ABB REG670 - Monitored Data

8.11.6 Monitored data
Table 226: GOPPDOP 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
8.11.7 Operation principle
A simplified scheme showing the principle of the power protection function is shown
in figure 199. The function has two stages with individual settings.
IEC06000567-2-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
START1
Q
P = POWRE
Q = POWIM
S(angle) >
Power2
t TRIP2
START2
IEC06000567 V2 EN
Figure 199: 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 227.
1MRK502052-UEN B Section 8
Current protection
431
Technical manual