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268 Harmonic studies of power compensating plant
20.0
10.0
Harmonic current distribution factors 2.0 Q A
3.0
Q IA
1.0
0.5
0.2
0.1
0 2 4 6 8 10 12
Harmonic order, n
(a)
20.0
10.0
Harmonic current distribution factors 2.0 Q IB
5.0
1.0
0.5
0.2 Q B
0.1
0 2 4 6 8 10 12
Harmonic order, n
(b)
Fig. 7.2 Harmonic current distribution factors versus harmonic order: (a) capacitor bank with no tuning
reactor; and (b) capacitor bank with tuning reactor.
If a tuning reactor X fl is added to the capacitor to form a series 5th harmonic filter,
and if the resistance of the reactor is considered negligible in comparison with the
system resistance, then at 60 Hz
X fc 10
X fl 0:4
(7:9)
5 2 25
