ABB Relion 670 Series Applications Manual page 117

1MRK 511 401-UUS F
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2. PHASORREPORT is the function block responsible for reporting the synchrophasors. Each
instance of PMUREPORT function block has 32 phasor channels with the following setting
parameters; where X is a number from 1 to 32:
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Bay control REC670
Application manual
Depends on the selected data type, the size of each field can be 2 (Integer) or 4 (Float)
bytes per IEEE C37.118.2 message.
The data sent via the FREQ field is frequency deviation from nominal frequency (50 Hz or
60 Hz), in mHz. It is ranged from –32.767 to +32.767 Hz.
deviation data represents 16-bit signed integers, range –32 767 to +32 767 32, and
data type represents actual frequency value in IEEE floating-point format.
The data sent via the DFREQ field is Rate Of Change Of Frequency (ROCOF), in Hertz per
second times 100. It is ranged from –327.67 to +327.67 Hz per second.
for ROCOF data represents 16-bit signed integers, range –32 767 to +32 767 32, and
data type represents actual value in IEEE floating-point format.
SendFreqInfo : Enables/Disables sending of the frequency-deviation and Rate Of Change
Of Frequency (ROCOF) data by choosing
ReportRate : It refers to the 2-byte DATA_RATE field of the configuration frames 1, 2 and
3 organization defined in IEEE C37.118.2 message format. The DATA_RATE field is
identifying the Rate of phasor data transmissions by a 2-byte integer word (–32 767 to
+32 767). Here the user can select the synchrophasor data reporting rate from the PMU
based on the number of frames per second.
In general, the IED has 5 different reporting rates (10, 25, 50, 100, 200 fr/s) on the 50 Hz
system frequency, and has 8 different reporting rates (10, 12, 15, 20, 30, 60, 120, 240
fr/s) on the 60 Hz system frequency. The options are as follows:
• 10/10 fr/s (60/50Hz)
• 12/10 fr/s (60/50Hz)
• 15/10 fr/s (60/50Hz)
• 20/25 fr/s (60/50Hz)
• 30/25 fr/s (60/50Hz)
• 60/50 fr/s (60/50Hz)
• 120/100 fr/s (60/50Hz)
• 240/200 fr/s (60/50Hz)
The first number is identifying the reporting rate in a 60Hz system, and the second
number is the reporting rate in a 50Hz system. For example, if the selected setting is
15/10 fr/s (60/50Hz) , this means that the synchrophasor data reporting rate would be
15 frames per second if the system frequency is 60Hz. Likewise, if the system frequency
is 50Hz, the selected rate is equal to 10 frames per second.
RptTimetag : It refers to the method of time-tagging used in the IED which is related to
the phasor estimation and filtering technique. The options are
MiddleSample and LastSample . The time-stamp of the PMU output represents the
phasor equivalent, frequency, and ROCOF of the power system signal at the time it is
applied to the PMU input. All of these estimates must be compensated for PMU
processing delays including analog input filtering, sampling, and estimation group
delay. If the sample time tags are compensated for all input delays, the time tag of the
sample in the middle of the estimation window can be used for the phasor estimation
(output) time tag as long as the filtering coefficients are symmetrical across the
filtering window.
Note: It is recommended to set this parameter on
PhasorXReport : Enables/Disables the phasor channel X (reporting of PhasorX) by
On / Off setting.
choosing
PhasorX : The group selector for PhasorX. Here, the user can select the type of reported
synchrophasor from the phasor channel X as either a 3-phase symmetrical component
or a single-phase phasor. The options are as follows:
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Integer data type for frequency-
On / Off setting.
FirstSample ,
MiddleSample .
Section 6
Wide area measurement system
Float
Integer data type
Float
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