Hitachi Relion 670 Series Applications Manual page 96

Section 6
Wide area measurement system
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identifying PMUs in a system that has more than 65535 PMUs. The coding for the 16 bytes is
left to the user for assignment.
PMUdataStreamIDCODE: It refers to the 2-byte IDCODE field of the configuration frame and
data frame organization defined in 60255-118-2011 message format. It is a user assigned ID
number (1-65534) for each data stream sent out from the PMU. This is especially important
when having multiple data streams (multiple PMU functionality).
Note: The data stream IDCODE is a unique code for each and every data stream in one
physical PMU device. In the IED, there are 2 PMUREPORT instances available
(PMUREPORT:1 and PMUREPORT:2) corresponding to 2 independent data streams. The
user must set different IDCODEs for each instance.
PhasorFormat: It refers to the Bit 0 of the FORMAT field of the configuration frames 1, 2 and 3
organization defined in 60255-118-2011 message format. Here the user can select the format
of the calculated synchrophasors. The options are Rectangular or Polar format. Rectangular
format represents the synchrophasor as real and imaginary values, real value first (a + bj)
while the Polar format represents the synchrophasor as magnitude and angle, magnitude first
jα
(A e ).
PhasorDataType: It refers to the Bit 1 of the FORMAT field of the configuration frames 1, 2 and
3 organization defined in 60255-118-2011 message format. Here the user can select the data
type of the calculated synchrophasors. The options are Integer or Float data. The
synchrophasor data are sent via the PHASORS field of data frame organization of
60255-118-2011 message format. Depends on the phasor data type, the size of PHASORS
field can be 4 (Integer) or 8 (Float) bytes per 60255-118-2011 message.
Integer data type for the phasors corresponds to a 16-bit integer value. It represents a 16-bit
signed integer, range –32 767 to +32 767, in rectangular format, and in polar format it
represents a 16-bit unsigned integer range 0 to 65535 for the magnitude and a 16-bit signed
4
integer, in radians × 10 , range –31 416 to +31 416 for the angle.
Float data type for the phasors corresponds to 32-bit values in IEEE floating-point format. In
rectangular format, it represents real and imaginary, in engineering units (real value first) and
in polar format it represents magnitude and angle, in engineering units (magnitude first) and
angle in radians, range –π to + π.
AnalogDataType: It refers to the Bit 2 of the FORMAT field of the configuration frames 1, 2 and
3 organization defined in 60255-118-2011 message format. Here the user can select the type
of the analog data which are reported along with the synchrophasor data over 60255-118-2011
message. The options are Integer or Float data corresponding to the 16-bit integer or 32-bit
IEEE floating-point values, respectively. The analog data could be sampled data such as
control signal or transducer values, or it can be active and reactive power measurement
values from each feeder in the substation. Values and ranges are separately defined by user
via the parameter settings related to the ANALOGREPORT function block. The analog data
are sent via the ANALOG field of data frame organization of 60255-118-2011 message format.
Depends on the analog data type, the size of ANALOG field can be 2 (Integer) or 4 (Float)
bytes per 60255-118-2011 message. More information is available under the section
Factors for ANALOGREPORT
FrequencyDataType: It refers to the Bit 3 of the FORMAT field of the configuration frames 1, 2
and 3 organization defined in 60255-118-2011 message format. Here the user can select the
type of the frequency-deviation and rate-of-change-of-frequency data (FREQ/DFREQ) which
can be reported along with the synchrophasor data over 60255-118-2011 message. The
options are Integer or Float data corresponding to the 16-bit integer or 32-bit IEEE floating-
point value, respectively.
The frequency-deviation and rate-of-change-of-frequency data are sent via the FREQ and
DFREQ fields of data frame organization of 60255-118-2011 message format. Depends on the
selected data type, the size of each field can be 2 (Integer) or 4 (Float) bytes per
60255-118-2011 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. Integer data type for frequency-
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channels.
1MRK511407-UUS Rev. N
Scaling
Phasor measurement unit RES670
Application manual