Method and device for limiting transient current of grid-forming converter

The invention discloses a method and a device for limiting transient current of a grid-forming converter. The method comprises the following steps: acquiring x-axis components icx (t) and y-axis components icy (t) of injection current of the grid-forming converter; obtaining an injection current amplitude Ic according to the x-axis component icx (t) and the y-axis component icy (t) of the injection current; and if the amplitude Ic of the injection current is greater than the allowable extreme value current Iclim, introducing an amplitude compensation amount delta Ec and a power angle compensation amount delta delta c of the internal potential to compensate the amplitude and the power angle of the internal potential of the grid-forming converter respectively, so that the compensated internal potential vector is located in a current safety domain. According to the method and the device provided by the embodiment of the invention, simple and flexible current limiting can be realized, and the requirements of a co