ABB REG670 Applications Manual

SMAI1
BLOCK
DFTSPFC
REVROT
^GRP1L1
^GRP1L2
^GRP1L3
^GRP1N
SPFCOUT
G1AI3P
G1AI1
G1AI2
G1AI4
G1N
NEUTRAL
PHASEL3
PHASEL2
PHASEL1
UL1L2
SAPTOF
U3P*
BLOCK
BLKTRIP
TRIP
START
BLKDMAGN
FREQ
TRM _40.CH7(U)
SAPTOF(1)_TRIP
EC10000060-3-en.vsd x
IEC10000060 V3 EN
Figure 342: Connection example
The above described scenario does not work if SMAI setting
ConnectionType is Ph-N. If only one phase-earth voltage is available,
the same type of connection can be used but the SMAI
ConnectionType setting must still be Ph-Ph and this has to be
accounted for when setting MinValFreqMeas. If SMAI setting
ConnectionType is Ph-N and the same voltage is connected to all three
SMAI inputs, the positive sequence voltage will be zero and the
frequency functions will not work properly.
The outputs from the above configured SMAI block shall only be used
for Overfrequency protection (SAPTOF), Underfrequency protection
(SAPTUF) and Rate-of-change frequency protection (SAPFRC) due
to that all other information except frequency and positive sequence
voltage might be wrongly calculated.
The same phase-phase voltage connection principle shall be used for frequency
tracking master SMAI block in pump-storage power plant applications when
swapping of positive and negative sequence voltages happens during generator/motor
mode of operation.
23.11.3 Setting guidelines
The parameters for the signal matrix for analog inputs (SMAI) functions are set via the
local HMI or PCM600.
Every SMAI function block can receive four analog signals (three phases and one
neutral value), either voltage or current. SMAI outputs give information about every
aspect of the 3ph analog signals acquired (phase angle, RMS value, frequency and
frequency derivates, and so on – 244 values in total). Besides the block “group name”,
the analog inputs type (voltage or current) and the analog input names that can be set
directly in ACT.
Section 23 1MRK 502 071-UEN -
Basic IED functions
730 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual

ABB REG670 Specifications

General

Brand	ABB
Model	REG670
Category	Protection Device
Language	English