ABB Relion 611 Series, Technical Manual

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GUID-9947B4F2-CD26-4F85-BF57-EAF1593AAE1B V1 EN
Figure 174: Complex power and power quadrants
Table 400: Power quadrants
Quadrant Current P Q PF Power
Q1 Lagging + + 0…+1.00 +ind
Q2 Lagging - + 0…-1.00 -cap
Q3 Leading - - 0…-1.00 -ind
Q4 Leading + - 0…+1.00 +cap
The active power P direction can be selected between forward and reverse with Active
power Dir and correspondingly the reactive power Q direction can be selected with
Reactive power Dir . This affects also the accumulated energy directions.
The accumulated energy is calculated separately as forward active (
EA_FWD_ACM
),
reverse active (
EA_RV_ACM
), forward reactive (
ER_FWD_ACM
) and reverse reactive
(
ER_RV_ACM
). Depending on the value of the unit multiplier selected with Energy
unit Mult , the calculated power values are presented in units of kWh/kVArh or in units
of MWh/MVArh.
When the energy counter reaches its defined maximum value, the counter value is
reset and restarted from zero. Changing the value of the
Energy unit Mult setting resets
the accumulated energy values to the initial values, that is,
EA_FWD_ACM
to Forward
Wh Initial ,
EA_RV_ACM
to Reverse Wh Initial ,
ER_FWD_ACM
to Forward VArh
Initial and
ER_RV_ACM
to Reverse VArh Initial . It is also possible to reset the
accumulated energy to initial values through a parameter or with the
RSTACM
input.
Section 7
1MRS757454 D
Measurement functions
358 611 series
Technical Manual