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Voltage-based droop control of renewables to avoid on-off oscillations caused by overvoltages

Tine Vandoorn (UGent) , Jeroen De Kooning (UGent) , Bart Meersman (UGent) and Lieven Vandevelde (UGent)
Author
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Abstract
To achieve the environmental goals set by many governments, an increasing amount of renewable energy, often delivered by distributed-generation (DG) units, is injected into the electrical power system. Despite the many advantages of DG, this can lead to voltage problems, especially in times of a high local generation and a low local load. The traditional solution is to invest in more and stronger lines, which could lead to massive investments to cope with the huge rise of DG connection. Another common solution is to include hard curtailment; thus, ON-OFF control of DG units. However, hard curtailment potentially leads to ON-OFF oscillations of DG and a high loss of the available renewable energy as storage is often not economically viable. To cope with these issues, applying a grid-forming control in grid-connected DG units is studied in this paper. The voltage-based droop control that was originally developed for power sharing in islanded microgrids, enables an effective way for soft curtailment without communication. The power changes of the renewable energy sources are delayed to more extreme voltages compared to those of the dispatchable units. This restricts the renewable energy loss and avoids ON-OFF oscillations.
Keywords
voltage control, ON-OFF control, voltage oscillations, Distributed generation (DG), droop controllers, DISTRIBUTED POWER-GENERATION, SYSTEMS, INVERTERS, MANAGEMENT, OPERATION, MICROGRIDS

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MLA
Vandoorn, Tine, et al. “Voltage-Based Droop Control of Renewables to Avoid on-off Oscillations Caused by Overvoltages.” IEEE TRANSACTIONS ON POWER DELIVERY, vol. 28, no. 2, 2013, pp. 845–54, doi:10.1109/TPWRD.2013.2241793.
APA
Vandoorn, T., De Kooning, J., Meersman, B., & Vandevelde, L. (2013). Voltage-based droop control of renewables to avoid on-off oscillations caused by overvoltages. IEEE TRANSACTIONS ON POWER DELIVERY, 28(2), 845–854. https://doi.org/10.1109/TPWRD.2013.2241793
Chicago author-date
Vandoorn, Tine, Jeroen De Kooning, Bart Meersman, and Lieven Vandevelde. 2013. “Voltage-Based Droop Control of Renewables to Avoid on-off Oscillations Caused by Overvoltages.” IEEE TRANSACTIONS ON POWER DELIVERY 28 (2): 845–54. https://doi.org/10.1109/TPWRD.2013.2241793.
Chicago author-date (all authors)
Vandoorn, Tine, Jeroen De Kooning, Bart Meersman, and Lieven Vandevelde. 2013. “Voltage-Based Droop Control of Renewables to Avoid on-off Oscillations Caused by Overvoltages.” IEEE TRANSACTIONS ON POWER DELIVERY 28 (2): 845–854. doi:10.1109/TPWRD.2013.2241793.
Vancouver
1.
Vandoorn T, De Kooning J, Meersman B, Vandevelde L. Voltage-based droop control of renewables to avoid on-off oscillations caused by overvoltages. IEEE TRANSACTIONS ON POWER DELIVERY. 2013;28(2):845–54.
IEEE
[1]
T. Vandoorn, J. De Kooning, B. Meersman, and L. Vandevelde, “Voltage-based droop control of renewables to avoid on-off oscillations caused by overvoltages,” IEEE TRANSACTIONS ON POWER DELIVERY, vol. 28, no. 2, pp. 845–854, 2013.
@article{3097225,
  abstract     = {{To achieve the environmental goals set by many governments, an increasing amount of renewable energy, often delivered by distributed-generation (DG) units, is injected into the electrical power system. Despite the many advantages of DG, this can lead to voltage problems, especially in times of a high local generation and a low local load. The traditional solution is to invest in more and stronger lines, which could lead to massive investments to cope with the huge rise of DG connection. Another common solution is to include hard curtailment; thus, ON-OFF control of DG units. However, hard curtailment potentially leads to ON-OFF oscillations of DG and a high loss of the available renewable energy as storage is often not economically viable. To cope with these issues, applying a grid-forming control in grid-connected DG units is studied in this paper. The voltage-based droop control that was originally developed for power sharing in islanded microgrids, enables an effective way for soft curtailment without communication. The power changes of the renewable energy sources are delayed to more extreme voltages compared to those of the dispatchable units. This restricts the renewable energy loss and avoids ON-OFF oscillations.}},
  author       = {{Vandoorn, Tine and De Kooning, Jeroen and Meersman, Bart and Vandevelde, Lieven}},
  issn         = {{0885-8977}},
  journal      = {{IEEE TRANSACTIONS ON POWER DELIVERY}},
  keywords     = {{voltage control,ON-OFF control,voltage oscillations,Distributed generation (DG),droop controllers,DISTRIBUTED POWER-GENERATION,SYSTEMS,INVERTERS,MANAGEMENT,OPERATION,MICROGRIDS}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{845--854}},
  title        = {{Voltage-based droop control of renewables to avoid on-off oscillations caused by overvoltages}},
  url          = {{http://doi.org/10.1109/TPWRD.2013.2241793}},
  volume       = {{28}},
  year         = {{2013}},
}

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