Abstract：In the critical period of the implementation of the strategy of "carbon neutrality，carbon peak"，the

frequency characteristics of the new power system show a series of new characteristics，such as the reduction of

node inertia level and obvious distribution difference，and the maintenance of frequency stability and security are

faced with many challenges. Using the diversified frequency modulation（FM）resources in the new energy system

is an effective means to improve the inertial response of new energy and the ability of primary FM. However，the

intermittent volatility of new energy and the interaction between inertia control and sag control parameters lead to

the contradiction between the frequency modulation response speed and stability，so the coordinated optimization of frequency modulation parameters of new energy units is very important. Therefore，a new power system frequency modulation parameter coordination optimization strategy based on crossbar algorithm was proposed. The crossbar algorithm was used to effectively avoid the advantage of falling into the local optimal solution，optimize and coordinate the control parameters of new energy and grid type virtual inertia，improve the frequency dynamic

response index of new energy grid-connected nodes，and suppress frequency oscillation. Meanwhile，the crossbar

algorithm was tried to apply to the optimization and control of frequency modulation parameters of new power

system for the first time，and also can effectively expand the theoretical content and application range of crossbar

algorithm，which has certain theoretical value and engineering significance.

      Key words：new power system；frequency modulation parameters；crossbar algorithm