: Virtual impedance technology plays an important role in power system. This paper presents a method of fault crossing (FRT) for high order virtual synchronous generator (VSG) by adjusting virtual armature resistance. When the system detects a fault, the virtual resistance can be directly adjusted to limit the current during the fault, thus improving the dynamic characteristics of the system and improving the stability of the system. In order to verify the effectiveness of this method, a hardware real-time simulation platform is established, which uses Typhoon HIL 402 device and Texas Instruments F28379D digital controller. In the three-phase fault scenario, the peak fault current of the converter is reduced from 5 kA to 1.4 kA by adjusting the virtual resistance value, which verifies the proposed FRT strategy. After the fault is cleared, the proposed control algorithm makes VSG smoothly transition to island mode when the network is disconnected by the protection system. This study provides a simplified method for virtual impedance design and has achieved remarkable results in practical applications.