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Neutral-point shifting and voltage unbalance due to single-phase DG units in low voltage distribution networks

Lieven Degroote (UGent) , Bert Renders (UGent) , Bart Meersman (UGent) and Lieven Vandevelde (UGent)
Author
Organization
Abstract
When distributed generation (DG) units are connected to a low voltage (LV) single-phase distribution network the voltage profile will change. The connection of single-phase DG units to three-phase distribution networks will not only alter the voltage profile in the connected phase, but also the two other phase voltages will be influenced due to neutral-point shifting and voltage unbalance. The purpose of this paper is to examine the influence of single-phase DG units on the phase voltages, in different circumstances. This will be investigated by performing several simulations. In order to make these detailed simulations, an unbalanced multiphase harmonic power flow method, considering the neutral wire, will be proposed. The presented model uses the iterative forward/backward method. Furthermore, the network is solved by using symmetrical components and the prevalent convergence problems will be tackled in this paper.
Keywords
Symmetrical components, Distributed generation (DG), Radial distribution networks, Voltage unbalance, Neutral-point shifting, Harmonic power flow method, ITERATIVE HARMONIC-ANALYSIS, DISTRIBUTION-SYSTEM ANALYSIS, POWER-FLOW METHOD

Citation

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

MLA
Degroote, Lieven, et al. “Neutral-Point Shifting and Voltage Unbalance Due to Single-Phase DG Units in Low Voltage Distribution Networks.” 2009 IEEE BUCHAREST POWERTECH, VOLS 1-5, edited by Lucian Toma and Bogdan Otomega, IEEE, 2009, pp. 122–29.
APA
Degroote, L., Renders, B., Meersman, B., & Vandevelde, L. (2009). Neutral-point shifting and voltage unbalance due to single-phase DG units in low voltage distribution networks. In L. Toma & B. Otomega (Eds.), 2009 IEEE BUCHAREST POWERTECH, VOLS 1-5 (pp. 122–129). New York, NY, USA: IEEE.
Chicago author-date
Degroote, Lieven, Bert Renders, Bart Meersman, and Lieven Vandevelde. 2009. “Neutral-Point Shifting and Voltage Unbalance Due to Single-Phase DG Units in Low Voltage Distribution Networks.” In 2009 IEEE BUCHAREST POWERTECH, VOLS 1-5, edited by Lucian Toma and Bogdan Otomega, 122–29. New York, NY, USA: IEEE.
Chicago author-date (all authors)
Degroote, Lieven, Bert Renders, Bart Meersman, and Lieven Vandevelde. 2009. “Neutral-Point Shifting and Voltage Unbalance Due to Single-Phase DG Units in Low Voltage Distribution Networks.” In 2009 IEEE BUCHAREST POWERTECH, VOLS 1-5, ed by. Lucian Toma and Bogdan Otomega, 122–129. New York, NY, USA: IEEE.
Vancouver
1.
Degroote L, Renders B, Meersman B, Vandevelde L. Neutral-point shifting and voltage unbalance due to single-phase DG units in low voltage distribution networks. In: Toma L, Otomega B, editors. 2009 IEEE BUCHAREST POWERTECH, VOLS 1-5. New York, NY, USA: IEEE; 2009. p. 122–9.
IEEE
[1]
L. Degroote, B. Renders, B. Meersman, and L. Vandevelde, “Neutral-point shifting and voltage unbalance due to single-phase DG units in low voltage distribution networks,” in 2009 IEEE BUCHAREST POWERTECH, VOLS 1-5, Bucharest, Romania, 2009, pp. 122–129.
@inproceedings{715709,
  abstract     = {{When distributed generation (DG) units are connected to a low voltage (LV) single-phase distribution network the voltage profile will change. The connection of single-phase DG units to three-phase distribution networks will not only alter the voltage profile in the connected phase, but also the two other phase voltages will be influenced due to neutral-point shifting and voltage unbalance. The purpose of this paper is to examine the influence of single-phase DG units on the phase voltages, in different circumstances. This will be investigated by performing several simulations. In order to make these detailed simulations, an unbalanced multiphase harmonic power flow method, considering the neutral wire, will be proposed. The presented model uses the iterative forward/backward method. Furthermore, the network is solved by using symmetrical components and the prevalent convergence problems will be tackled in this paper.}},
  author       = {{Degroote, Lieven and Renders, Bert and Meersman, Bart and Vandevelde, Lieven}},
  booktitle    = {{2009 IEEE BUCHAREST POWERTECH, VOLS 1-5}},
  editor       = {{Toma, Lucian and Otomega, Bogdan}},
  isbn         = {{9781424422340}},
  keywords     = {{Symmetrical components,Distributed generation (DG),Radial distribution networks,Voltage unbalance,Neutral-point shifting,Harmonic power flow method,ITERATIVE HARMONIC-ANALYSIS,DISTRIBUTION-SYSTEM ANALYSIS,POWER-FLOW METHOD}},
  language     = {{eng}},
  location     = {{Bucharest, Romania}},
  pages        = {{122--129}},
  publisher    = {{IEEE}},
  title        = {{Neutral-point shifting and voltage unbalance due to single-phase DG units in low voltage distribution networks}},
  year         = {{2009}},
}

Web of Science
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