Siemens SIPROTEC 6MD665, Manual

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2.2 Command processing
17
6MD665 Manual
C53000-G1876-C103-3
2.2 Command processing
A Control command process is integrated in the SIPROTEC
®
6MD665 to coordinate
the operation of circuit breakers and other equipment in the power system.
Control action can originate from four command sources:
• Local operation using the keypad on the local user interface of the device
• Operation using the DIGSI
®
• Remote operation using a substation automation and control system (e.g. SICAM
®
)
• Automatic functions (e.g., using a binary input)
Switchgear with single and multiple busbars are supported. Command output gener-
ally occurs via the SICAM HV components DBC and SCM, which are connected via
the process bus interface. High security against inadvertent device operations can be
ensured if interlocking checks are enabled. A standard set of optional interlocking
checks is provided for each command issued to circuit breakers/switchgear.
2.2.1 General
The source of command are recorded in the event log at the moment of the command
output.
2.2.1.1 Description
The following source of command are possible:
2.2.2 Control Device
Devices with integrated or detached operator panel can control switchgear via the
operator panel of the device. Commands are issued via the process bus to the SICAM
HV modules DBC (circuit-breakers and SCM, disconnectors, ground switches). In
addition, binary input and output can also be used.
Usecases Switchgears with single and multiple busbars
Cause text Command source
SC = Local Local control using the keypad on the local user interface of the
device
SC = SICAM Local control of central device (e.g. SICAM
®
)
SC = Remote Remote control of central device
SC = Auto Automatic command of central device (e.g. SICAM
®
CFC)
SC = Auto device Automatic command of device
SC = DIGSI Control using DIGSI
®