Design and analysis of 33 KV and 11 KV electrical networks for distribution systems

Due to the massive growth in electrical energy consumption and the expansions put on distribution systems because of the enormous and rapid urban development, designing electrical distribution systems is currently; regarded as of the utmost importance in Iraq. The electrical system performs best when losses are minimized, the voltage profile is improved, and system component overload is reduced. This technique ensures redundancy and energy recovery in the electricity systems. This study suggests a design to attain the best network operating status by integrating network reconfiguration in synchronism with the insertion of capacitors of optimal sizing and locations. Because of the size of the separate non-linear configure problem, the vast number of variables, and the existence of objectives and conditions, this approach classify as such. The backward/forward load flow approach is used to get all scenarios' power dissipation and voltages on buses. The powerful and sophisticated CYM_Dist program is used to model distribution systems and conduct the necessary analysis in the proposed design of distribution systems. Many electrical enterprises worldwide, including the Iraqi Ministry of Electricity, employ the practical and effective analytical program CYM Dist. Using IEEE 33-bus and IEEE 34-bus test networks, respectively, the most effective ways for reconfiguring the network and placing capacitors are put to the test. Compared to earlier research referenced in the literature, the results exhibit great agreement. The project is being carried out on a real section of the Al-Jamiea 11kV, 145 bus, 4 feeders system in the Najaf city distribution system. The results have been obtained with minimal active power losses and an improved voltage profile.