System for detecting fault location in substation

Details System for detecting fault location in substation System for detecting fault location in substation

G - Physics

01

R

324/29, 324/58.0

G01R 31/08 (2006.01) G01R 15/24 (2006.01) H04B 3/46 (2006.01)

Patent

CA 1330578

SYSTEM FOR DETECTING FAULT LOCATION IN SUBSTATION Abstract of the Disclosure A system for detecting a fault occurred within a substation and judging a location of the fault including optical current sensors each having a Faraday element arranged on a top of an insulator post of a bus disconnecting switch, a magnetic core arranged to surround a terminal plate of the disconnecting switch to generate a magnetic field corresponding to a current passing through the terminal plate, a laser diode for emitting a laser light beam, an optical fiber for guiding the laser beam to the Faraday element, a photodiode, and an optical fiber for guiding the laser beam transmitted through the Faraday element to the photodiode. The photodiode supplies a signal representing the current passing through the terminal plate to a fault location judging circuit in which the fault location within the substation is judged from the signals from the photodiodes.

601040

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