Different Convergence Strategies for Power Flow Stability Enhancement in Difficult Non-convergent Cases: A Simulation-based Study

Power grid planning relies heavily on accurate power flow calculations, making the achievement of convergent power flow conditions crucial for various system analysis tasks. This paper addresses the challenge of non-convergence in power flow computations using a PSS/E node-breaker model. We conduct a comprehensive analysis of the essential control parameters necessary to address convergence challenges. Furthermore, we introduce and evaluate multiple strategies aimed at enhancing convergence, especially in complex load-generation scaling scenarios. Our findings offer valuable insights for both academia and industry professionals seeking to deepen their understanding of convergence issues in power flow. By implementing these strategies, power system engineers can enhance the reliability and performance of power grids, ensuring their performance in the face of non-convergence scenarios.