<p>In order to address the intermittent, fluctuating, low-inertia, and weak-damping issues posed by the “dual high” characteristics of the new energy power system, this research proposes a variable parameter virtual synchronous motor grid-forming control strategy based on a hydrogen electrolyzer. Firstly, addressing the frequency response problem of the system, a virtual synchronous motor control strategy is formulated for the electrolyzer; secondly, based on the influence of virtual inertia and damping coefficient on the response characteristics of the system, it is proposed to construct the Lyapunov energy function by using multiple system state variables, to update and optimize the system control parameters through the energy function. Eventually, a hydrogen-containing new energy IEEE 9-node system is used to simulate and demonstrate the control strategy. The simulation results indicate that, in response to load changes and fluctuations in new energy generation, the method proposed in this paper exhibits smaller voltage fluctuations during the regulation process, with a stable frequency closer to the rated value, resulting in improved frequency regulation performance, which is beneficial for system dynamic response.</p>