Demand response of inverter air conditioners and applications in distribution system voltage stability enhancement

Abstract

Tremendous air-conditioner loads already have significant impact on the operation safety of Chinese distribution system. In the view of demand response, this paper aims to enhance distribution system voltage stability by improving inverter air-conditioners dynamic characteristics under power system short-term fluctuations. First of all, an inverter airconditioner load model based on dynamic phasor theory is proposed. Then after an analysis on some effect factors of airconditioners load characteristics, an autonomous control strategy for inverter air-conditioners is presented and verified by simulation results. Finally, in order to providing ancillary services to the power system, a preliminary thought by integrating inverter air-conditioners into the emerging energy management systems is proposed.

Active Participation of Air Conditioners in Power System Frequency Control Considering Users’ Thermal Comfort

“…Moreover, TCLs, especially air conditioners take a large proportion in load portfolio. For instance, in China, the proportion of air conditioners in peak power is almost 30%-40% during summer and grows year by year [21]. Consequently, air conditioners can take an active role for frequency control [22].…”