Analysis of Energy Path Transmission in Direct Drive Grid Connected System Under Transient Fault Conditions

In response to the issue of unclear oscillation transmission paths in direct drive wind power grid connected systems during fault transients, this paper describes the energy transmission paths under oscillation in grid connected systems based on transient energy flow analysis methods. Based on the positive and negative damping properties, the key links affecting the grid connected system during oscillation divergence are identified. Finally, the correctness of the theoretical analysis results is verified by building a direct drive wind power grid connected system model on the MATLAB/SIMULINK platform, The analysis results indicate that the key factors affecting the stability of the grid connected system during oscillation divergence are the current loop integration and decoupling current links.