ABB RELION 670 Series Applications Manual page 414

Section 19
Basic IED functions
19.5.2 Application
The rated system frequency and phase rotation direction are set under Main menu/
Configuration/ Power system/ Primary Values in the local HMI and PCM600 parameter setting
tree.
19.5.3 Setting guidelines
Set the system rated frequency. Refer to section
description on frequency tracking.
19.6 Summation block 3 phase 3PHSUM
19.6.1 Application
The analog summation block 3PHSUM function block is used in order to get the sum of two sets of
3 phase analog signals (of the same type) for those IED functions that might need it.
19.6.2 Setting guidelines
The summation block receives the three-phase signals from SMAI blocks. The summation block
has several settings.
SummationType : Summation type ( Group 1 + Group 2 , Group 1 - Group 2 , Group 2 - Group 1 or –
(Group 1 + Group 2) ).
DFTReference : The reference DFT block ( InternalDFT Ref , DFTRefGrp1 or External DFT ref ) .
DFTRefGrp1 : This setting means use own internal adaptive DFT reference ( this setting makes the
SUM3PH self DFT adaptive, that is, it will use the measured frequency for the summation signal to
adapt DFT).
InternalDFTRef : Gives fixed window DFT (to nominal system frequency).
ExternalDFTRef : This setting means that the DFT samples-per-cycle (adaptive DFT) will be
controlled by SMAI1 SPFCOUT.
FreqMeasMinVal : The minimum value of the voltage for which the frequency is calculated,
expressed as percent of
GlobalBaseSel : Selects the global base value group used by the function to define ( IBase ), ( VBase )
SBase ).
and (
19.7 Global base values GBASVAL
408
VBase base voltage setting (for each instance x).
"Signal matrix for analog inputs SMAI"
1MRK 505 337-UUS A
M15288-3 v6
M15292-3 v2
for
SEMOD55968-1 v2
SEMOD56004-4 v3
SEMOD56006-4 v7
GUID-2FDB0A2C-10FE-4954-B6E4-9DA2EEEF1668 v1
Application manual