ABB RELION 650 SERIES, Technical Manual

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Binary input Function
1 Activated
0 Deactivated
18.7 Denial of service DOS
18.7.1 Functionality
GUID-407250CA-0076-41E1-AD2D-434077AC3F1D v5
The Denial of service functionality limits overload on the IED produced by heavy
Ethernet network traffic. The communication facilities must not be allowed to
compromise the primary functionality of the device. All inbound network traffic
will be quota controlled so that too heavy network loads can be controlled. Heavy
network load might for instance be the result of malfunctioning equipment
connected to the network.
18.7.2 Operation principle
GUID-94340D4F-4D32-409B-BA1A-BA49A0C3F297 v5
The denial of service protection is designed to protect the IED from overload when
exposed to high amount of Ethernet network traffic. The communication facilities
must not be allowed to compromise the primary functionality of the device. All
inbound network traffic is quota controlled, so that a too heavy network load can be
controlled. Heavy network load might for instance be the result of malfunctioning
equipment connected to the network.
The denial of service functionality in FRONSTATUS, SCHLCCH and RCHLCCH
measures the IED load from communication and, if necessary, limits it from
jeopardizing the IED's control and protection functionality. The function has the
following outputs:
• RCHLCCH
•
LinkAUp and LinkBUp indicates the Ethernet link status for the rear
ports channel A and B
• DOSLINKA and DOSLINKB indicates that DOS functionality is active
on channel A and channel B
• DOSALARM indicates that DOS functionality is active on the access
point
• SCHLCCH and FRONTSTATUS
•
LINKUP indicates the Ethernet link status
• DOSALARM indicates that DOS functionality is active on the access
point
Section 18
1MRK 506 382-UEN A
Security
792 Line distance protection REL650 2.2 IEC
Technical manual