Research on stability analysis method of flexible power system based on impedance remodeling control strategy

As the stable operation of flexible interconnected systems provides an important physical foundation for AI-driven resilience enhancement in modern power systems, it is crucial to enhance their stability. Therefore, this paper proposes an impedance remodeling control strategy. Firstly, the topology structure and fundamental control strategy of the classical flexible power grid are analyzed, and the equivalent impedance of the alternating current (AC) and direct current (DC) sides of the system is derived based on the Thevenin and Norton equivalence theorems. Secondly, in response to the stability issues on both the AC and DC sides of the flexible interconnection system during bidirectional power transmission, an impedance remodeling control strategy on both sides of the system is proposed to improve the stability of the system. Finally, the proposed method is validated through MATLAB simulations, and the results demonstrate that the method effectively enhances the overall stability of the system.