ABB RED615 ANSI User manual
Relion® 615 series
Line Differential Protection and Control
RED615
Product Guide
Contents
1. Description...........................................................3
2. Standard configurations.......................................3
3. Protection functions.............................................5
4. Application...........................................................7
5. Supported ABB solutions...................................12
6. Control................................................................14
7. Measurement.....................................................14
8. Disturbance recorder..........................................14
9. Event log.............................................................14
10. Recorded data...................................................14
11. Trip-circuit supervision......................................15
12. Self-supervision.................................................15
13. Current circuit supervision................................15
14. Protection communication and
supervision........................................................15
15. Access control...................................................16
16. Inputs and outputs............................................16
17. Station communication.....................................16
18. Technical data...................................................19
19. Display options..................................................44
20. Mounting methods............................................45
21. IED case and IED plug-in unit...........................45
22. Selection and ordering data..............................46
23. Accessories and ordering data.........................48
24. Tools..................................................................49
25. Terminal diagrams.............................................50
26. References........................................................53
27. Functions, codes and symbols.........................53
28. Document revision history.................................56
Disclaimer
The information in this document is subject to change without notice and should not be construed as a commitment by ABB Oy. ABB Oy assumes
no responsibility for any errors that may appear in this document.
© Copyright 2009 ABB Oy.
All rights reserved.
Trademarks
ABB and Relion are registered trademarks of ABB Group. All other brand or product names mentioned in this document may be trademarks or
registered trademarks of their respective holders.
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
2 ABB
1. Description
RED615 is a phase-segregated two-end line
differential protection and control IED
(intelligent electronic device) designed for
utility and industrial power systems,
including looped and meshed distribution
networks with or without decentralized
power generation. RED615 is a member of
ABB’s Relion®family and its 615 protection
and control product series. Re-engineered
from the ground up, the 615 series has been
guided by the IEC 61850 standard for
communication and interoperability of
substation automation equipment.
The IED provides unit type main protection
for overhead lines and cable feeders in
distribution networks. The IED also features
current-based protection functions for remote
back-up for down-stream protection IEDs and
local back-up for the line differential main
protection. Further, standard configurations B
and C also include earth-fault protection.
The IED is adapted for the protection of
overhead line and cable feeders in isolated
neutral, resistance earthed, compensated
(impedance earthed) and solidly earthed
networks. Once the IED has been given the
application-specific settings, it can directly be
put into service.
The 615 series IEDs support a range of
communication protocols including IEC
61850 with GOOSE messaging, IEC
60870-5-103, Modbus®and DNP3.
2. Standard
configurations
The line differential protection and control
IED RED615 is available with three
alternative standard configurations.
Table 1. Standard configurations
Description Std. conf.
Line differential protection A
Line differential protection with directional earth-fault protection B
Line differential protection with non-directional earth-fault protection C
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
Revision: B
ABB 3
Table 2. Supported functions
Functionality A B C
Protection1)
Line differential protection and related measurements, stabilized
and instantaneous stages ●●●
Three-phase non-directional overcurrent, low stage, instance 1 ●●●
Three-phase non-directional overcurrent, high stage, instance 1 ●●●
Three-phase non-directional overcurrent, high stage, instance 2 ●●●
Three-phase non-directional overcurrent, instantaneous stage,
instance 1 ●●●
Non-directional earth-fault protection, low stage (SEF), instance 1 - - ●
Non-directional earth-fault protection, low stage, instance 2 - - ●
Non-directional earth-fault protection, high stage, instance 1 - - ●
Non-directional earth-fault protection, instantaneous stage, instance
1- - ●
Directional earth-fault protection, low stage (SEF), instance 1 - ●-
Directional earth-fault protection, low stage, instance 2 - ●-
Directional earth-fault protection, high stage, instance 1 - ●-
Transient / intermittent earth-fault protection - ●-
Non-directional (cross-country) earth-fault protection, using
calculated I0-●-
Negative sequence overcurrent protection, instance 1 ●●●
Negative sequence overcurrent protection, instance 2 ●●●
Phase discontinuity protection - ● ●
Three-phase thermal protection for feeders, cables and distribution
transformers -● ●
Binary signal transfer ●●●
Circuit-breaker failure protection ●●●
Three-phase inrush current detector ●●●
Master trip, instance 1 ●●●
Master trip, instance 2 ●●●
Control
Circuit-breaker control with interlocking ●●●
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
4 ABB
Table 2. Supported functions, continued
Functionality A B C
Disconnector position indication, instance 1 ●●●
Disconnector position indication, instance 2 ●●●
Disconnector position indication, instance 3 ●●●
Earthing switch indication ●●●
Auto-reclosing - o o
Condition monitoring
Circuit-breaker condition monitoring - ● ●
Trip circuit supervision, instance 1 ●●●
Trip circuit supervision, instance 2 ●●●
Current circuit supervision ●●●
Protection communication supervision ●●●
Measurement
Disturbance recorder ●●●
Three-phase current measurement ●●●
Sequence current measurement ●●●
Residual current measurement - ● ●
Residual voltage measurement - ●-
●= included, o = optional at the time of order
1) Note that all directional protection functions can also be used in non-directional mode.
