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A Novel Decentralized Economic Operation in Islanded AC Microgrids

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  • Hua Han

    (School of Information Science and Engineering, Central South University, Changsha 410083, China)

  • Lang Li

    (School of Information Science and Engineering, Central South University, Changsha 410083, China)

  • Lina Wang

    (School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China)

  • Mei Su

    (School of Information Science and Engineering, Central South University, Changsha 410083, China)

  • Yue Zhao

    (Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, USA)

  • Josep M. Guerrero

    (Department of Energy Technology, Aalborg University, DK-9220 Aalborg East, Denmark)

Abstract

Droop schemes are usually applied to the control of distributed generators (DGs) in microgrids (MGs) to realize proportional power sharing. The objective might, however, not suit MGs well for economic reasons. Addressing that issue, this paper proposes an alternative droop scheme for reducing the total active generation costs (TAGC). Optimal economic operation, DGs’ capacity limitations and system stability are fully considered basing on DGs’ generation costs. The proposed scheme utilizes the frequency as a carrier to realize the decentralized economic operation of MGs without communication links. Moreover, a fitting method is applied to balance DGs’ synchronous operation and economy. The effectiveness and performance of the proposed scheme are verified through simulations and experiments.

Suggested Citation

  • Hua Han & Lang Li & Lina Wang & Mei Su & Yue Zhao & Josep M. Guerrero, 2017. "A Novel Decentralized Economic Operation in Islanded AC Microgrids," Energies, MDPI, vol. 10(6), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:6:p:804-:d:101352
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    References listed on IDEAS

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    Cited by:

    1. Mei Su & Chao Luo & Xiaochao Hou & Wenbin Yuan & Zhangjie Liu & Hua Han & Josep M. Guerrero, 2018. "A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters," Energies, MDPI, vol. 11(6), pages 1-18, May.
    2. Hoon Lee & Jin-Wook Kang & Bong-Yeon Choi & Kyung-Min Kang & Mi-Na Kim & Chang-Gyun An & Junsin Yi & Chung-Yuen Won, 2021. "Energy Management System of DC Microgrid in Grid-Connected and Stand-Alone Modes: Control, Operation and Experimental Validation," Energies, MDPI, vol. 14(3), pages 1-26, January.
    3. Haolan Liang & Zhangjie Liu & Hua Liu, 2019. "Stabilization Method Considering Disturbance Mitigation for DC Microgrids with Constant Power Loads," Energies, MDPI, vol. 12(5), pages 1-19, March.
    4. Mi Dong & Li Li & Lina Wang & Dongran Song & Zhangjie Liu & Xiaoyu Tian & Zhengguo Li & Yinghua Wang, 2018. "A Distributed Secondary Control Algorithm for Automatic Generation Control Considering EDP and Automatic Voltage Control in an AC Microgrid," Energies, MDPI, vol. 11(4), pages 1-18, April.
    5. Jean-Michel Clairand & Javier Rodríguez-García & Carlos Álvarez-Bel, 2018. "Electric Vehicle Charging Strategy for Isolated Systems with High Penetration of Renewable Generation," Energies, MDPI, vol. 11(11), pages 1-21, November.

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