Main Protection Functions - ABB REB670 Applications Manual

Section 2
Application
2.2
34
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.
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.

Main protection functions

Table 2: Example of quantities
2 = number of basic instances
0-3 = option quantities
3-A03 = optional function included in packages A03 (refer to ordering details)
1MRK 505 337-UUS -
Application manual