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Research on Multifunctional High-Power Grid Source Simulator System with Synchronous Generator, Line Impedance Imitation, and ZIP Load Emulator

Author

Listed:
  • Hong Zhu

    (National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology, Hefei University of Technology, Hefei 230009, China)

  • Xing Zhang

    (National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology, Hefei University of Technology, Hefei 230009, China)

  • Ming Li

    (National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology, Hefei University of Technology, Hefei 230009, China)

  • Xiaoxi Liu

    (National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology, Hefei University of Technology, Hefei 230009, China)

Abstract

As the penetration of distributed power sources in the power grid is getting higher and higher, the adverse effects are also increasing. It is necessary to adopt control technology to make the distributed power source participate in the power regulation of the power system. In this paper, a multifunctional high-power grid source simulator system is presented. For wider control bandwidth and better performance, a high-power, back-to-back converter and an auxiliary lower-power, back-to-back converter connected in cascade mode topology is proposed in this paper. The basic principle and implementation method of virtual synchronous generator (VSG) in the high-power, back-to-back converter are described to reflect the same power frequency characteristics and voltage regulation characteristics as synchronous generators. Amplitude closed-loop control is proposed to realize zero steady-state error in the lower-power, back-to-back converter, also with line impedance imitation. Meanwhile, a constant-impedance, constant-current, and constant-power (ZIP) load model is used to emulate static load in the grid simulator system. At last, a set of experimental results for a 2 MW grid simulator system is provided to verify the effectiveness and validity of the proposed approach.

Suggested Citation

  • Hong Zhu & Xing Zhang & Ming Li & Xiaoxi Liu, 2019. "Research on Multifunctional High-Power Grid Source Simulator System with Synchronous Generator, Line Impedance Imitation, and ZIP Load Emulator," Energies, MDPI, vol. 12(24), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:24:p:4657-:d:295443
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    References listed on IDEAS

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    1. Jaume Miret & José Luís García de Vicuña & Ramón Guzmán & Antonio Camacho & Mohammad Moradi Ghahderijani, 2017. "A Flexible Experimental Laboratory for Distributed Generation Networks Based on Power Inverters," Energies, MDPI, vol. 10(10), pages 1-27, October.
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