Interlocking Relays in Txmission lines.
Interlocking Relays in Txmission lines.
(OP)
Hi guys
In our state in some of the stations we have interlock relays (zero,positive and negative sequence relays) in conjuction with distance protection and in some we don`t have these interlock relays.My question is how important are they and what do they do?
Thank you!!!
In our state in some of the stations we have interlock relays (zero,positive and negative sequence relays) in conjuction with distance protection and in some we don`t have these interlock relays.My question is how important are they and what do they do?
Thank you!!!






RE: Interlocking Relays in Txmission lines.
They may provide logic to establish varying operation of switchgear during a fault.
Partially related discussion at Thread238-66404
One non-preducer-specific reference is IEEE Std C37.113-1999 Guide for Protective Relay Applications to Transmission Lines Description (only) at http://standards.ieee.org/reading/ieee/std_public/description/relaying/C37.113-1999_desc.html