Application - ABB Relion 670 Series Product Manual

Line distance protection REL670
Version 2.2

2. Application

The Intelligent Electronic Device (IED) is used for the
protection, control and monitoring of overhead lines
and cables in solidly, impedance earthed or isolated
networks. The IED can be used up to the high voltage
levels. It is suitable for the protection of heavily loaded
lines and multi-terminal lines where the requirement for
tripping is one-, two- and/or three-phase. The IED is
also suitable as backup protection of power
transformers, reactors and so on.
With high functional integration capability, the
protection of two overhead lines, one as the main and
another as the backup, can be achieved using a single
IED. When deployed in such applications, this can lead to
overall cost savings including reduced engineering.
Distance protection with quadrilateral or mho
characteristics is available. The full scheme distance
protection provides protection of power lines with high
sensitivity and low requirement on remote end
communication. The six zones have fully independent
measuring and setting which gives high flexibility for all
types of lines. Load encroachment and adaptive reach
compensation are included.
The modern technical solution offers fast operating
time of typically less than one cycle.
The IED also includes an alternative for use on
impedance earthed or isolated networks. It includes
phase preference logic to select and trip only one line at
cross-country faults.
The autorecloser for single-, two-, and/or three-phase
tripping and autoreclosing includes priority features for
multi-breaker arrangements. It co-operates with the
synchrocheck function with high-speed or delayed
reclosing.
A high impedance differential protection can be used to
protect T-feeders or line reactors.
High set instantaneous phase and earth overcurrent,
four step directional or non-directional delayed phase
and earth overcurrent, sensitive earth fault for not
direct earthed systems, thermal overload and two step
under and overvoltage protection are examples of the
available functions allowing the user to fulfill any
application requirement.
The distance phase and earth fault protection, and the
directional earth overcurrent protection can
communicate with remote end in any teleprotection
communication scheme. With the included remote
communication, following the IEEE C37.94 standard, up
to 192 channels for intertrip and binary signals are
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M13636-3 v14
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available per LDCM communication module in the
communication between the IEDs.
The IED can also be provided with full bay control and
interlocking functionality including co-operation with
the synchrocheck function to allow integration of the
main or backup control.
Out of Step function is available to separate power
system sections close to electrical centre at occurring
out of step.
The IED can be used in applications with IEC/UCA
61850-9-2LE process bus with up to eight merging units
(MU) depending on other functionality included in the
IED. Each MU has eight analogue channels, normally four
currents and four voltages. Conventional and Merging
Unit channels can be mixed freely in the application.
Logic is prepared with a graphical tool. The advanced
logic capability allows special applications such as
automatic opening of disconnectors in multi-breaker
arrangements, closing of breaker rings, load transfer
logics and so on. The graphical configuration tool with
delay mode, ensures simple and fast testing and
commissioning.
Disturbance recorder and fault locator are available to
allow independent post-fault analysis after primary
disturbances.
Forcing of binary inputs and outputs is a convenient way
to test wiring in substations as well as testing
configuration logic in the IEDs. Basically it means that all
binary inputs and outputs on the IED I/O modules (BOM,
BIM, IOM & SOM) can be forced to arbitrary values.
Central Account Management is an authentication
infrastructure that offers a secure solution for enforcing
access control to IEDs and other systems within a
substation. This incorporates management of user
accounts, roles and certificates and the distribution of
such, a procedure completely transparent to the user.
Flexible Product Naming allows the customer to use an
IED-vendor independent IEC 61850 model of the IED.
This customer model will be used as the IEC 61850 data
model, but all other aspects of the IED will remain
unchanged (e.g., names on the local HMI and names in
the tools). This offers significant flexibility to adapt the
IED to the customers' system and standard solution.
Communication via optical connections ensures
immunity against disturbances.
Ready to use pre-configured application packages:
1MRK 506 372-BEN M
M11788-3 v11
SEMOD51220-5 v15
Hitachi Power Grids