Hitachi Relion 670 Series Applications Manual page 44

Section 3
Configuration
frequency-deviation and rate-of-change-of-frequency data. In the standard B20 configuration, in addition
to frequency data, first instance of PMU (first data stream) is reporting 32 synchrophasors over IEEE
C37.118/1344; that is eight 3-phase synchrophasors and 24 single phase synchrophasors corresponding
to the AC voltage and current measurements. Second instance of PMU (second data stream) is reporting
16 synchrophasors over IEEE C37.118/1344; that is four 3-phase synchrophasors and 12 single phase
synchrophasors corresponding to the AC voltage and current measurements. The number of
synchrophasor reporting channels on second instance of PMU can be extended to 32 channels per
request. This can be done when ordering the RES670 B20 configuration.
In addition, each data stream includes 16 analog and 16 binary reporting channels over IEEE
C37.118/1344 in the standard configuration. The number of analog and binary reporting channels can be
extended to maximum 24 channels per PMU instance (on each data stream) on request. This can be
done when ordering the RES670 B20 configuration. In the standard B20 configuration the analog
reporting channels are used for reporting P and Q measurements from each bay over IEEE
C37.118/1344.
In addition to the binary reporting channels there are 4 trigger bits (FREQTRIG, DFDTTRIG, OCTRIG,
and UVTRIG) available per PMU instance which are used to report the existing protection function
triggers over IEEE C37.118/1344.
The main functionality of the RES670 is synchrophasor reporting or PMU functionality. In addition, this
configuration also includes general back-up protection functions which are mainly intended for alarm
purposes. Available protection functions in standard B20 configuration are Over Voltage, Under Voltage,
Over Frequency, Under Frequency and Rate of Change of Frequency.
Measuring functions for S, P, Q, I, V, PF, f are available for local presentation on the local HMI and
remote presentation via IEEE C37.118/1344 and/or via IEC 61850. The calibration parameters on the
measurement function allows calibration at site to very high accuracy.
As shown in
Overcurrent protection (OC4PTOC), Under/Over power protection (GUPPDUP, GOPPDOP), etc. which
can be added per request. RES670 B20 function library also includes additional functions which are
available but not configured. Note that RES670 B20 must be reconfigured if any additional functions are
used.
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figure 4, there are optional functions such as ground fault protection (EF4PTOC),
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1MRK511407-UUS Rev. N
Phasor measurement unit RES670
Application manual