A hierarchical coordinated control strategy of air-conditioning loads for peak regulation service

Abstract

The increased penetration of renewable energy sources and the intensification of peak-valley differences present challenges to peak regulation in the power system. Fulfilling the peak regulation needs of the power system solely through generation-side resources proves to be challenging. Large-scale fixed frequency air-conditioning (FFAC) and inverter air-conditioning (IAC) are high-quality flexible load resources. This paper proposes a hierarchical coordinated control strategy of air-conditioning (AC) loads for peak regulation service. In the first layer of the control strategy, the load aggregator collaborates with multiple AC groups to ensure the completion of peak regulation tasks with specific power-constrained requirements. In the second layer of the control strategy, the control centre of each group optimizes the temperature adjustment values for each AC load, aiming to reduce incentive costs. Finally, the proposed method is validated through simulations, demonstrating its capability to achieve coordinated control of FFAC and IAC loads under various power-constrained requirements. Furthermore, the simulation demonstrates the effectiveness of the control strategy in reducing user discomfort and the AC's incentive costs.