principle for the use of QCBAY, LOCREM, LOCREMCTRL, SCILO,
SCSWI, SXCBR.
Figure 313 shows from which places the apparatus control function receives
commands. The commands to an apparatus can be initiated from the Control Centre
(CC), the station HMI or the local HMI on the IED front.
Station HMI
GW
cc
Station bus
breakers disconnectors grounding switches
ANSI08000227.vsd
Apparatus
Control
IED
CLOSE/OPEN
Local
HMI
Apparatus
Control
IED
Apparatus
Control
IED
Local
HMI
Local
HMI
CLOSE/OPENCLOSE/OPEN
ANSI08000227 V1 EN-US
Figure 313: Overview of the apparatus control functions
Features in the apparatus control function:
• Operation of primary apparatuses
• Select-Execute principle to give high security
• Selection and reservation function to prevent simultaneous operation
• Selection and supervision of operator place
• Command supervision
• Block/deblock of operation
• Block/deblock of updating of position indications
• Substitution of position indications
• Overriding of interlocking functions
• Overriding of synchronism check
• Pole discrepancy supervision
• Operation counter
• Suppression of mid position
Section 15 1MRK 504 163-UUS A
Control
698 Transformer protection RET670 2.2 ANSI
Application manual
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