Controlling air conditioning load to participate in the power grid load shifting has great potential for maintaining stable operation of the system,reducing the reserve of generators,and improving the efficiency of the grid.Based on the principle of the household decentralized air conditioner,a simplified air conditioning room temperature adjustment model was built in the MATLAB/Simulink environment.Based on the model,the characteristics of the fixed/inverter air conditioner temperature adjustment and influence of adjusting frequency conversion interval were studied in turn.Considering characteristics of air conditioners,a strategy is proposed to conduct an adaptively complementary operation of the air conditioner according to grid load.Finally,the model simulation test based on RT-LAB real-time simulation platform is carried out,which verifies the correctness of the model and effectiveness of the strategy to participate air conditioners in peak shaving control.