Description Of Configuration B20 - ABB RES670 Applications Manual

Section 3
Configuration
3.2.1.2
44

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
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
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 4, 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
1MRK 511 407-UEN C
GUID-E8A586F6-E450-4B5E-AF00-1DC9A197A2A6 v4
figure 4.
figure 4, RES670 B20 configuration as
Phasor measurement unit RES670 2.2 IEC
Application manual