Protection Blocking Example - ABB RELION REX640 Engineering Manual

1MRS759117 A
5.7.1
REX640
Engineering Manual
The mode of all logical nodes located under the CTRL logical device is set with
Control mode. Control mode is selected via the HMI or PCM600 path Configuration/
Control/General. By default, Control mode can only be set locally through LHMI.
Control mode inherits its value from Test mode but Control mode "On", "Blocked"
and "Off" can also be independently set. Control mode is also available via IEC 61850
communication (CTRL.LLN0.Mod).
Table 8: Control mode
Control mode Description
On Normal operation
Blocked Control function commands blocked
Off Control functions disabled
According to IEC 61850, the physical outputs to process should be blocked when the
device is set to blocked or test blocked mode. The usage depends on the ACT
configuration. In the protection blocking example the main trip from TRPPTRC1 is
blocked, and in the control blocking example CBXCBR1 is blocked. Both comply
with IEC 61850. In real applications some of PTRC's might also be used for signalling
purposes (GOOSE) and blocking and interlocking via IO.

Protection blocking example

The physical outputs to process can be blocked with "IED blocked" and "IED test and
blocked" modes. If physical outputs need to be blocked, the application configuration
must block the signals or the function blocks that affect primary apparatuses. The
blocking scheme needs to use the BEH_BLK output of the PROTECTION function
block.
Protection
BI_SG_2 SG_LOGIC_SEL
BI_SG_3 SG_1_ACT
BI_SG_4 SG_2_ACT
BI_SG_5 SG_3_ACT
BI_SG_6 SG_4_ACT
SG_5_ACT
SG_6_ACT
BEH_TEST
BEH_BLK
GUID-BA7A67DB-3170-445A-9527-0809D251DA08 V1 EN
Figure 70: Master trip TRPPTRC blocked using Protection function block
BEH_BLK
Protection and control engineering
TRPPTRC1
BLOCK
OPERATE
RST_LKOUT
output
Section 5
Control BEH_BLK
FALSE
TRUE
FALSE
TRIP TRPPTRC1_TRIP
CL_LKOUT
93