Power System Load Flow Calculation Using Newton-Raphson Method

This MATLAB-implemented power system load flow calculation program based on the Newton-Raphson method serves as a highly practical computational tool. The implementation features robust Jacobian matrix formation and iterative solving techniques that ensure efficient handling of power balance equations. The algorithm employs polar coordinate formulation with mismatch calculations for active and reactive power, incorporating sparse matrix techniques for large-scale systems. The program finds extensive applications in various power system domains including grid planning, operational analysis, and control system design. Its MATLAB foundation ensures excellent cross-platform compatibility and user-friendly operation through structured function organization and GUI integration capabilities. Key functions include admittance matrix formation, power flow initialization, and convergence monitoring with configurable tolerance settings. The computational engine demonstrates exceptional accuracy and numerical stability through proper handling of ill-conditioned systems and singularity prevention mechanisms. This enables users to conduct reliable power system analysis and planning, ultimately contributing to improved grid operational efficiency and enhanced system security. The code incorporates automatic step-size adjustment and convergence acceleration techniques for optimal performance across diverse network configurations.