ABB REC670 Applications Manual page 129

1MRK 511 401-UUS A
Bay control REC670 2.2 ANSI
Application manual
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 (A e
• 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
–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
ANALOGREPORT
• 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.
Wide area measurement system
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channels.
Section 6
4
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Scaling Factors for
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