Improvement of the Under-Voltage Problem in the Sudanese Network by Using FACTS/SVC Controller

The power network, in general, must treat some essential requirements: the necessity to modify supply or customer to maintain the power flow in transmission system within acceptable voltage level, and the necessity to preserve equilibrium between load and generation a near real-time. FACTS is a solution to compensate the required real and reactive power necessary for distribution networks in response to large disturbances. One of the FACTS family is the SVC device which is designed to improve the power factor of the system to unity or close to unity so as to improve the power demand instead of using capacitor banks. The main purpose of this work is to investigate the impact of installing the Static VARs Compensators (SVCs) instead of traditional capacitor bank techniques at primary distribution system in Sudanese Gird. The SVCs technique provides rapid dynamic response, and smoothly adjusts the variations in the VARs output which regulate the transmission voltage. The simulation result of Sudanese Network, using NEPLAN program, shows that the voltage profile can be significantly improved by using SVC controllers compared to capacitor banks. The proposed approach is well design to select the most suitable size and location for SVC compensators to solve under/over-voltages problem and minimize power losses in distribution system for the Sudanese Network.