Distributed Control Method for Air-conditioning Load Participating in Voltage Management of Distribution Network

Abstract

Copyright © 2021 The Authors. The scale of air-conditioning load in the distribution network is rapidly increasing with the improvement of living level. Furthermore, the buildings equipped with air conditioners have the capability of thermal buffer, which makes it valuable for participating in demand-side response. In the meanwhile, the penetration rate of distributed photovoltaic (PV) power generation in the distribution network is gradually increasing. The fluctuations of PV power generation have a negative impact on the voltage stability of the distribution network. This paper proposes a distributed consensus-driven control method. The aggregated air-conditioning load is scheduled to participate in the voltage management of the distribution network through the limited communication links established between the aggregators. A two-dimensional thermal parameter model is adopted to calculate the thermal exchange of the buildings equipped with air conditioners more accurately to guarantee the thermal comfort requirement of users. Finally, the case studies are performed on a modified IEEE 15-bus distribution network to verify the effectiveness and robustness of the proposed control strategy.