This research proposes a control strategy for the consistent and stable operation of grid-forming flywheel energy storage arrays based on multi-agent system theory. The strategy constructs a multi-agent system with multiple flywheel energy storage units, where each flywheel unit is interconnected through communication lines to exchange information with adjacent units. The active power distribution is managed by the controllers of each flywheel unit. For speed control, a “voltage-speed-current” three closed-loop structure is adopted to directly control the speed of each flywheel unit in the array. In Matlab/Simulink, a flywheel energy storage system model is constructed for simulation experiments. The results demonstrate that this strategy can achieve reasonable power distribution and consistent speed control. Compared to traditional control strategies, this approach simplifies the structure of the grid-forming flywheel energy storage array while enhancing its reliability and robustness.