standard 95% stator earth-fault protection based on the
neutral point fundamental frequency displacement voltage.
The 100% stator earth fault protection requires the injection
unit REX060 and optional shunt resistor unit REX062 for
correct operation.
Underimpedance protection for generators and transformers
ZGVPDIS
GUID-5D0E6F04-8B60-4F12-8DA6-7043BE09A3CC v5
The under impedance protection is a three zone full scheme
impedance protection using offset mho characteristics for
detecting faults in the generator, generator-transformer and
transmission system. The three zones have fully independent
measuring loops and settings. The functionality also
comprises an under voltage seal-in feature to ensure issuing
of a trip even if the current transformer goes into saturation
and, in addition, the positive-sequence-based load
encroachment feature for the second and the third
impedance zone. Built-in compensation for the step-up
transformer vector group connection is available.
5. Wide area measurement system
Synchrophasor report, 16 phasors
GUID-7539462D-A3D6-492D-9926-E67C5B7C72D9 v1
Conguration parameters for IEEE1344 and C37.118 protocol
PMUCONF
GUID-33694C62-A109-4D8F-9063-CEFA5D0E78BC v4
The IED supports the following IEEE synchrophasor
standards:
• IEEE 1344-1995 (Both measurements and data
communication)
• IEEE Std C37.118-2005 (Both measurements and data
communication)
• IEEE Std C37.118.1–2011 and C37.118.1a-2014
(Measurements)
• IEEE Std C37.118.2-2011 (Data communication)
PMUCONF contains the PMU configuration parameters for
both IEEE C37.118 and IEEE 1344 protocols. This means all
the required settings and parameters in order to establish and
define a number of TCP and/or UDP connections with one or
more PDC clients (synchrophasor client). This includes port
numbers, TCP/UDP IP addresses, and specific settings for
IEEE C37.118 as well as IEEE 1344 protocols.
Protocol reporting via IEEE 1344 and C37.118 PMUREPORT
GUID-8DF29209-252A-4E51-9F4A-B14B669E71AB v4
The phasor measurement reporting block moves the phasor
calculations into an IEEE C37.118 and/or IEEE 1344
synchrophasor frame format. The PMUREPORT block
contains parameters for PMU performance class and
reporting rate, the IDCODE and Global PMU ID, format of the
data streamed through the protocol, the type of reported
synchrophasors, as well as settings for reporting analog and
digital signals.
The message generated by the PMUREPORT function block
is set in accordance with the IEEE C37.118 and/or IEEE 1344
standards.
There are settings for Phasor type (positive sequence,
negative sequence or zero sequence in case of 3-phase
phasor and L1, L2 or L3 in case of single phase phasor),
PMU's Service class (Protection or Measurement), Phasor
representation (polar or rectangular) and the data types for
phasor data, analog data and frequency data.
Synchrophasor data can be reported to up to 8 clients over
TCP and/or 6 UDP group clients for multicast or unicast
transmission of phasor data from the IED. More information
regarding synchrophasor communication structure and
TCP/UDP configuration is available in Application Manual
under section C37.118 Phasor Measurement Data Streaming
Protocol Configuration.
Multiple PMU functionality can be configured in the IED,
which can stream out same or different data at different
reporting rates or different performance (service) classes.
6. Current protection
Instantaneous phase overcurrent protection PHPIOC
M12910-3 v13
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.
Directional phase overcurrent protection, four steps
OC4PTOC
M12846-3 v17
Directional phase overcurrent protection, four steps
(OC4PTOC) has an inverse or definite time delay for each
step.
All IEC and ANSI inverse time characteristics are available
together with an optional user defined time characteristic.
The directional function needs voltage as it is voltage
polarized with memory. The function can be set to be
directional or non-directional independently for each of the
steps.
A second harmonic blocking level can be set for the function
and can be used to block each step individually.
Instantaneous residual overcurrent protection EFPIOC
M12701-3 v16
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 is configured to
measure the residual current from the three-phase current
inputs and can be configured to measure the current from a
separate current input.
1MRK 502 074-BEN A
Generator protection REG670 2.2 and Injection equipment REX060,
REX061, REX062
Product version: 2.2.1
24 ABB
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