3. Protection functions
The IED offers two-stage phase-segregated
line differential protection, phase overcurrent
protection, negative phase-sequence
overcurrent protection and circuit-breaker
failure protection. Depending on the standard
configuration chosen, the basic functionality
can be extended by thermal overload
protection, directional or non-directional
earth-fault protection, sensitive earth-fault
protection, phase discontinuity protection,
transient/intermittent earth-fault protection
and three-pole multi-shot auto-reclose
functions for overhead line feeders.
The line differential protection function
includes a stabilized low stage and an
instantaneous high stage. The stabilized low
stage provides sensitive differential
protection and remains stable during, for
example, current transformer saturation
conditions. The low-stage operation can be
restrained using second harmonic detection if
an out-of-zone power transformer is to be
energized. The instantaneous high stage
offers less sensitive differential protection but
enables fast operation during high fault
currents.
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
ABB 5
The operating time characteristic for the low
stage can be set to definite time or inverse
definite time mode. The direct inter-trip
function ensures that both ends are always
simultaneously tripped, independent of the
fault current contribution.
GUID-B8CBF357-474F-4F61-BE28-D107515A09AA V2 EN
Figure 1. Protection function overview of standard configuration A
GUID-81A76312-4CC1-4AE8-A0A3-14C9800EE0E2 V1 EN
Figure 2. Protection function overview of standard configuration B
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
6 ABB
GUID-4F4A066F-28C1-40FB-B3A6-B2CC3119E587 V1 EN
Figure 3. Protection function overview of standard configuration C
4. Application
RED615 can be used in a variety of
applications requiring an absolutely selective
unit type protection system. The zone-of-
protection of a line differential protection
system is the feeder section defined by the
location of the current transformers in the
local and the remote substation.
Combining horizontal GOOSE
communication over a station bus and binary
signal transfer over the protection
communication link offers new application
possibilities beyond traditional line
differential protection. One interesting
application based on inter-substation signal
transfer is loss-of-mains (LOM) protection in
networks with distributed generation. The
performance of the combination of binary
signal transfer and horizontal GOOSE
communication performance as to speed,
selectivity and reliability are hard to match
with conventional loss-of-mains protection.
RED615 is the ideal IED for the protection of
feeders in network configurations containing
closed loops. Under normal operating
conditions the feeder loop is closed. The aim
of the closed loop is to secure the availability
of power for the end users. As a result of the
closed loop configuration, any fault spot in
the system will be fed with fault current from
two directions. Using plain overcurrent
protection, either directional or non-
directional, it is difficult to obtain fast and
selective short circuit protection. With
RED615 line differential protection IEDs the
faulty part of the network can be selectively
isolated, thus securing power distribution to
the healthy part of the network.
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
ABB 7
GUID-D4440C4D-6C02-4A37-A38B-1AEDCA9246FC V1 EN
Figure 4. Closed loop network configuration with RED615 line differential protection and
control IEDs
Under certain operational circumstances,
such as maintenance of primary equipment
or substation extension projects there will be
a need for interconnecting network parts,
which normally are separated. To avoid
major re-parameterization of the protection
devices of the network when the network
topology is changed, line differential
protection IEDs can be used to obtain
absolutely selective feeder protection in
looped networks.
GUID-245166BA-1052-4EDC-8C2D-9C968FA05C66 V1 EN
Figure 5. RED615 protecting an interconnecting feeder between two primary distribution
substations
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
8 ABB
GUID-9DC3BAB9-9FA4-4A6D-83C4-E1A7FCE811B0 V1 EN
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
ABB 9
Figure 6. Line differential protection of an overhead line feeder using RED615 with the
standard configuration B. Selectivity of earth-fault protection is ensured using
binary signal transfer (BST) between the directional E/F protection stages of the local
and remote end. The lowest directional E/F stages are not used for tripping purposes,
but set to detect earth-faults in the reverse direction. Upon detection of an out-of-zone
earth-fault, a blocking signal is sent to the remote end directional E/F protection
stage preventing tripping of the circuit breaker. If the earth-fault is within the
protected zone, no blocking signal will be issued, and the internal fault is cleared by
the tripping stages of the directional E/F protection. To ensure simultaneous tripping
of the local and remote end circuit breakers, BST is also used for sending an intertrip
signal to the remote end during earth-fault situations within the protected zone.
Line Differential Protection and Control 1MRS756500 B
RED615
Product version: 2.0 Issued: 03.07.2009
10 ABB
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