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 (A e
jα
).
• PhasorDataType: It refers to the Bit 1 of the FORMAT field of the
configuration frames 1, 2 and 3 organization defined in IEEE C37.118.2
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 IEEE C37.118.2
message format. Depends on the phasor data type, the size of PHASORS field
can be 4 (Integer) or 8 (Float) bytes per IEEE C37.118.2 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 integer, in radians × 10
4
, 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 IEEE C37.118.2
message format. Here the user can select the type of the analog data which are
reported along with the synchrophasor data over IEEE C37.118.2 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 IEEE C37.118.2 message format. Depends
on the analog data type, the size of ANALOG field can be 2 (Integer) or 4
(Float) bytes per IEEE C37.118.2 message. More information is available
under the section
Scaling Factors for ANALOGREPORT channels.
• FrequencyDataType: It refers to the Bit 3 of the FORMAT field of the
configuration frames 1, 2 and 3 organization defined in IEEE C37.118.2
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 IEEE C37.118.2 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 IEEE C37.118.2
1MRK 506 369-UUS - Section 6
Wide area measurement system
Line distance protection REL670 2.2 ANSI 131
Application manual
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