C.R. Ozansoy, A. Zayegh, R. Coulter, and A. Kalam (Australia)
Controller design, load flow, MATLAB, STATCOM,ULTC, voltage regulation.
Modern power systems, which have several generating
plants and an extremely high number of customers, employ
a variety of transmission and distribution voltages. They
have a number of interconnection and distribution points
through which the electric energy is transmitted or delivered.
At any point where a range of voltage level is required,
transformer or/and static compensators can be used.
Transformers and static compensators are used for voltage
regulation at different points in the transmission system with
static compensator being seen as the more economical and
faster approach. In this paper, modeling of a zone substation
Static Synchronous Compensator (STATCOM) using load
flow algorithms and the coordination of Under-Load Tap
Changing (ULTC) transformer tap changing with the
STATCOM for voltage regulation needs will be studied. The
main aim is to develop and apply a numerical MATLAB
model for a real substation STATCOM with controller
algorithms in order to demonstrate the effects coordinating
the ULTC transformer with the STATCOM.