Application - ABB RELION REX640 Technical Manual

Section 9
Control functions
9.1.5
1358
Local/Remote operations
The local/remote selection affects the CBXCBR, DCXSWI and ESXSWI.
• Local: the opening and closing via communication is disabled.
• Remote: the opening and closing via LHMI is disabled.
• AU_OPEN and AU_CLOSE inputs function regardless of the local/remote
selection.

Application

In the field of distribution and sub-transmission automation, reliable control and
status indication of primary switching components both locally and remotely is in a
significant role. They are needed especially in modern remotely controlled
substations.
Control and status indication facilities are implemented in the same package with
CBXCBR, DCXSWI and ESXSWI. When primary components are controlled in the
energizing phase, for example, the correct execution sequence of the control
commands must be ensured. This can be achieved, for example, with interlocking
based on the status indication of the related primary components. The interlocking on
the substation level can be applied using the IEC61850 GOOSE messages between
feeders.
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Figure 726: Status indication-based interlocking via the GOOSE messaging
REF 615
Control and interlocking via GOOSE messages
REF 615
1MRS759142 C
REF 615
Technical Manual
REF 615
REX640