Comparison of techniques for voltage control and power system stability in the north of Iraq

Power flow and voltage control are a vital role in the north of Iraq's electrical power system. This thesis illustrates the potential applications of flexible AC transmission system (FACTS) controllers, such as the static VAR compensator (SVC) and the Static synchronous compensator (STATCOM) for the control of voltage and power flow, and improving the voltage regulation. The STATCOM and SVC are used in 132 kV Soran substation. Based on, a back to back connected thyristor valves and voltage-source converter, SVC and STATCOM regulate system voltage by generating or absorbing reactive power. The objective is to define the reactive power generated and voltage control at 132 kV Soran substation using STATCOM and SVC. Finally, in case, our study has compared the STATCOM with SVC in static voltage stability improvement. Different performance measures have been considered under different operating system conditions for the north of Iraq's electrical power system. The results show that STATCOM has better performance over SVC.