Load Flow Analysis on Various Distribution Systems to Identify Weak Bus

The accurate assessment of power distribution networks is imperative for ensuring their reliable and efficient operation. Load Flow Analysis (LFA) plays a crucial role in identifying weak buses within distribution systems by providing insights into the steady-state behavior of the network. LFA calculates voltage magnitudes and phase angles at each bus in the distribution system. Deviations from nominal voltage levels indicate potential weak buses experiencing voltage instability due to factors such as high loading or inadequate reactive power support. In this paper, a Backward Forward Sweep Load Flow Analysis (BFS-LFA) method is proposed as a tool for identifying weak buses within distribution systems. The BFS-LFA method iteratively computes the power flow in both forward and backward directions, enabling the determination of voltage magnitudes and phase angles at each bus. By analyzing the voltage profiles and power losses, weak buses, which are prone to voltage instability or significant power losses, are identified. Various distribution system configurations are investigated to assess the effectiveness of the proposed method under different operating conditions and network topologies. The results demonstrate the capability of BFS-LFA in pinpointing weak buses, thereby facilitating targeted reinforcement or optimization strategies to enhance the overall reliability and performance of distribution systems.