ABB RELION REB670, Руководство по применению

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ANSI06000088 V1 EN-US
Figure 56: Example of two single busbar sections with bus-section circuit breaker
and eight feeder bays per each busbar section
This type of busbar arrangement can be quite easily protected. The most common
setups for this type of station are described in the following table.
Table 16: Typical solutions for single busbar arrangements with bus-section breaker
Version of REB670 IED Total number of feeders
in both busbar sections
Number of REB670 IEDs
required for the scheme
3PH; 2-zones, 4-bays BBP (A20)
3*
)
/6
1/2
3PH; 2-zones, 8-bays BBP (A31)
7*
)
/14
1/2
1Ph; 2-zones, 12-bays BBP (B20)
11*
)
/22
3/6
1Ph; 2-zones, 12-bays BBP (B21)
11* ) /22
3/6
1Ph; 2-zones, 24-bays BBP (B31)
23*
)
/46
3/6
*
)
with just one CT input from bus-section bay
Please note that Table 16 is given for the preconfigured versions of REB670 which do
not contain any VT inputs.
For station with just one CT in the bus-section bay, it might be required, depending on
the client requirements, to provide the special scheme for disconnection of bus-section
CT when the bus-section CB is open. For more information, refer to Figure
48 .
6.1.4.5 H-type busbar arrangements
M6644-3 v5
The H-type stations are often used in transmission and sub-transmission networks as
load-centre substations, as shown in Figure
57 . These arrangements are very similar to
the single busbar station with sectionalizer or bus-section breaker, but are characterized
by very limited number of feeder bays connected to the station (normally only two
OHL and two transformers).
1MRK 505 370-UUS A
Section 6
Differential protection
Busbar protection REB670 2.2 ANSI 139
Application manual