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IEC 61850 generic communication
I/O functions DPGGIO
The IEC 61850 generic communication I/O
functions (DPGGIO) function block is used to
send double indications to other systems or
equipment in the substation. It is especially
used in the interlocking and reservation
station-wide logics.
Single point generic control 8
signals SPC8GGIO
The Single point generic control 8 signals
(SPC8GGIO) function block is a collection of
8 single point commands, designed to bring
in commands from REMOTE (SCADA) to
those parts of the logic configuration that do
not need extensive command receiving
functionality (for example, SCSWI). In this
way, simple commands can be sent directly
to the IED outputs, without confirmation.
Confirmation (status) of the result of the
commands is supposed to be achieved by
other means, such as binary inputs and
SPGGIO function blocks. The commands can
be pulsed or steady.
AutomationBits AUTOBITS
The Automation bits function (AUTOBITS) is
used to configure the DNP3 protocol
command handling.
5. Current protection
Instantaneous phase overcurrent
protection PHPIOC
The instantaneous three phase overcurrent
function has a low transient overreach and
short tripping time to allow use as a high set
short-circuit protection function.
Four step phase overcurrent
protection OC4PTOC
The four step phase overcurrent protection
function OC4PTOC has an inverse or definite
time delay independent for step 1 and 4
separately. Step 2 and 3 are always definite
time delayed.
All IEC and ANSI time delayed characteristics
are available.
The directional function is voltage polarized
with memory. The function can be set to be
directional or non-directional independently
for each of the steps.
Instantaneous residual overcurrent
protection EFPIOC
The Instantaneous residual overcurrent
protection EFPIOC has a low transient
overreach and short tripping times to allow
the use for instantaneous earth-fault
protection, with the reach limited to less than
the typical eighty percent of the line at
minimum source impedance. EFPIOC can be
configured to measure the residual current
from the three-phase current inputs or the
current from a separate current input.
EFPIOC can be blocked by activating the
input BLOCK.
Four step residual overcurrent
protection EF4PTOC
The four step residual overcurrent protection
(EF4PTOC) has a settable inverse or definite
time delay independent for step 1 and 4
separately. Step 2 and 3 are always definite
time delayed.
All IEC and ANSI time delayed characteristics
are available.
The directional function is voltage polarized,
current polarized or dual polarized.
EF4PTOC can be set directional or non-
directional independently for each of the steps.
A second harmonic blocking can be set
individually for each step.
EF4PTOC can be used as main protection for
phase-to-earth faults.
EF4PTOC can also be used to provide a
system back-up for example, in the case of
the primary protection being out of service
due to communication or voltage transformer
circuit failure.
Bay control REC650
1MRK 511 249-BEN -
Product version: 1.1
Issued: February 2011
20
ABB
Summary of Contents for REC650 ANSI
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