Overvoltage directional relay

Details Overvoltage directional relay Overvoltage directional relay

1982-07-29

1984-06-05

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

H02H 338

Patent

active

044531915

ABSTRACT:
Disclosed is an overvoltage directional relay that forms a part of a relay system which provides protection for a high voltage three phase transmission line. The overvoltage directional relay provides a high speed blocking function for use with the high speed tripping functions in the protective relay system. In one embodiment the directional relay utilizes the negative-sequence components of the three phase transmission lines. In another embodiment the directional relay utilizes the zero-sequence component of the three phase transmission line.

REFERENCES:
patent: 4161011 (1979-07-01), Wilkinson
patent: 4296451 (1981-10-01), Wilkinson
patent: 4297740 (1981-10-01), Hagberg
patent: 4351011 (1982-09-01), Liberman

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