ABB RELION 615 Series Applications Manual page 55

1MRS758272 B
REG615
Application Manual
FRPFRQ1(f>/f<,d
BLOCK OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
ST_OFRQ
ST_UFRQ
ST_FRG
FRPFRQ2(f>/f<,d
BLOCK OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
ST_OFRQ
ST_UFRQ
ST_FRG
FRPFRQ1_OPERATE
FRPFRQ2_OPERATE
FRPFRQ3_OPERATE
FRPFRQ4_OPERATE
GUID-D34314B5-60E3-4B60-87A5-B17D5CF804E5 V2 EN
Figure 29: Frequency protection function
Two instances of directional overpower protection are provided for indicating
overload on the system, which can be used for protecting the transformer from
delivering excessive load or to indicate that a customer is supplying power into the
grid.
DOPPDPR1_OPERATE
DOPPDPR2_OPERATE
GUID-384AD154-69B3-4557-A498-00C35D85E1FD V2 EN
Figure 30: Directional overpower protection function
Configuration includes interconnection protection functions directional reactive
power undervoltage protection DQPTUV1, voltage vector shift protection
VVSPPAM1 and three stages of low-voltage ride-through protection LVRTPTUV.
These functions can be used in the common point of coupling, depending on the
selected setting to disconnect the distributed power generation to support utility grid
stability and to detect islanding. They can also be used to disconnect the distributed
generator from common point of coupling. A failure in the voltage measuring circuit
detected by the fuse failure function is used to block LVRTPTUV and DQPTUV1
protection functions.
REG615 standard configurations
FRPFRQ3(f>/f<,d
BLOCK
FRPFRQ1_OPERATE
FRPFRQ1_START
FRPFRQ4(f>/f<,d
BLOCK
FRPFRQ2_OPERATE
FRPFRQ2_START
OR6
B1 O
B2
B3
B4
B5
B6
DOPPDPR1(P>/Q>(
BLOCK OPERATE
START
DOPPDPR2(P>/Q>(
BLOCK OPERATE
START
OR
B1 O
B2
Section 3
OPERATE
FRPFRQ3_OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
FRPFRQ3_START
ST_OFRQ
ST_UFRQ
ST_FRG
OPERATE
FRPFRQ4_OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
FRPFRQ4_START
ST_OFRQ
ST_UFRQ
ST_FRG
FREQUENCY_OPERATE
DOPPDPR1_OPERATE
DOPPDPR1_START
DOPPDPR2_OPERATE
DOPPDPR2_START
DOPPDPR_OPERATE
49