Redundant communications in a protective relay

Details Redundant communications in a protective relay Redundant communications in a protective relay

1998-06-05

1999-11-09

Jackson, Stephen W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Feeder protection in distribution networks

361 64, 361 66, 361115, H02H 300

Patent

active

059825952

ABSTRACT:
A redundant communications scheme for a protective relay which allows high-speed, reliable, and fault tolerant communications between peer protective devices in a power distribution network. Communications over a selectable primary communication channel are interrupted and switched to a secondary communication channel, which can operate according to a different communication protocol, when a fault is detected on the primary communication channel. The fault detection and switching is performed transparently to the main protective relay processor.

REFERENCES:
patent: 3725818 (1973-04-01), Nurmohamed et al.
patent: 4528611 (1985-07-01), Udren
patent: 4899383 (1990-02-01), Einolf, Jr. et al.
patent: 4972290 (1990-11-01), Sun et al.

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