Power Flow Calculation Program Using Forward-Backward Sweep Method

The power flow calculation program utilizes the forward-backward sweep method. In distribution network power flow calculations, unlike transmission networks that operate in closed loops, distribution networks (which deliver power from substations to end-users) typically function with radial or open-loop configurations. Distribution systems operate at lower voltage levels but cover extensive geographical areas with greater complexity. They require consideration of additional factors compared to transmission systems, including diverse load types, distributed generation resources, and losses from various electrical components like cables. Consequently, power flow calculations for distribution networks are more complex than those for transmission systems. The forward-backward sweep algorithm effectively handles this complexity through iterative voltage and current calculations: the forward sweep propagates nodal voltages from the source to endpoints, while the backward sweep calculates branch currents from endpoints back to the source. This method provides accurate power flow distribution results for distribution networks, enabling better maintenance of power system stability and reliability. Key implementation aspects typically include node-branch relationship matrices, convergence criteria for voltage mismatches, and handling of multiple feeder configurations through sequential processing of network segments.