ABB Relion RES670 Product Manual page 6

Phasor measurement unit RES670 2.1 IEC
Description of configuration B20
The configuration of the IED is shown in
RES670 B20 configuration is applicable for a typical
double busbar single breaker arrangement monitoring
up to six bays. RES670 B20 is delivered in ¾, and full
(1/1)19" rack casing. For this application 24 analog
inputs are used, thus two transformer modules (TRM)
with 12 analog inputs (9I+3U) per TRM are available in
B20 standard configuration. As shown in
RES670 B20 configuration as a PMU is measuring two 3-
phase voltages of the busbars and six 3-phase currents
of bays 1 to 6. There are two instances of PMU reporting
functionality available in B20 configuration, meaning
two independent IEEE C37.118/1344 data streams. Each
instance of PMU is reporting 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
6
GUID-E8A586F6-E450-4B5E-AF00-1DC9A197A2A6 v3
figure 3.
figure 3,
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, 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 3, there are optional functions such
as Earth fault protection (EF4 PTOC), Overcurrent
protection (OC4 PTOC), 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.
1MRK 511 367-BEN D
ABB