Alstom MiCOM P546 - Page 448

P54x/EN AP/La4 Application Notes
(AP) 6-4 MiCOM P543, P544, P545 & P546
AP
3.4 VT connections 62
3.4.1 Open delta (vee connected) VT's 62
3.4.2 VT single point earthing 62
3.5 Trip circuit supervision (TCS) 62
3.5.1 TCS scheme 1 63
3.5.1.1 Scheme description 63
3.5.1.2 Scheme 1 PSL 63
3.5.2 TCS scheme 2 64
3.5.2.1 Scheme description 64
3.5.2.2 Scheme 2 PSL 65
3.5.3 TCS scheme 3 65
3.5.3.1 Scheme description 65
3.5.3.2 Scheme 3 PSL 66
3.6 Intermicom
64
application example 66
3.6.1 InterMiCOM
64
mapping for three ended application – BLOCKING or PUR example 66
3.6.2 Intermicom
64
application example general advice 68
3.6.3 Three-ended applications 68
3.6.4 Intermicom
64
application example scheme description 69
3.6.5 Intermicom
64
application example channel supervision 69
3.6.6 Intermicom
64
application example transfer trip 70
3.6.7 InterMiCOM
64
application example - mapping for two ended application 70
3.6.8 Intermicom
64
application example - dual redundant communications channels 70
3.6.9 Intermicom
64
application example - scheme co-ordination timers 70
3.6.9.1 InterMiCOM
64
application example - distance PUR permissive underreach 70
3.6.9.2 InterMiCOM
64
application example - distance POR permissive overreach 70
3.6.9.3 InterMiCOM
64
application example - distance blocking 71
3.6.9.4 InterMiCOM
64
application example - directional earth Fault (DEF) POR permissive overreach
71
3.6.9.5 InterMiCOM
64
application example - directional earth fault (DEF) blocking 71
3.6.9.6 InterMiCOM
64
application example - delta directional POR permissive overreach 71
3.6.9.7 InterMiCOM
64
application example - delta directional blocking 71
3.6.10 Fallback mode for InterMiCOM
64
bits 71
4. APPLICAT
ION OF NON PROTECTION FUNCTIONS 72
4.1 Single and three phase auto-reclosing 72
4.1.1 Time delayed and high speed auto-reclosing 72
4.1.2 Auto-reclose logic operating sequence 72
4.1.3 Setting guidelines 72
4.1.3.1 Circuit breaker healthy 72
4.1.3.2 Number of shots 72
4.1.3.3 Dead timer setting 73
4.1.3.4 Follower time setting (P544 and P546 only) 73
4.1.3.5 De-ionizing time 74