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2.36
Command Processing
A control command process is integrated in the SIPROTEC
operation of circuit breakers and other equipment in the power system.
Control commands can originate from four command sources:
• Local operation using the keypad on the local user interface of the device
• Operation using DIGSI
• Remote operation via network control center or substation controller (e.g. SICAM
• Automatic functions (e.g., using a binary input)
Switchgear with single and multiple busbars are supported. The number of switchgear
devices to be controlled is limited only by the number of binary inputs and outputs
present. High security against inadvertent device operations can be ensured if inter-
locking checks are enabled. A standard set of optional interlocking checks is provided
for each command issued to circuit breakers/switchgear.
2.36.1 Control Device
Switchgear can be controlled via the device operator panel, PC interface and the serial
interface as well as a switchgear control system connection.
Applications
• Switchgear with Single and Double Busbars
Prerequisites
The number of devices to be controlled is limited by the:
binary inputs present
binary outputs present
2.36.1.1 Functional Description
Operation using the
Using the navigation keys
®
SIPROTEC
4
switchgear to be operated selected. After entering a password, a new window is dis-
Device
played where multiple control options (ON, OFF, ABORT) are available using the
and
E
minute, the process is aborted. Cancellation via the E
before the control command is issued or during breaker selection.
If the selected control command is not accepted, because an interlocking condition is
not met, then an error message appears in the display. The message indicates why
the command was not accepted (see also SIPROTEC
message must be acknowledged with Enter before any further control commands can
be issued.
Operation using
Switchgear devices can be controlled via the operator control interface with a PC
®
DIGSI
using the DIGSI
4 System Description (Control of Switchgear).
7UM61 Manual
C53000-G1176-C127-3
®
keys. Then a safety query appears. Only after repeated confirmation using the
key is the command action performed. If this enabling does not occur within one
NTER
®
operating program. The procedure is described in the SIPROTEC
,
,
,
, the control menu can be accessed and the
®
2.36 Command Processing
®
7UM61 to coordinate the
key is possible at any time
SC
4 System Description /1/). This
®
),
®
221
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