Aiming at the problem of fault location errors caused by the uncertainty of travelling wave velocity, this paper proposes a new fault location method that requires no wave velocity and transmission line radian information. Firstly, a denoise method through multi?scale wavelet transform for the fault signal is described. Secondly, the arrival time parameters of initial traveling wave at different buses are measured. Furthermore, the influences of wave speed and radian of transmission line are eliminated by those time parameters in fault distance expressions. In addition, this paper compares the different fault location results with and without transformers. The simulation results show that although the error will be larger when considering a transformer, this method has higher accuracy and reliability in most cases.