8.12.6
Monitored data
PID-3710-MONITOREDDATA v4
Table 289: GOPPDOP (32) Monitored data
Name
Type
Values (Range)
Unit
Description
P
REAL
-
MW
Active power P in MW
PPERCENT
REAL
-
%
Active power P in % of SBase
Q
REAL
-
MVAr
Reactive power Q in MVAr
QPERCENT
REAL
-
%
Reactive power Q in % of SBase
8.12.7
Operation principle
SEMOD172154-4 v3
A simplified scheme showing the principle of the power protection function is shown in figure
.
The function has two stages with individual settings.
ANSI06000567-2-en.vsd
Chosen current
phasors
Chosen voltage
phasors
Complex
power
calculation
P
Derivation of
S(composant)
in Char angle
S(angle)
S(angle) >
Power1
t
TRIP1
PICKUP1
Q
P = POWRE
Q = POWIM
S(angle) >
Power2
t
TRIP2
PICKUP2
ANSI06000567 V2 EN-US
Figure 294: Simplified logic diagram of the power protection function
The function will use voltage and current phasors calculated in the pre-processing blocks. The
apparent complex power is calculated according to chosen formula as shown in table
.
Section 8
1MRK 502 066-UUS B
Current protection
554
Technical manual
Содержание Relion 670 series
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