Sequence Components Based Three-Phase Power Flow Algorithm with Renewable Energy Resources for A Practical Application

Load flow investigations form an essential prerequisite for power system studies. Existing load-flow techniques, particularly single phase solutions are well developed and streamlined for rapid solutions of very large networks. Conventionally balanced single phase load flow analysis is carried out and balanced model of power system is assumed. Three phase load flow solutions is a useful approach as system unbalance cannot be ignored due to un-transposed transmission lines and unbalance loading in power system. This paper deals with the three phase load flow investigations, which aims to find the optimal operation of National Transmission and Dispatch Company (NTDC), 32-Bus 500/220 kV primary Power System. Sequence components based Algorithm is presented for three-phase networks and is tested for IEEE 6-bus 14-Bus and NTDC 32-Bus practical test system. The performance of the system has been studied for different types of renewable energy resources such as solar and hydel generation units for practical scenarios. Comparison of results validates the potential strength of investigations.