ABB Relion REQ650, Руководство по применению

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15.10.2 Application
Summation block 3 phase function 3PHSUM is used to get the sum of two sets of
three-phase analog signals (of the same type) for those IED functions that might need
it.
15.10.3 Setting guidelines
The summation block receives the three-phase signals from SMAI blocks. The
summation block has several settings.
GlobalBaseSel : Selects the global base value group used by the function to define
( IBase ), ( UBase ) and ( SBase ).
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 ) .
FreqMeasMinVal : The minimum value of the voltage for which the frequency is
calculated, expressed as percent of UBase (for each instance x).
15.11 Global base values GBASVAL
15.11.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Global base values GBASVAL - -
15.11.2 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 six different sets.
This is an advantage since all applicable functions in the IED use a single source of
base values. This facilitates consistency throughout the IED and also facilitates a
single point for updating values when necessary.
Each applicable function in the IED has a parameter, GlobalBaseSel , defining one out
of the six sets of GBASVAL functions.
Section 15
1MRK 505 291-UEN A
Basic IED functions
310
Application manual