-od not only have higher precision than main frequency parameters method

but also have the ability to accuratelyidentify wave fronts.