Hitachi Relion 670 Series Product Manual page 8

Phasor measurement unit RES670
Version 2.2
accounts, roles and certificates and the distribution of such,
a procedure completely transparent to the user.
The Flexible Product Naming allows the customer to use an
IED-vendor independent IEC 61850 model of the IED. This
customer model will be exposed in all IEC 61850
communication, but all other aspects of the IED will remain
unchanged (e.g., names on the local HMI and names in the
tools). This offers significant flexibility to adapt the IED to
the customers' system and standard solution.
Description of configuration A20
The configuration of the IED is shown in
RES670 A20 configuration is applicable for a typical single
busbar single breaker arrangement monitoring up to three
bays. RES670 A20 is delivered in 1/2, 3/4 and full (1/1)19"
rack casing. For this application 12 analog inputs are used,
thus only one transformer module (TRM) with 12 analog
inputs (9I+3U) is available in A20 standard configuration. As
shown in figure 2, RES670 A20 configuration as a PMU is
measuring one 3-phase voltage of the busbar and three 3-
phase currents of bays 1 to 3. There are two instances of
PMU reporting functionality available in A20 configuration,
meaning two independent IEEE C37.118/1344 data
streams. In the standard A20 configuration, each instance
of PMU, in addition to frequency-deviation and rate-of-
change-of-frequency data, is reporting 16 synchrophasors
over IEEE C37.118/1344; that is four 3-phase
synchrophasors and 12 single phase synchrophasors in
each data stream corresponding to the AC voltage and
current measurements.
In addition, each data stream includes 8 analog and 8
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 A20
8
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figure 2.
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configuration. In the standard A20 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 A20 configuration are Overvoltage,
Undervoltage, Overfrequency, Underfrequency and Rate-of-
change frequency.
Measuring functions for S, P, Q, I, U, 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 figure 2, there are optional functions such as
Earth fault protection (EF4PTOC), Overcurrent protection
(OC4PTOC), Under/Over power protection (GUPPDUP,
GOPPDOP), etc. which can be added per request. RES670
A20 function library also includes additional functions, which
are available but not configured. Note that RES670 A20
must be reconfigured if any additional functions are used.
As shown in figure 2, there are optional functions such as
ground fault protection (EF4PTOC), Overcurrent protection
(OC4PTOC), Under/Over power protection (GUPPDUP,
GOPPDOP), etc. which can be added per request. RES670
A20 function library also includes additional functions, which
are available but not configured. Note that RES670 A20
must be reconfigured if any additional functions are used.
1MRK 511 410-BEN P
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