Three-Pole Tripping - Hitachi Relion 670 Series Applications Manual

Section 15
Logic
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.
15.1.3.1

Three-pole tripping

Connect the inputs from the protection functions to the input TRINP_3P. The TMGAPC function block is
used to combine up to 32 inputs into one output. Connect the output TRIP to the binary outputs on the IO
board.
This signal can also be used for other purposes internally in the IED. An example could be the starting of
breaker failure protection. The three outputs TR_A, TR_B, and TR_C will always be activated at every
trip and can be utilized on individual trip outputs if single-pole operating devices are available on the
circuit breaker even when a three-pole tripping scheme is selected.
Set the function block to Program = 3 phase and set the required length of the trip pulse to for example,
tTripMin = 150ms.
The typical connection is shown below in
Protection functions with 3 phase
trip, for example time delayed
overcurrent protection
GUID-40F59978-9468-4491-8A25-669567A9456F V1 EN-US
Figure 84:
206
TMAGAPC
Tripping logic SMPPTRC (94) is used for a simple three-pole tripping application
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Figure 84.
SMPPTRC (94)
I3P I3P
V3P V3P
BLOCK BLOCK
BLKLKOUT BLKLKOUT
TRINALL TRINALL
TRINP_A TRINP_A
TRINP_B TRINP_B
TRINP_C TRINP_C
TRINN TRINN CLLKOUT CLLKOUT
PS_A PS_A BFI_3P BFI_3P
PS_B PS_B
PS_C PS_C
1PTRZ 1PTRZ
1PTRGF 1PTRGF
P3PTR P3PTR
SETLKOUT SETLKOUT
RSTLKOUT RSTLKOUT FLTIAMAG FLTIAMAG
CND CND FLTIAANG FLTIAANG
RSTFLTUI RSTFLTUI FLTIBMAG FLTIBMAG
FLTIBANG FLTIBANG
FLTICMAG FLTICMAG
FLTICANG FLTICANG
FLTINMAG FLTINMAG
FLTINANG FLTINANG
FLTVAMAG FLTVAMAG
FLTVAANG FLTVAANG
FLTVBMAG FLTVBMAG
FLTVBANG FLTVBANG
FLTVCMAG FLTVCMAG
FLTVCANG FLTVCANG
FLTVNMAG FLTVNMAG
FLTVNANG FLTVNANG
1MRK511407-UUS Rev. N
TRIP TRIP
TR_A TR_A
TR_B TR_B
TR_C TR_C
TRN TRN
TR1P TR1P
TR2P TR2P
TR3P TR3P
PU_A PU_A
PU_B PU_B
PU_C PU_C
PU_N PU_N
FW FW
REV REV
Phasor measurement unit RES670
Application manual
M14828-7 v12