Fault location in power networks with mixed feeders using the complex space-phasor and Hilbert–Huang transform

The paper introduces a practical approach to power system fault location in power networks using advanced fault signal processing. The three-phase fault voltages are converted to the vector of absolute values of its complex space-phasor. This vector represents fault traveling wave and it is further processed for fault location finding with the Hilbert–Huang transform. The simulation results, including single line to ground faults, faults in mixed feeders and high-impedance arcing faults, confirm the accuracy and practical applicability of the proposed approach.

► New method for fault location in power transmission networks. ► Employs space-phasor and Hilbert Huang transform. ► Offers higher accuracy than previously proposed fault location procedures. ► Offers accurate fault location even in the presence of high-impedance arcing faults. ► Confirmed by simulation results, including faults in mixed feeders.