Main Protection Functions - ABB RELION 670 Series Applications Manual

1MRK 505 337-UUS A
Optionally available circuit breaker failure protection, one for every CT input into the IED, offers
secure local back-up protection for the circuit breakers in the station.
Optionally available four-stage, non-directional overcurrent protections, one for every CT input
into the IED, provide remote backup functionality for connected feeders and remote-end stations.
Optionally available voltage and frequency protection functions enable to include voltage release
criterion for busbar protection or to integrate independent over-, under-voltage protection for the
bus in the busbar protection IED.
Optionally available over-current, thermal overload and capacitor bank protection functions open
possibilities to integrate protection of shunt reactors and shunt capacitor banks into the busbar
protection IED.
It is normal practice to have just one busbar protection IED per busbar. Nevertheless some utilities
do apply two independent busbar protection IEDs per zone of protection. This IED fits both
solutions.
A simplified bus differential protection for multi-phase faults and ground faults can be obtained
by using a single, one-phase IED with external auxiliary summation current transformers.
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.
The Flexible Product Naming allows the customer to use an IED-vendor independent 61850 model
of the IED. This customer model will be exposed in all IEC 61850 communication, 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
Optional apparatus control for up to 30 objects can provide a facility to draw simplified single line
diagram (SLD) of the station on the local HMI.
2.2

Main protection functions

Table 2:
2
0-3
3-A03
Application manual
Note that customized REB670 is delivered without any configuration. Thus the
complete IED engineering shall be done by the customer or its system integrator.
In order to secure proper operation of the busbar protection it is strictly
recommended to always start engineering work from the PCM600 project for the
pre-configured REB670 which is the closest to the actual application. Then,
necessary modifications shall be applied in order to adopt the customized IED
configuration to suite the actual station layout. The PCM600 project for the pre-
configured REB670 IEDs is available in the Connectivity Package DVD.
Example of quantities
= number of basic instances
= option quantities
= optional function included in packages A03 (refer to ordering details)
Section 2
Application
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