Hierarchical Control Strategy Based on Droop Coefficient Calibration and Bus Voltage Compensation for DC Microgrid Cluster

Zhao, Ensheng; Liu, Enping; Li, Luqiao; Han, Yi; Yang, Ping

doi:10.1109/ciycee53554.2021.9676881

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The main existing control schemes are proportional integral (PI), angle droop control, P/fdroop, P/Vdroop, virtual impedance loop, and many others. The secondary level functions to restore the MG voltage and frequency to the nominal values [11,12]. When the load on the MG bus changes, so do the voltage and frequency, which must be brought back to their nominal values.…”

Section: Introductionmentioning

confidence: 99%

Contributions to Power Management in AC Microgrids Based on Concepts of Microeconomics Theory

et al. 2022

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Renewable energy sources are growing in importance and reshaping power systems through microgrid (MG) networks. Some relevant issues in the management of an MG need to be addressed, such as voltage and frequency control, power balance between sources (sharing) and distributed loads, stability, security, power quality, etc. As a contribution, this manuscript presents a power management of AC MGs based on concepts of microeconomics theory for market equilibrium. The prices of active and reactive energy are informed through the AC voltage parameters such as magnitude, frequency and angle. This approach allows several sources and loads to operate with no extra communication interface. Experiments are provided to validate operation in many different operational scenarios using a hardware-in-the-loop environment.

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Section: Introductionmentioning

confidence: 99%

Contributions to Power Management in AC Microgrids Based on Concepts of Microeconomics Theory

et al. 2022

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Accurate Peer-to-Peer Hierarchical Control Method for Hybrid DC Microgrid Clusters

et al. 2022

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Hybrid DC microgrid clusters contain various types of converters such as BOOST, BUCK, and bidirectional DC/DC converters, making the control strategy complex and difficult to achieve plug-and-play. The common master–slave hierarchical control strategy makes it difficult to achieve accurate and stable system control. This paper proposes an accurate peer-to-peer hierarchical control method for the hybrid DC microgrid cluster, and the working principle of this hierarchical control method is analyzed in detail. The microgrid cluster consists of three sub-microgrids, where sub-microgrid A consists of three BUCK converters, sub-microgrid B consists of three BOOST converters, and sub-microgrid C consists of two bidirectional DC/DC converters. According to all possible operations of various sub-microgrids in the microgrid cluster, the top-, mid-, and bottom-level controls are designed to solve the coordination control problem among different types of sub-microgrids. In this paper, a hybrid microgrid cluster simulation model is built in the PLECS simulation environment, and an experimental hardware platform is designed. The simulation and experiment results verified the accuracy of the proposed control strategy and its fast plug-and-play regulation ability for the system.

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Hierarchical Control Strategy Based on Droop Coefficient Calibration and Bus Voltage Compensation for DC Microgrid Cluster

Cited by 2 publications

References 17 publications

Contributions to Power Management in AC Microgrids Based on Concepts of Microeconomics Theory

Contributions to Power Management in AC Microgrids Based on Concepts of Microeconomics Theory

Accurate Peer-to-Peer Hierarchical Control Method for Hybrid DC Microgrid Clusters

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