With the increasing proportion of renewable energy in the power system and the higher proportion of power electronic equipment application, the system strength will weaken, and safe and stable operation will also face greater challenges. To ensure that renewable energy can provide sufficient support for the stable operation of the system, the control strategy of grid-connected inverters has become a key concern. The inverter adopts a virtual synchronous generator control strategy, which can provide good inertia and damping support for the system. By designing reasonable parameters, the stability of the system operation can be effectively improved. To comprehensively analyze the impact of control parameters on the stable operation of the system, evaluate the stability and reliability of the system, build a mathematical model based on the VSG control principle, and analyze the impact of renewable energy units, and active and reactive power control links on system performance. The analysis results indicate that by adjusting the main control parameters reasonably, the stability and reliability of the system can be improved, ensuring that the system has reliable dynamic performance, and providing reference for selecting parameters for system design.