Abstract:Aiming at the difficulties of detecting noisy traveling waves in the fault location of distribution network power cable lines，this paper proposes a fault traveling wave location method for power cable based on the parameter-optimized variational mode decomposition（VMD）and the novel Teager energy operator（NTEO）. The grey wolf optimizer is used to optimize the VMD parameters and to extract the high-frequency modal components with fault characteristics. Then， the NTEO is adopted to calculate the differences of the modal components and accurately calibrate the arrival time of the first fault traveling wave. Finally，the wave velocity and fault location are calculated. Simulation results verify the correctness and effectiveness of the proposed method.