Performance Enhancement of Atbara-Portsudan Radial Transmission Line Using NEPLAN Simulator

Due to the ever increasing demand of power, economic and environmental constraints that limit the expansion and restructuring transmission networks, the transmission lines are prone to be operated under heavily stress conditions, and power systems to operate near critical limits. This paper investigates the problem and different scenarios to improve the power transfer capability of Atbara-Portsudan single circuit 220kV radial transmission line as one of the Sudan Grid problems. This line was selected depending on line indices such as Fast Voltage Stability Index (FVSI), Line Stability Index (Lmn), U-Q sensitivities. Simulation was carried out using NEPLAN software, based on real data given from National Load Dispatch Center (NLDC) in Sudan. All the results presented in comparison form to find the best scenario.