Adaptive droop coefficient-based reactive power sharing strategy for islanded microgrid

doi:10.13878/j.cnki.jnuist.20230726001

2025-5-25- 11

Home > Archive>Volume 16, Issue 4, 2024 >528-536. DOI:10.13878/j.cnki.jnuist.20230726001

Adaptive droop coefficient-based reactive power sharing strategy for islanded microgrid
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                        10.13878/j.cnki.jnuist.20230726001
                    
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                        CHENG YongCHENG Yong
School of Electrical and Control Engineering/Xian Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security, Xian University of Science and Technology, Xian 710054, China
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CHENG QiCHENG Qi
School of Electrical and Control Engineering/Xian Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security, Xian University of Science and Technology, Xian 710054, China
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YAO LeiruYAO Leiru
School of Electrical and Control Engineering/Xian Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security, Xian University of Science and Technology, Xian 710054, China
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ZHAO JianwenZHAO Jianwen
School of Electrical and Control Engineering/Xian Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security, Xian University of Science and Technology, Xian 710054, China
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Abstract:

In the islanded microgrid,the mismatch in line impedance hinders the traditional droop control from achieving an equal distribution of reactive power among Distributed Generation (DG) sources.To address this problem and enhance the flexibility and reliability of the controller,this paper analyzes the reasons behind the failure of traditional droop control and proposes an adaptive droop coefficient that can be dynamically adjusted to meet the conditions for reactive power sharing.Additionally,a dynamic distributed observer is designed and its convergence is proven,which allows DG sources to obtain necessary information flexibly and reliably in a distributed manner.Finally,the proposed control strategy is verified through simulations in four different scenarios,and the results demonstrate its superiority and effectiveness.

Key words:microgrid;adaptive;reactive power sharing;distributed control

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CHENG Yong, CHENG Qi, YAO Leiru, ZHAO Jianwen. Adaptive droop coefficient-based reactive power sharing strategy for islanded microgrid[J]. Journal of Nanjing University of Information Science & Technology,2024,16(4):528-536

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Received:July 26,2023
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Online: August 07,2024
Published: July 28,2024

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