Autonomous control is an important way to improve the control performance of large-scale air-conditioner(AC). Thus

an autonomous control method based on demand curve is proposed for the inverter AC. Firstly

the construction of demand curve for each AC is introduced. Based on the demand curve

the AC's regulation flexibility and user's preferences are expressed

and the concensus control of AC's comfort is achieved

which can fully utilize the regulation capacity of the AC. Secondly

according to the way the demand curve is used

the active response and passive response control methods are proposed. The two methods can satisfy the different requirements for tracking accuracy and communication traffic

and are applied to frequency regulation and fluctuation mitigation

respectively. Finally

the simulation analysis on the control effect and model errors is conducted to verify the effectiveness of the proposed method.