ABB RELION 615 Series Applications Manual page 86

Section 3
REG615 standard configurations
80
BLOCK_FREQ
BLOCK_FREQ
BLOCK_FREQ
BLOCK_FREQ
FRPFRQ1_OPERATE
FRPFRQ2_OPERATE
FRPFRQ3_OPERATE
FRPFRQ4_OPERATE
GUID-0E0FBEC6-9ABE-40FB-AFAD-E781D244A22E V2 EN
Figure 90: Frequency protection function
Three instances of reverse power/directional overpower protection DOPPDPR are
provided to detect either loss of prime mover or detecting motoring action or detecting
any abnormal high reactive power being absorbed by the generator.
FRPFRQ1
BLOCK OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
ST_OFRQ
ST_UFRQ
ST_FRG
FRPFRQ2
BLOCK OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
ST_OFRQ
ST_UFRQ
ST_FRG
FRPFRQ3
BLOCK OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
ST_OFRQ
ST_UFRQ
ST_FRG
FRPFRQ4
BLOCK OPERATE
OPR_OFRQ
OPR_UFRQ
OPR_FRG
START
ST_OFRQ
ST_UFRQ
ST_FRG
OR6
B1 O
B2
B3
B4
B5
B6
1MRS758272 B
FRPFRQ1_OPERATE
FRPFRQ1_START
FRPFRQ2_OPERATE
FRPFRQ2_START
FRPFRQ3_OPERATE
FRPFRQ3_START
FRPFRQ4_OPERATE
FRPFRQ4_START
FREQUENCY_OPERATE
REG615
Application Manual