Section 12 System protection and control12.1 Multipurpose filter SMAIHPAC12.1.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberMultipurpose filter SMAIHPAC - -12.1.2 FunctionalityThe multi-purpose filter function block, SMAIHPAC, is arranged as a three-phasefilter. It has very much the same user interface (e.g. inputs and outputs) as the standardpre-processing function block SMAI. However the main difference is that it can beused to extract any frequency component from the input signal. Thus it can, forexample, be used to build sub-synchronous resonance protection for synchronousgenerator.12.1.3 Function blockSMAIHPACBLOCKG3P*AI3PAI1AI2AI3AI4IEC13000180-1-en.vsdIEC13000180 V1 EN12.1.4 SignalsTable 338:SMAIHPAC Input signalsName Type Default DescriptionG3P GROUPSIGNAL- Analog input group from SMAIBLOCK BOOLEAN 0 Block of function1MRK502052-UEN B Section 12System protection and control595Technical manual
