STORAGE-LOAD COORDINATED CONTROL SCHEME FOR MICROGRID CONSIDERING TIME CONSTRAINTS OF BATTERY STORAGE UNITS

Wu Qingfeng; Wang Yi; Yu Shaojuan; Sun Xiaofeng; Dong Jia

doi:10.19912/j.0254-0096.tynxb.2022-1390

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 453-462. DOI: 10.19912/j.0254-0096.tynxb.2022-1390

STORAGE-LOAD COORDINATED CONTROL SCHEME FOR MICROGRID CONSIDERING TIME CONSTRAINTS OF BATTERY STORAGE UNITS

Wu Qingfeng¹, Wang Yi¹, Yu Shaojuan¹, Sun Xiaofeng², Dong Jia³

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Abstract

When the photovoltaic, wind turbine and other renewable energy power generation devices in the microgrid fail or the weather conditions are poor, and the output energy is insufficient to support the load, the battery energy storage system （BESS） in the microgrid is required to have a certain load support capacity. Based on this, a load-storage coordinated control scheme of isolated microgrid considering BESS time constraint is proposed. According to the time constraints and system frequency constraints of the BESS, the scheme uses a two-level multi-agent system （MAS） to manage the non-critical loads in the microgrid, so that the BESS can reserve sufficient capacity to support the normal operation of critical loads before power supply recovery and ensure that the frequency is within the specified range. ALSO, in order to ensure that all BESS supply power to the load at the same time to reduce load shedding, a state of charge （SOC） balancing scheme between BESS groups based on two-level MAS is proposed. The simulation results show that the proposed scheme can simultaneously realize the time constraint, SOC balancing and frequency control of BESS.

Key words

battery energy storage / multi agent system / electric load management / time constraint / SOC balancing

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Wu Qingfeng, Wang Yi, Yu Shaojuan, Sun Xiaofeng, Dong Jia. STORAGE-LOAD COORDINATED CONTROL SCHEME FOR MICROGRID CONSIDERING TIME CONSTRAINTS OF BATTERY STORAGE UNITS[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 453-462 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1390

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