MI 2892 Power Master
Theory and internal operation
152
Se
(effective apparent
power)
Se
fund
(effective fundamental
apparent power)
Se
N
(effective non fundamental
apparent power)
P
+
fund
(positive sequence of
fundamental active power)
Q
+
fund
(positive sequence of
fundamental reactive power)
De
I
(effective
current distortion power)
De
V
(effective voltage distortion power)
Se
H
(
effective harmonic apparent power)
P
H
(effective active harmonic power)
D
H
(effective harmonic distortion power)
S
+
fund
(positive sequence of
fundamental apparent power)
Su
(unbalanced fundamental
apparent power)
Figure 5.3: IEEE 1459 phase power measurement organisation (totals)
Table 5.2: Power summary and grouping of the total power quantities
Quantity
Combined
powers
Fundamental
powers
Nonfundamental
Powers
Apparent (VA)
Se
Se
fund
, S
+
, Su
Se
N
, Se
H
Active (W)
P
P
+
tot
P
H
Nonactive/reactive (var)
N
Q
+
tot
De
I
, De
V
, De
H
Line utilization
PF
ind/cap
DPF
+
tot ind/cap
-
Harmonic pollution (%)
-
-
Se
N
/S
fund
Combined phase power measurements
Standard compliance: IEEE STD 1459-2010
All combined (funda nonfundamental) active power measurements represent RMS values of
the samples of instantaneous power over a 10/12-cycle time interval. Each 10/12-cycle interval is
contiguous and non-overlapping.
Combined phase active power:
N
j
j
p
j
p
N
j
j
p
p
I
U
N
p
N
P
1
1
1
1
[W], p: 1,2,3
(7)
Combined apparent and nonactive power, and power factor are calculated according to the following
equations:
Combined phase apparent power:
p
p
p
I
U
S
[VA], p: 1,2,3
(8)
Combined phase nonactive power:
(9)
