FACTS technology - Wind Power Integration: Connection and System Operational Aspects - page 270

V pu

Transient
rating

1.0

Transient
rating

0.9

0.8

0.7
0.6

0.5

0.4
0.3

0.2

0.1

I C max I L max

Figure A.7 STATCOM operating chart

the output voltage wave. The advantage of this device is that it can maintain con-
stant reactive power output down to about 0.2 pu system voltage, after which it falls
off proportionally to 0 at zero voltage (see Figure A.7). It has transient capability in
both the capacitive and inductive quadrants. Being based on voltage source con-
verter technology, the device can also act as an active harmonic filter.