Setting Parameters; Denial Of Service Dos; Application; Setting Guidelines - ABB RET670 Applications Manual

1MRK504116-UUS C
3.4.14.2
3.4.15
3.4.15.1
3.4.15.2
3.5
3.5.1
Application manual

Setting parameters

The function does not have any parameters available in the local HMI or PCM600.

Denial of service DOS

Application

The denial of service functions (DOSFRNT, DOSOEMAB and DOSOEMCD) are
designed to limit the CPU load that can be produced by Ethernet network traffic on the
IED. 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.
DOSFRNT, DOSOEMAB and DOSOEMCD measures the IED load from
communication and, if necessary, limit it for not jeopardizing the IEDs control and
protection functionality due to high CPU load. The function has the following outputs:
• LINKUP indicates the Ethernet link status
• WARNING indicates that communication (frame rate) is higher than normal
• ALARM indicates that the IED limits communication

Setting guidelines

The function does not have any parameters available in the local HMI or PCM600.

Differential protection

Transformer differential protection T2WPDIF (87T) and
T3WPDIF (87T)
Section 3
IED application
97