Areva MiCOM P441, Technical Manual

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Update Documentation P44x/EN AD/E44
MiCOM P441, P442 & P444
Page 67/82
Save IED GOOSE setting files
1. Select Save or Save As from the File menu.
Print IED GOOSE setting files
1. Select Print from the File menu.
2. The Print Options dialogue is displayed allowing formatting of the printed file to be
configured.
3. Click OK after making required selections.
9.10 New Function : Inter MiCOM features
9.10.1 InterMiCOM Teleprotection
InterMiCOM is a protection signalling system that is an optional feature of MiCOM Px40
relays and provides a cost-effective alternative to discrete carrier equipment. InterMiCOM
sends eight signals between the two relays in the scheme, with each signal having a
selectable operation mode to provide an optimal combination of speed, security and
dependability in accordance with the application. Once the information is received, it may be
assigned in the Programmable Scheme Logic to any function as specified by the user’s
application.
9.10.2 Protection Signalling
In order to achieve fast fault clearance and correct discrimination for faults anywhere within a
high voltage power network, it is necessary to signal between the points at which protection
relays are connected. Two distinct types of protection signalling can be identified:
9.10.2.1 Unit protection Schemes
In these schemes the signalling channel is used to convey analog data concerning the power
system between relays, typically current magnitude and/or phase. These unit protection
schemes are not covered by InterMiCOM, with the MiCOM P54x range of current differential
and phase comparison relays available.
9.10.2.2 Teleprotection – Channel Aided Schemes
In these schemes the signalling channel is used to convey simple ON/OFF data (from a local
protection device) thereby providing some additional information to a remote device which
can be used to accelerate in-zone fault clearance and/or prevent out-of-zone tripping. This
kind of protection signalling has been discussed earlier in this chapter, and InterMiCOM
provides the ideal means to configure the schemes in the P443 relay.