ABB Relion 670 Series Applications Manual page 429

1MRK 511 401-UUS F
Section 16
16.1 Tripping logic SMPPTRC (94)
16.1.1 Identification
Function description
Tripping logic
16.1.2 Application
All trip signals from the different protection functions shall be routed through the trip logic. All
start signals and directional information can be routed through the trip logic as well. In its
simplest form, the trip logic will only link the TRIP signal to a binary output and make sure that the
pulse time is long enough.
Tripping logic SMPPTRC (94) offers three different operating modes:
• Three-pole tripping for all fault types (3p operating mode)
• Single-pole tripping for single-phase faults and three-pole tripping for multi-phase and
evolving faults (1p/3p operating mode).
• Single-pole tripping for single-pole faults, two-pole tripping for two-pole faults and three-pole
tripping for three-pole faults (1p/2p/3p operating mode).
The logic also issues a three-pole tripping command when phase selection within the operating
protection functions is not possible, or when external conditions request three-pole tripping. To
meet the different double, breaker-and-a-half and other multiple circuit breaker arrangements,
multiple identical SMPPTRC (94) function blocks are provided within the IED. In such installation,
use one instance of SMPPTRC function per circuit breaker.
If the OHL is connected to the substation via more than one breaker, one SMPPTRC (94) function
block should be used for each breaker. For example when single-pole tripping and autoreclosing is
used on the line, both breakers are normally set up for 1/3-pole tripping and 1/3-phase
autoreclosing. Alternatively, the breaker chosen as master can have single-pole tripping, while the
slave breaker could have three-pole tripping and autoreclosing. In the case of a permanent fault,
only one of the breakers has to be operated when the fault is energized a second time. In the event
of a transient fault the slave breaker performs a three-pole reclosing onto the non-faulted line.
The same philosophy can be used for two-pole tripping and autoreclosing.
To prevent closing of a circuit breaker after a trip, the function offers a lockout function.
Bay control REC670
Application manual
Logic
IEC 61850
identification
SMPPTRC
© Copyright 2017 ABB. All rights reserved
IEC 60617 ANSI/IEEE C37.2
identification device number
94
1 -> 0
IEC15000314 V1 EN-US
Section 16
Logic
IP14576-1 v4
SEMOD56226-2 v7
M12252-3 v11
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