Autonomous coordinated control for microgrids considering
multi-energy complementary with ice storage devices
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以智能运检为核心的变电站开关设备状态深度融合感知技术研究 Research on deep state fusion sensing technology of substation switchgear based on intelligent operation inspection

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    Abstract:

    In order to enhance the flexibility and reliability of multi-energy microgrids with ice storage systems,integrate with distributed generations and energy storage systems effectively,an autonomous cooperative control is proposed in this paper,which consists of control of alternating current (AC) and direct current (DC) microgrids and interlinking converters (ICs). Slack terminals in AC and DC microgrids adopt P-f and P-V droop control respectively. The control of the IC with AC microgrid consists of interlinking power control loop,virtual synchronous control and inner voltage control. The control of the IC with DC microgrid includes interlinking power control and phase shift control. With the proposed method,it is possible to achieve followings. When electric energy is abundant,ice storage,storage battery and other devices absorb electric energy adaptively according to their rated capacity and bear the energy storage energy reasonably. At peak load,the ice storage device is put into operation preferentially,and other energy storage devices is used for other cooling loads,equivalent electrical loads and electrical loads,which is reasonably borne according to the rated capacity ratio. The effectiveness of the proposed control is verified by simulation. It should be noted that the proposed method improves the stability and controllability of the whole system,which provides a novel idea for system-level controller design for multi-energy microgrid.

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History
  • Received:November 25,2021
  • Revised:February 13,2022
  • Adopted:January 28,2021
  • Online: May 24,2022
  • Published: May 28,2022
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