Abstract：As the penetration rate of new energy and power electronic equipment increases，the inertia and

damping of the power system decrease，and the stability decreases.The grid-forming control technology builds a

voltage source to support the stable operation of the large power grid through the converter，so as to play the role of rapid frequency and voltage regulation，increase inertia and short-circuit capacity support，and suppress broadband oscillation，so it has gradually attracted attention. Firstly，the differences between the grid-following converter and the grid-forming converter were compared，and the grid-forming control technology was more suitable for the new power system. Secondly，according to the four different control strategies of the grid-forming converter，the control mechanism of these strategies was analyzed in principle. Finally，by using the same initial parameters and simulating the influence of different control strategies on the power grid frequency after the power grid was disturbed by common disturbances，the superiority of VSG control strategy was verified，and the influence of VSG virtual moment of inertia and damping coefficient on the output frequency response of the system was discussed，which provides a reference for further in-depth research.

      Key words：new power system；grid-forming control；current converter；grid energy storage；grid-forming

control strategy；power system stability