Study on Influencing Factors of Air-Conditioning Loads Participating in Frequency Modulation of Power System

Frequency is a crucial parameter to judge the power quality of power system, and also a key factor to maintain the stable operation. Air-conditioning load (ACL) can participate in frequency modulation (FM) of power system, in order to deal with the adverse effect of numbers of renewable energy input power system. Therefore, a cluster load model based on the first-order ETP is established according to the operating characteristic of air-conditioning (AC). In this paper, the influencing factors of its participation in FM are studied. This paper analyzes the influence results of many factors, especially considers the power consumption probability of ACLs under the influence of user's behavior. A power consumption probability model of ACs based on user behavior is proposed, which is incorporated into the cluster model. The validity of the proposed models, which provide a basis for the load side to participate in power system, was verified by simulation.