By mimicking the operational properties of synchronous generators, grid-forming converters can enable new power systems with respect to voltage and frequency. However, its voltage source characteristics lead to an output current that is prone to overcurrent accidents during faults and is dictated by external operating parameters. It is challenging to actively preserve the grid during fault current limiting using the conventional reference current limiting approach, and it carries the danger of transient instability. This paper proposes a virtual power control to simultaneously balance the demands of active grid support and fault current limiting. Firstly, the typical control structure of the grid-constructing converter in a new type of power system and the technical challenges it faces are given; Secondly, the basic principle of proposed virtual power control and the mechanism of active grid support are given, and elaborated from the perspective of power angle characterization. Finally, a MATLAB/Simulink simulation model is constructed to verify the superiority of the proposed virtual power control.