Application - ABB RELION REX640 Technical Manual

1MRS759142 C
9.2.5
REX640
Technical Manual
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GUID-EC67D237-146C-4484-9BEC-663F95C36093 V1 EN
Figure 731: Control procedure in the SBO method

Application

In the field of distribution and sub-transmission, automatic, reliable control and status
indication of primary switching components, both locally and remotely, are of
significant importance. They are needed especially in modern remotely controlled
substations.
P3SXSWI is designed to be used for the control of two- (open, closed) and three-state
(earthing switch closed, disconnector closed and both open) switches. The function
also handles user-defined interlocking logics and provides commands.
Control and status indication facilities are implemented in the same package with
P3SXSWI. When primary components are controlled in the energizing phase, for
example, the correct execution sequence of the control command 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 IEC 61850 GOOSE
message between feeders.
1. Send reservation to other terminals
2. Receive response
Section 9
Control functions
1373