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Improvement of active power sharing ratio of P/V droop controllers in low-voltage islanded microgrids

Tine Vandoorn (UGent) , Jeroen De Kooning (UGent) , Bart Meersman (UGent) and Lieven Vandevelde (UGent)
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Organization
Abstract
Microgrids provide a coordinated integration of distributed generation units in the electrical power system. By operating in islanded mode, they can increase the reliability of the system or electrify remote areas. For the power sharing and voltage control in low-voltage microgrids, active power/grid voltage droop control is highly suitable. In order to optimize the integration of renewable energy sources in the microgrid, a variant of this droop control, the voltage-based droop (VBD) control, has been presented. A well-known concern about droop controllers is the inherent trade-off between voltage control and power sharing. Therefore, in this paper, an additional control loop is included in the VBD control to improve the active power sharing ratio. In this way, accurate power sharing is achieved, i.e., the DG units respond to load changes exactly according to their droops. Although this modification relies on communication, it does not jeopardize the reliability of the microgrid as if the communication is lost, the basic VBD control still ensures a stable microgrid operation, while operating without the need for communication.
Keywords
IMPEDANCE, SYSTEMS, PARALLEL INVERTERS, distributed generation, droop control, microgrid, power sharing accuracy

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Please use this url to cite or link to this publication:

MLA
Vandoorn, Tine et al. “Improvement of Active Power Sharing Ratio of P/V Droop Controllers in Low-voltage Islanded Microgrids.” IEEE Power and Energy Society General Meeting PESGM. Vancouver, Canada, 2013. Print.
APA
Vandoorn, T., De Kooning, J., Meersman, B., & Vandevelde, L. (2013). Improvement of active power sharing ratio of P/V droop controllers in low-voltage islanded microgrids. IEEE Power and Energy Society General Meeting PESGM. Presented at the General Meeting of the IEEE-Power-and-Energy-Society (PES), Vancouver, Canada.
Chicago author-date
Vandoorn, Tine, Jeroen De Kooning, Bart Meersman, and Lieven Vandevelde. 2013. “Improvement of Active Power Sharing Ratio of P/V Droop Controllers in Low-voltage Islanded Microgrids.” In IEEE Power and Energy Society General Meeting PESGM. Vancouver, Canada.
Chicago author-date (all authors)
Vandoorn, Tine, Jeroen De Kooning, Bart Meersman, and Lieven Vandevelde. 2013. “Improvement of Active Power Sharing Ratio of P/V Droop Controllers in Low-voltage Islanded Microgrids.” In IEEE Power and Energy Society General Meeting PESGM. Vancouver, Canada.
Vancouver
1.
Vandoorn T, De Kooning J, Meersman B, Vandevelde L. Improvement of active power sharing ratio of P/V droop controllers in low-voltage islanded microgrids. IEEE Power and Energy Society General Meeting PESGM. Vancouver, Canada; 2013.
IEEE
[1]
T. Vandoorn, J. De Kooning, B. Meersman, and L. Vandevelde, “Improvement of active power sharing ratio of P/V droop controllers in low-voltage islanded microgrids,” in IEEE Power and Energy Society General Meeting PESGM, Vancouver, Canada, 2013.
@inproceedings{3159799,
  abstract     = {Microgrids provide a coordinated integration of distributed generation units in the electrical power system. By operating in islanded mode, they can increase the reliability of the system or electrify remote areas. For the power sharing and voltage control in low-voltage microgrids, active power/grid voltage droop control is highly suitable. In order to optimize the integration of renewable energy sources in the microgrid, a variant of this droop control, the voltage-based droop (VBD) control, has been presented. A well-known concern about droop controllers is the inherent trade-off between voltage control and power sharing. Therefore, in this paper, an additional control loop is included in the VBD control to improve the active power sharing ratio. In this way, accurate power sharing is achieved, i.e., the DG units respond to load changes exactly according to their droops. Although this modification relies on communication, it does not jeopardize the reliability of the microgrid as if the communication is lost, the basic VBD control still ensures a stable microgrid operation, while operating without the need for communication.},
  author       = {Vandoorn, Tine and De Kooning, Jeroen and Meersman, Bart and Vandevelde, Lieven},
  booktitle    = {IEEE Power and Energy Society General Meeting PESGM},
  isbn         = {9781479913039},
  issn         = {1944-9925},
  keywords     = {IMPEDANCE,SYSTEMS,PARALLEL INVERTERS,distributed generation,droop control,microgrid,power sharing accuracy},
  language     = {eng},
  location     = {Vancouver, Canada},
  pages        = {5},
  title        = {Improvement of active power sharing ratio of P/V droop controllers in low-voltage islanded microgrids},
  year         = {2013},
}

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