Application - ABB RELION 630 Series Technical Manual

Section 3
Basic functions
3.18.3
110

Application

The IEC 61850-8-1 communication protocol allows vertical communication to HSI
clients. It allows horizontal communication between two or more IEDs from one or
several vendors to exchange information, and to use it in the performance of their
functions and for correct co-operation.
GOOSE, which is part of the IEC 61850–8–1 standard, allows the IEDs to
communicate state and control information amongst themselves, using a publish-
subscribe mechanism. When detecting an event, the IED(s) use a multi-cast
transmission to notify the devices that have registered to receive the data. An IED can
report its status by publishing a GOOSE message. It can also request a control action
to be directed at any device in the network.
The analog output data from the load shedding function block, such as sheddable load
and load mismatch, is connected to the A4ARDR function block for recording the
changes in the output data over a specified period of time. This recording is initaiated
by a binary trigger connected to one of the BXRBDR components. A pre-trigger time
(max. value = 3 s) and a post-trigger time (max value = 10 s) can be configured, and
the changes during the configured time period is recorded. These changes can be
viewed using the Disturbance Recording Viewing tool. Apart from generating the
disturbance records, BXRBDR can be used for creating process events and for
configuring the start and trip LED on the LHMI overlay. Binary output from the load
shedding function block can be connected to the BxRBDR block to generate the
process events.
IEC 61850–8–1 specifies only the interface to the substation LAN. The LAN itself is
left to the system integrator.
1MRS757256 F
PML630/Compact Load-Shedding Solution
Technical Manual