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IA
IB
IC
a
b
a<b
a
b
a<b
a
b
a<b
IDLDPU
VA
VB
VC
a
b
a<b
a
b
a<b
a
b
a<b
VDLDPU
OR
AND
AND
AND
AND
AND
AND
AND
AllCurrLow
DeadLineDet1Ph
DLD3PH
DLD1PH
intBlock
Dead Line Detection
ANSI0000035-1-en.vsd
ANSI0000035 V1 EN-US
Figure 133:
Simplified logic diagram for Dead Line detection part
13.2.7.4
Main logic
GUID-D474A49E-D3A8-438C-B7E4-E527FEC2F335 v6
A simplified diagram for the functionality is found in figure
supervision function (FUFSPVC) can be switched on or off by the setting parameter
Operation
to
Enabled
or
Disabled
.
For increased flexibility and adaptation to system requirements an operation mode
selector,
OpModeSel
, has been introduced to make it possible to select different
operating modes for the negative and zero sequence based algorithms. The different
operation modes are:
•
Disabled
. The negative and zero sequence function is disabled.
•
V2I2
. Negative sequence is selected.
•
V0I0
. Zero sequence is selected.
•
V0I0 OR V2I2
. Both negative and zero sequence are activated and work in parallel
in an OR-condition.
•
V0I0 AND V2I2
. Both negative and zero sequence are activated and work in series
(AND-condition for operation).
•
OptimZsNs
. Optimum of negative and zero sequence current (the function that has
the highest magnitude of measured negative and zero sequence current will be
activated).
1MRK 511 408-UUS A
Section 13
Secondary system supervision
Phasor measurement unit RES670 2.2 ANSI
377
Technical manual
Содержание Relion RES670
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