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can be used for load-side voltage regulation. For substations
with two or more power transformers operating in parallel, three
alternative voltage regulation principles are available, that is,
the master/follower principle, the negative reactance principle
(NRP) and the minimizing circulating current (MCC) principle.
REU615
Std. conf.
ANSI
IEC
25
47O-/59
47U+/27
50L/50NL
4)
59G
81
81LSH
SYNC
U2>/3U>
U1</3U<
ARC
4)
Uo>
f</f>,
df/dt
UFLS/R
A
3U
Uo
4)
Light detection only
REF615
Std. conf.
ANSI
IEC
49F
50L/50NL
50P/51P
51BF/51NBF
51P/51N
67NIEF
3Ith>F
ARC
3I>>>
3I>/Io>BF
3I/Io
Io>IEF
→
N
Io
3I
3U
Uo
REF615
Std. conf.
ANSI
IEC
25
47O-/59
47U+/27
50L/50NL
50P/51P
51BF/51NBF
67/67N
SYNC
U2>/3U>
U1</3U<
ARC
3I>>>
3I>/Io>BF
3I
→
/Io
→
N
Loadshedding group #2
REF615
Std. conf.
ANSI
IEC
47O-/59
47U+/27
49F
50L/50NL
50P/51P
51BF/51NBF
51P/51N
59G
67NIEF
U2>/3U>
U1</3U<
3Ith>F
ARC
3I>>>
3I>/Io>BF
3I/Io
Uo>
Io>IEF
→
N
3I
Io
3I
Io
3I
Io
3I
Io
REF615
Std. conf.
ANSI
IEC
49F
50L/50NL
50P/51P
51BF/51NBF
51P/51N
67NIEF
3Ith>F
ARC
3I>>>
3I>/Io>BF
3I/Io
Io>IEF
→
N
REF615
Std. conf.
ANSI
IEC
49F
50L/50NL
50P/51P
51BF/51NBF
51P/51N
67NIEF
3Ith>F
ARC
3I>>>
3I>/Io>BF
3I/Io
Io>IEF
→
N
REF615
Std. conf.
ANSI
IEC
49F
50L/50NL
50P/51P
51BF/51NBF
51P/51N
67NIEF
3Ith>F
ARC
3I>>>
3I>/Io>BF
3I/Io
Io>IEF
→
N
Loadshedding group #1
Loadshedding group #3
Io
3I
3U
GUID-CA7B4D3E-1269-450F-A061-5A404FF52455 V3 EN
Figure 3.
Busbar protection and supervision using REU615 with the standard configuration A
Busbar protection and supervision using REU615 with the
standard configuration A is illustrated in
Figure 3
. The arc
protection schemes of REU615 and REF615 are employed for
the busbar protection of the voltage measurement bay and
related parts of the busbar. Apart from the busbar protection
and supervision, REU615 is utilized for centralized load-
shedding (disconnection) and restoration (reconnection) of one
of the outgoing feeders. The synchrocheck and energizing
check functions incorporated in REU615 are employed for
ensuring a safe connection of the outgoing feeder, including
distributed generation, to the network.
Voltage Protection and Control
1MRS757058 K
REU615
Product version: 5.0 FP1
8
ABB
Содержание Relion 615 series
Страница 1: ...RELION 615 SERIES Voltage Protection and Control REU615 Product Guide...
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