Optimization design method and system for AC-side inductance parameters of network-forming converter

The invention provides an optimization design method and system for AC-side inductance parameters of a network-constructed converter. The method comprises the steps that the upper limit value of the AC-side inductance parameters is designed according to the four-quadrant operation requirement of the converter, and the lower limit value of the AC-side inductance parameters is designed according to the total harmonic distortion index of the output current of the converter; the upper limit and the lower limit of the AC side inductance parameter are optimized within the allowable fluctuation range of the AC power grid frequency; optimizing the lower limit of the AC-side inductance parameter according to the transfer function relationship between the DC voltage of the grid-forming converter and the AC power grid voltage; the upper limit of an AC side inductance parameter is optimized according to the transfer function relationship between the DC voltage and the active power fluctuation of the grid-forming converte