Current circuit supervision
Fuse failure supervision
Supervision alarm
CCSPVC1
O:15|T:2.5|I:1
BLOCK
FAIL
ALARM
CCSPVC1_ALARM
CCSPVC1_FAIL
OR6
O:17|T:2.5|I:1
B1
B2
B3
B4
B5
B6
O
SEQSPVC1_FUSEF_3PH
SEQSPVC1_FUSEF_U
CCSPVC1_ALARM
SUPERVISION_ALARM
SEQSPVC1
O:16|T:2.5|I:1
BLOCK
CB_CLOSED
DISCON_OPEN
MINCB_OPEN
FUSEF_3PH
FUSEF_U
SEQSPVC1_FUSEF_3PH
SEQSPVC1_FUSEF_U
Figure 19: Current circuit and Fuse failure supervision functions
Three arc detection function stages ARCDSARC1...3 are included as an optional
function. The arc detection offers individual function blocks for three arc sensors
that can be connected to the merging unit. Each arc detection function monitors
the light information from an arc and delivers a signal, if an arc is detected.
The output signals from ARCDSARC1...3 are connected to the disturbance recorder
function block.
ARC detection
ARCDSARC1
O:21|T:2.5|I:1
BLOCK
ARC_FLT_DET
ARCDSARC2
O:19|T:2.5|I:2
BLOCK
ARC_FLT_DET
ARCDSARC3
O:20|T:2.5|I:3
BLOCK
ARC_FLT_DET
ARCDSARC1_ARC_FLT_DET
ARCDSARC2_ARC_FLT_DET
ARCDSARC3_ARC_FLT_DET
Figure 20: Arc detection function
3.3.3.4
Functional diagrams for measurement functions
The phase current inputs to the merging unit are measured by the three-
phase current measurement function CMMXU1. Similarly, the sequence current
measurement CSMSQI1 measures the sequence current and the residual current
measurement RESCMMXU1 measures the residual current.
Merging unit variants
1MRS758580 C
46
SMU615
Application Manual
Содержание Relion SMU615
Страница 1: ...RELION Substation Merging Unit SMU615 Application Manual...
Страница 2: ......