SCHEMES FOR REDUNDANCY BY INFORMATION EXCHANGE BETWEEN RELAYS IN POWER SYSTEM
Publication Date: 2012-Jun-29
The IP.com Prior Art Database
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The idea of redundancy in protection and control IEDs and their different configurations to achieve higher reliability has been proposed. Three configurations Master-Slave, Slave-Master and Peer-Peer using the IEC61850 GOOSE communication profile are proposed. Here, the main IED used for protection and control is called the master IED and the redundant IED is the slave IED. It is through an IED’s settings the behavior of the IED be controlled or influenced. The startup settings for the applications would be stored in the master IED. The identification of a master or slave (or follower IED in peer-peer case) shall be handled using settings. The slave or follower shall keep a copy of setting file sent by the master or peer (updated using FTP or constructed using slow periodic GOOSE messages). This file shall be updated (as its own settings) by the slave or follower after adequate checks and user confirmations.