METHOD OF LOCATING SHORT CIRCUIT AND DAMAGE TO DC AND AC OVERHEAD CONTACT SYSTEM AND DEVICE THEREFOR Russian patent published in 2016 - IPC G01R31/08 

FIELD: electricity.

SUBSTANCE: group of inventions relates to equipment for locating electric faults, mainly on railway transport. Short circuit (SC) locally is fixed on based on threshold principle of determining short circuit current at current-conducting parts of contact network, at a distance therefrom them, or earthing leads of supports or bridges, tunnels, overpasses, or close to current-conducting parts in area of magnetic (electromagnetic) effect, or on rolling stock. Deviation of power supply line elements from design position is measured. Information is transmitted to a reception station through a transponder, located in any place, which serves a group of sensors in radio visibility zone, and then via communication channels to nearest station, transformer substation, station for partitioning, dispatcher station.

EFFECT: possibility of determining specific path, section, number of path (and, or group), where short circuit occurred and (or) damage at both station and at span, as well as possibility of determining section with violation of design position of power supply line elements.

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