MENG Qingzuo, LIN Pengfeng, ZHU Miao, et al. Transient Global Inertia Sharing and Steady-state Frequency/Voltage Recovery Control Strategy for Hybrid AC/DC/DS Microgrid[J]. 2026, 46(15): 6201-6213.
DOI:
MENG Qingzuo, LIN Pengfeng, ZHU Miao, et al. Transient Global Inertia Sharing and Steady-state Frequency/Voltage Recovery Control Strategy for Hybrid AC/DC/DS Microgrid[J]. 2026, 46(15): 6201-6213.DOI: 10.13334/j.0258-8013.pcsee.251449.
Transient Global Inertia Sharing and Steady-state Frequency/Voltage Recovery Control Strategy for Hybrid AC/DC/DS Microgrid
混合交流(alternating current,AC)/直流(direct current,DC)/分布式储能(distributed energy storage,DS)微电网通过整合交流、直流及分布式储能子网,可有效提升偏远地区的能源可及性与供电稳定性。然而,传统微电网结构单一,多聚焦于交流频率或直流母线电压的单一调节。相比之下,混合微电网中频率和电压相互耦合,必须同时调节频率和电压,防止其出现暂态深度跌落和稳态大幅偏移。针对上述问题,该文提出面向混合微电网的暂态全局惯量互济与稳态频率/电压自主恢复控制策略,实现子网间惯量多边传导和频率/电压稳态自主恢复;此外,该文构建混合微电网的全局等效电路模型,从电路视角刻画系统的全时间尺度响应特性,阐明交直流混联系统的暂态惯量传导和频率/电压自主恢复机制;最后,基于硬件在环实验平台,验证所提控制策略与等效电路模型的有效性。
Abstract
The hybrid AC/DC/distributed energy storage (DS) microgrid (MG) can enhance energy accessibility and supply stability in remote areas. Whereas conventional MG typically regulate either AC frequency or DC bus voltage independently
the hybrid AC/DC/DS MG feature coupling between frequency and voltage
preventing transient deep drops and large steady-state excursions. To address these challenges
this paper proposes a transient global inertia sharing and steady-state frequency/voltage recovery control strategy to achieve multilateral inertia conduction between subgrids and steady-state frequency/voltage autonomous recovery. Additionally
this paper develops a global equivalent circuit model of hybrid AC/DC/DS MG
characterizing the system's full-time-scale response from a circuit perspective. It elucidates the transient inertia sharing and the autonomous restoration mechanisms of steady-state frequency and voltage in the hybrid AC/DC/DS MG. Finally
the proposed control strategy and equivalent circuit model are validated on a hardware-in-the-loop experimental platform.
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