Iraq network 400kV, 50Hz interconnect with Iran, Turkey and Syria using phase-shifting transformers in control and limit power flow of countries

International interconnections generate a series of advantages within those countries that are connected. The most significant of these is the contribution to the security and continuity of the electricity supply within those interconnected systems. This paper presents the benefit of regional-interconnection networks, and the improvement of Iraq transmission network in its generation and transmission capacity by connecting 400kV, 50HZ grid with neighboring countries (Iran, Syria, and Turkey). The Phase-shifting transformer (PST) proves to be more effective than other devices to control the active power flow between two large independent grids of different areas or countries. This paper focuses on the efficiency of PST in limiting the magnitude and direction of active power flow from these countries 400kVnetworks to Iraq network In this paper, SVC is used to regulate active power transfer by regulating voltage at load side, using Matlab and Simulink Different results are presented based on various scenarios.