Directional wave detector apparatus

Details Directional wave detector apparatus Directional wave detector apparatus

1981-05-01

1982-09-21

Miller, J. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

324 52, G01R 3108, H02H 338

Patent

active

043510116

ABSTRACT:
In directional wave detector apparatus for electrical power line relay protection devices determining the direction to a fault, the current and voltage of the travelling waves generated by a fault point are combined at a measuring point and the sign of the combined signal is determined. A tripping or blocking signal is emitted depending on whether the sign of the combined signal indicates that the fault lies within or outside the range protection of the relay protection device.

REFERENCES:
patent: 3878460 (1975-04-01), Nimmersjo
patent: 4063166 (1977-12-01), Glavitsch
patent: 4079435 (1978-03-01), Zaslavskaya
patent: 4100587 (1978-07-01), Anderson

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