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Black-Box Behavioral Modeling of Voltage and Frequency Response Characteristic for Islanded Microgrid

Author

Listed:
  • Yong Shi

    (Anhui New Energy Utilization and Energy Saving Laboratory, School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

  • Dong Xu

    (Anhui New Energy Utilization and Energy Saving Laboratory, School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

  • Jianhui Su

    (Anhui New Energy Utilization and Energy Saving Laboratory, School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

  • Ning Liu

    (Anhui New Energy Utilization and Energy Saving Laboratory, School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

  • Hongru Yu

    (Anhui New Energy Utilization and Energy Saving Laboratory, School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

  • Huadian Xu

    (Anhui New Energy Utilization and Energy Saving Laboratory, School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

Abstract

The voltage and frequency response model of microgrid is significant for its application in the design of secondary voltage frequency controller and system stability analysis. However, most models developed for this aspect are complex in structure due to the difficult mechanism modeling process and are only suitable for offline identification. To solve these problems, this paper proposes a black-box modeling method to identify the voltage and frequency response model of microgrid online. Firstly, the microgrid system is set as a two-input, two-output black-box system and can be modeled only by data sampled at the input and output ports. Therefore, the simplicity of modeling steps can be guaranteed. Meanwhile, the recursive damped least squares method is used to realize the online model identification of the microgrid system, so that the model parameters can be adjusted with the change of the microgrid operating structure, which makes the model more adaptable. The paper analyzes the black-box modeling process of the microgrid system in detail, and the microgrid platform, including 100 kW rated power inverters, is employed to validate the analysis and experimental results.

Suggested Citation

  • Yong Shi & Dong Xu & Jianhui Su & Ning Liu & Hongru Yu & Huadian Xu, 2019. "Black-Box Behavioral Modeling of Voltage and Frequency Response Characteristic for Islanded Microgrid," Energies, MDPI, vol. 12(11), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:11:p:2049-:d:235193
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    Cited by:

    1. Pierluigi Siano & Miadreza Shafie-khah, 2020. "Special Issue on Advanced Approaches, Business Models, and Novel Techniques for Management and Control of Smart Grids," Energies, MDPI, vol. 13(11), pages 1-3, May.

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