| Abstract |
D-STATCOM is an emergent solution for flicker mitigation. Flicker, caused by large fluctuating loads as arc
furnace, is one of the power quality problems that include interruptions, voltage sags and dips, harmonics. The state of
the art technology to reduce flicker is shunt compensation using Static Var Compensator with thyristors. However, this
kind of technology has an intrinsic limited flicker mitigation capability. Voltage Source converters can be used as shunt
compensation device. Complete control of D-STATCOM has been studied and is presented in this paper. However,
costs of such device is high thus hybrid solutions including classical SVC structure associated with D-STATCOM
device is the best solution for power quality improvement at reasonable costs. Such a hybrid solution could be used for
Transmission system. This paper present the benefits of such an association in Transmission system. D-STATCOM
associated with a thyristor SVC has higher effectiveness in power quality improvement and D-STATCOM can improve
the effectiveness of the associated classical SVC. Dynamic damping principles as important part of possibilities brought
by the D-STATCOM are presented in this paper and have been simulated in Matlab/Simulink Software. |
