Analysis of Feasible Solutions for the Improvement of Voltage Profile in Alkufra Network Containing PV-Generation Unit

This paper focuses only on the problem of voltage fall among the other power quality (PQ) problems. The electrical power grid of Alkufra was selected as a case study. Firstly, the required data of the studied network and that of a planned PV-grid-connected system in the same area were surveyed and collected. Secondly, the models of system components, implementation, and simulations were achieved with the help of using ETAP software. Finally, a comparison between seven scenarios, including base-case and feasible solutions, was investigated based on load flow analysis. The main findings reveal that in the base case, a voltage reduction at all buses of 11 kV was recorded. It was varied between 6.14% and 7.47%. By readjustment of the taps changer, coupling the PV plant, and switchable capacitor banks, a great improvement in voltage reduction was achieved through the seventh scenario. The voltage reduction was kept within a margin range not exceeding 3.98% at all 25 buses.