21.6.1 Application SEMOD56004-4 v3The analog summation block 3PHSUM function block is used in order to get thesum of two sets of 3 phase analog signals (of the same type) for those IEDfunctions that might need it.21.6.2 Setting guidelines SEMOD56006-4 v7The summation block receives the three-phase signals from SMAI blocks. Thesummation block has several settings.SummationType: Summation type (Group 1 + Group 2, Group 1 - Group 2, Group2 - Group 1 or –(Group 1 + Group 2)).DFTReference: The reference DFT block (InternalDFT Ref,DFTRefGrp1 orExternal DFT ref) .DFTRefGrp1: This setting means use own internal adaptive DFT reference ( thissetting makes the SUM3PH self DFT adaptive, that is, it will use the measuredfrequency 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 (adaptiveDFT) will be controlled by SMAI1 SPFCOUT.FreqMeasMinVal: The minimum value of the voltage for which the frequency iscalculated, expressed as percent of UBasebase voltage setting (for each instance x).GlobalBaseSel: Selects the global base value group used by the function to define(IBase), (UBase) and (SBase).21.7 Global base values GBASVAL GUID-2FDB0A2C-10FE-4954-B6E4-9DA2EEEF1668 v121.7.1 IdentificationGUID-0D5405BE-E669-44C8-A208-3A4C86D39115 v3Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberGlobal base values GBASVAL - -21.7.2 Application GUID-D58ECA9A-9771-443D-BF84-8EF582A346BF v4Global base values function (GBASVAL) is used to provide global values,common for all applicable functions within the IED. One set of global values1MRK 505 393-UEN B Section 21Basic IED functionsLine differential protection RED650 2.2 IEC 407Application manual
