DISTRIBUTED FAULT DETECTION METHOD FOR POWER DISTRIBUTION SYSTEM HAVING RESONANT GROUNDING

Disclosed is a distributed fault detection method for a power distribution system having resonant grounding, which belongs to the technical field of electric power automation. The invention comprises: detecting a fault according to a shift in neutral-to-earth voltage; using pre-fault and post-fault voltages (relatively) to identify a fault phase; and identifying a faulty feeder (and a fault region of a long feeder) according to the relationship between an initial transient of a zero-sequence current and a fault phase voltage after the occurrence of the fault. The invention uses voltage signals and current signals from corresponding voltage transformers and current transformers, such that protection devices in the same or different feeders do not need to communicate with each other to identify a faulty feeder. La présente invention concerne un procédé de détection de défaillance distribuée pour un système de distribution d'énergie ayant une mise à la masse résonante, qui appartient au domaine technique de l'au