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Stability evaluation of a DC micro-grid and future interconnection to an AC system

Author

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  • Sanchez, Santiago
  • Molinas, Marta
  • Degano, Marco
  • Zanchetta, Pericle

Abstract

This paper presents the stability analysis of a DC micro-grid fed by renewable sources and the future interconnection with an AC micro-grid. This interconnection is realized through a voltage source converter, and the operation of the micro-grid is in island mode. The stability is analyzed by the Nyquist criteria with the impedance relation method. The frequency response of the models was obtained by the injection of a perturbation current at the operation point. Where this perturbation was at the input of the converter used to export power from the DC grid. Other perturbation was applied at the node of the micro-grid to evaluate its impedance. Finally the simulations show the impedance representation of the systems, and the stability for the interconnection of them. The experimental verification shows the impedance of the converter with the same tendency as the representation obtained by the analytical and simulation.

Suggested Citation

  • Sanchez, Santiago & Molinas, Marta & Degano, Marco & Zanchetta, Pericle, 2014. "Stability evaluation of a DC micro-grid and future interconnection to an AC system," Renewable Energy, Elsevier, vol. 62(C), pages 649-656.
    • Handle: RePEc:eee:renene:v:62:y:2014:i:c:p:649-656
    DOI: 10.1016/j.renene.2013.08.026
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    Cited by:

    1. Bo, Zeng & Shaojie, Ouyang & Jianhua, Zhang & Hui, Shi & Geng, Wu & Ming, Zeng, 2015. "An analysis of previous blackouts in the world: Lessons for China׳s power industry," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 1151-1163.
    2. Wang, Yunqi & Ravishankar, Jayashri & Phung, Toan, 2016. "A study on critical clearing time (CCT) of micro-grids under fault conditions," Renewable Energy, Elsevier, vol. 95(C), pages 381-395.
    3. Van den Broeck, Giel & Stuyts, Jeroen & Driesen, Johan, 2018. "A critical review of power quality standards and definitions applied to DC microgrids," Applied Energy, Elsevier, vol. 229(C), pages 281-288.
    4. Mahdavyfakhr, Mohammad & Rashidirad, Nasim & Hamzeh, Mohsen & Sheshyekani, Keyhan & Afjei, Ebrahim, 2017. "Stability improvement of DC grids involving a large number of parallel solar power optimizers: An active damping approach," Applied Energy, Elsevier, vol. 203(C), pages 364-372.
    5. Planas, Estefanía & Andreu, Jon & Gárate, José Ignacio & Martínez de Alegría, Iñigo & Ibarra, Edorta, 2015. "AC and DC technology in microgrids: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 726-749.
    6. Ishita Ray, 2021. "Review of Impedance-Based Analysis Methods Applied to Grid-Forming Inverters in Inverter-Dominated Grids," Energies, MDPI, vol. 14(9), pages 1-18, May.
    7. Dali, Ali & Abdelmalek, Samir & Bakdi, Azzeddine & Bettayeb, Maamar, 2021. "A new robust control scheme: Application for MPP tracking of a PMSG-based variable-speed wind turbine," Renewable Energy, Elsevier, vol. 172(C), pages 1021-1034.
    8. Urtasun, Andoni & Sanchis, Pablo & Barricarte, David & Marroyo, Luis, 2014. "Energy management strategy for a battery-diesel stand-alone system with distributed PV generation based on grid frequency modulation," Renewable Energy, Elsevier, vol. 66(C), pages 325-336.
    9. Charalambous, Chrysanthos & Heracleous, Chryso & Michael, Aimilios & Efthymiou, Venizelos, 2023. "Hybrid AC-DC distribution system for building integrated photovoltaics and energy storage solutions for heating-cooling purposes. A case study of a historic building in Cyprus," Renewable Energy, Elsevier, vol. 216(C).
    10. Bo Long & Taek Won Jeong & Jong Deuk Lee & Yoo Cheol Jung & Kil To Chong, 2015. "Energy Management of a Hybrid AC–DC Micro-Grid Based on a Battery Testing System," Energies, MDPI, vol. 8(2), pages 1-14, February.

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