instance 1. On the other hand, since 3PHSUM is set to receive external DFT reference from SMAI3,therefore If settings for PHASORREPORT1 instances 1 and 2 above differ for SvcClass orReportRate, then 3PHSUM block will be affected by two different filtering at the same time whichis not possible. For example in Figure 43, PHASOR2 from PHASORREPORT1 instance 1 may not befully compliant with IEEE C37.118 standard.Note: If the SMAI reference block is not connected to any PHASORREPORT block, then 3PHSUMblock can be freely connected to any PHASORREPORT block regardless of its DFT referencesetting.Note: If more 3PHSUM blocks need to be used, all 3PHSUM blocks (using external DFT ref) have tobe connected to the same instance of PHASORREPORT blocks (PHASOR1-32 of Instance number 1or 2).Note: If settings SvcClass and ReportRate are the same for different instances of PHASORREPORTblocks, then 3PHSUM block can be freely connected to any of them regardless of 3PHSUM blockDFT reference setting or the reference SMAI block connection.Note: Violation of rules 2 or 3 results in non-compliancy with IEEE C37.118 standard for some of thesynchrophasors. In case of rule 2 violation, the non-compliancy only applies to synchrophasorsfrom instance 2 and the synchrophasors from instance 1 will be still compliant. The non-compliancy with the standard may be quite obvious as in case of rule 2 violation with differentSvcClass settings. This produces big angle error. On the other hand, it may be difficult to detectthe non-compliancy with the standard if rule 2 is violated with different ReportRates, or if rule 3 isviolated. In such cases, the synchrophasors may only fail to comply (with small error) in someparticular test case(s).For more information regarding 3PHSUM block application, please refer to RES670 ApplicationManual under section Basic IED functions.6.1.4 Setting guidelines GUID-83969957-DABF-4B9B-95C7-B9F0AF6E647A v1Based on the functionality and appearance in PCM600, the PMU reporting functionality iscategorized into 4 different categories (function block) as follows:1. PMUREPORT2. PHASORREPORT3. ANALOGREPORT4. BINARYREPORTEach category has its corresponding parameter settings except for BINARYREPORT function blockwhich does not have any specific parameters and settings.1. PMUREPORT is the main function block which controls the operation of other PMU reportingfunction blocks. Each instance of PMUREPORT function block has the following parameters:•Operation: Enables/Disables the operation of the corresponding instance of PMUreporting functionality by choosingOn/Off setting.•SvcClass: It refers to the 1-byte SVC_CLASS field of the configuration frame 3 (CFG-3)organization defined in IEEE C37.118.2 message format. Here the user can select theperformance class (service class) used for synchrophasor data measurement accordingto IEEE C37.118.1 standard. The options areP class orM class.Note: In RES670, there are 2 PMUREPORT instances available (PMUREPORT:1 andPMUREPORT:2) corresponding to 2 independent data streams. The user can setdifferent or identical service class for each data stream. In case of different serviceclasses, special rules shall be considered in PCM600 ACT for the connection of1MRK 511 364-UUS A Section 6Wide area measurement system91Application manual
