Objective As integrated data centers (IDC) gradually become an emerging large-scale load, fully leveraging IDC demand-side response is beneficial for achieving the optimal control of active distribution networks (ADN) and improving the new energy utilization rate of distribution networks.

Method To address the above issues, this paper proposed an ADN optimization control strategy involving FOPI-FOPD, which was based on the demand-side response characteristics of IDC and the cascading of Fractional Order Proportional Integral (FOPI) and Fractional Order Proportional Differential (FOPD) control. Firstly, this paper constructed a power consumption model that considered the time transfer characteristics, space transfer characteristics of response loads and new energy consumption characteristics, and conducted modeling research on its demand-side response participation in ADN optimization control. Secondly, different optimization control strategies were designed by combining several control principles to optimize the energy consumption structure of the distribution network, improve the new energy utilization rate, and achieve optimal control of the distribution network. Finally, simulation analysis was conducted on a large data center in Guizhou Province with 1000 servers.

Result The results show that compared with other control strategies, the FOPI-FOPD control strategy achieves better optimization control effects: the operational cost is reduced by 1.71%, the peak-valley difference is reduced by 21.92%, and the new energy utilization rate is increased by 15.78% to 17.02%.

Conclusion The simulation results verify the effectiveness and rationality of the proposed optimization control strategy.