Analysis of Voltage Profiles, Unbalance Voltages and Phase Balance Optimization of Single-Phase Customer and Photovoltaic Connection at Real Low Voltage Feeder

Mario Ostojić; Adnan Bosović

doi:10.2478/bhee-2023-0019

Abstract

Voltage unbalance is common issue encountered in low voltage distribution networks, caused by uneven allocation of single-phase customers among phases. This paper analyses part of real low voltage distribution network in Bosnia and Herzegovina. The impact of single-phase customers and single-phase connected micro photovoltaic power plants (MPPP-s) were analysed. To reduce unbalance and improve voltage profiles, Phase Balance Optimization toolbox in DIgSILENT PowerFactory software was performed in six scenarios with different distribution of customers and different percentage of penetration of MPPS-s. The aim was to find method with least number of changes in customer and photovoltaic phase connection that fits within defined limits of voltage variations and voltage unbalance of European standard for power quality (EN 50160). Conclusion is that MPPP-s cause voltage increases in the network, as well as an increase in voltage unbalance, but these effects can be mitigated by proper distribution of customer loads and MPPS-s among phases.

References

M.A.S. Masoum and E.F. Fuchs, Power Quality in Power Systems and Electrical Machines (2nd edition), Elsevier, 2008
Search in Google Scholar Back to article
B.W. Kennedy, Power Quality Primer, McGraw-Hill, 2000
Search in Google Scholar Back to article
M. Begovic, I. Kim, D. Novosel, J. R. Aguero, and A. Rohatgi, “Integration of photovoltaic distributed generation in the power distribution grid,” in Proc. 2011, pp. 1977-1986.
Search in Google Scholar Back to article
M. M. Begovic and I. Kim, “Distributed renewable PV generation in urban distribution networks,” 2011 IEEE/PES Power Systems Conference and Exposition, 1-3
Search in Google Scholar Back to article
S. Heslop, I. MacGill, J. Fletcher, “Maximum PV generation estimation method for residential low voltage feeders”, Sustain. Energy Grids Netw. 2016, 7, 58–69.
Search in Google Scholar Back to article
C. Tie, C. Gan, “Impact of grid-connected residential PV systems on the Malaysia low voltage distribution network”, 2013 IEEE 7th Int. Power Engineering and Optimization Conf. (PEOCO), Langkawi Island, Malaysia, 3–4 June 2013, pp. 670–675
Search in Google Scholar Back to article
T. Alquthami, R. Sreerama Kumar, and A. A. Shaikh, “Mitigation of voltage due to high solar PV penetration in Saudi distribution network,” Electr. eng. (Berl., Print), vol. 102, no. 2, pp. 881–890, 2020.
Search in Google Scholar Back to article
R. Tonkoski, D. Turcotte, and T. H. M. El-Fouly, “Impact of high PV penetration on voltage profiles in residential neighborhoods,” IEEE Trans. Sustain. Energy, vol. 3, no. 3, pp. 518–527, Jul. 2012.
Search in Google Scholar Back to article
A. Woyte, V. Van Thong, R. Belmans, and J. Nijs, “Voltage fluctuations on distribution level introduced by photovoltaic systems,” IEEE Trans. Energy Convers., vol. 21, no. 1, pp. 202–209, 2006.
Search in Google Scholar Back to article
Padole, Nivedita and Dr.R.M. Moharil, “Effect of PV Penetration on Voltage Profile of Three-Phase Unbalanced Radial Distribution Network.” International Journal of Renewable Energy Research (2023): n. pag.
Search in Google Scholar Back to article
F. Shahnia, A. Ghosh, G. Ledwich and F. Zare, “Voltage Unbalance reduction in low voltage distribution networks with rooftop PVs,” 2010 20th Australasian Universities Power Engineering Conference, Christchurch, New Zealand, 2010, pp. 1-5.
Search in Google Scholar Back to article
K. H. Chua, J. Wong, Y. S. Lim, P. Taylor, E. Morris, and S. Morris, “Mitigation of Voltage Unbalance in Low Voltage Distribution Network with High Level of Photovoltaic System”, Energy Procedia, vol. 12, 2011.
Search in Google Scholar Back to article
R. Charoenwattana and U. Sangpanich, “Analysis of Voltage Unbalance and Energy Loss in Residential Low Voltage Distribution Systems with Rooftop Photovoltaic Systems,” January 2020E3S Web of Conferences 190(1):00033, DOI: 10.1051/e3sconf/202019000033
Search in Google Scholar Back to article

Analysis of Voltage Profiles, Unbalance Voltages and Phase Balance Optimization of Single-Phase Customer and Photovoltaic Connection at Real Low Voltage Feeder

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