As a good demand response resource

air-conditioning load can alleviate the power supply shortage

improve the whole power system operation efficiency and realize the resource optimal configuration

which depends on in-depth research of the basic theory of air-conditioning operating characteristics. Air-conditioning load application on demand response is reviewed in this paper including the air-conditioning system thermodynamic modeling

aggregation models

control pattern and control strategy in running of power systems. According to the actual situation of current domestic and foreign research on air-conditioning load

further research directions of air-conditioning load are discussed. This work is supported by National High Technology Research and Development Program of China(863 Program)(No. 2015AA050401)

National Natural Science Foundation of China(No. 51577029)and State Grid Corporation of China.