ABB Relion 670 Series Applications Manual page 590

Section 24
Basic IED functions
24.5.3 Setting guidelines
Set the system rated frequency. Refer to section
description on frequency tracking.
24.6 Summation block 3 phase 3PHSUM
24.6.1 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.
24.6.2 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
SUM3PH self DFT adaptive, that is, it will use the measured frequency for the summation
the
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 ),
UBase ) and ( SBase ).
(
24.7 Global base values GBASVAL
24.7.1 Identification
Function description
Global base values
24.7.2 Application
Global base values function (GBASVAL) is used to provide global values, common for all
applicable functions within the IED. One set of global values consists of values for current,
voltage and apparent power and it is possible to have twelve different sets.
584
UBase base voltage setting (for each instance x).
IEC 61850
identification
GBASVAL
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"Signal matrix for analog inputs SMAI"
IEC 60617 ANSI/IEEE C37.2
identification device number
- -
1MRK 511 401-UEN Rev. K
M15292-3 v2
for
SEMOD55968-1 v2
SEMOD56004-4 v3
SEMOD56006-4 v7
GUID-2FDB0A2C-10FE-4954-B6E4-9DA2EEEF1668 v1
GUID-0D5405BE-E669-44C8-A208-3A4C86D39115 v3
GUID-D58ECA9A-9771-443D-BF84-8EF582A346BF v4
Bay control REC670
Application manual