Phase Balance Optimization of Customers and Electric Vehicles in a Real Low Voltage Electricity Distribution Network

Nalo, Naida; Bosović, Adnan; Musić, Mustafa

doi:10.2478/bhee-2022-0014

Abstract

Phase unbalance is a common issue encountered in LV electricity distribution networks, caused by uneven allocation of single-phase loads among phases. This paper analyses a part of a real LV distribution network, situated in Bosnia and Herzegovina. The impact of single-phase customers and single-phase charging of electric vehicles was analysed. To reduce unbalance and improve the voltage profiles, Phase Balance Optimization in DIgSILENT PowerFactory software was performed in six scenarios with different customer and electric vehicle unbalance. The goal was to find a method with the least number of changes in the customer and electric vehicle phase connection that fits within defined limits of voltage variations and voltage unbalance of a European norm for power quality (EN 50160). Results showed that all analysed scenarios were improved, with reference to voltage variation and voltage unbalance values, and were found acceptable by the limits from standard EN 50160.

References

[1] M.A.S. Masoum and E.F. Fuchs, Power Quality in Power Systems and Electrical Machines (2^nd edition), Elsevier, 2008
Search in Google Scholar Back to article
[2] B.W. Kennedy, Power Quality Primer, McGraw-Hill, 2000
Search in Google Scholar Back to article
[3] H.F. Farahani, “Improving voltage unbalance of low-voltage distribution networks using plug-in electric vehicles,” Journal of Cleaner Production, Volume 148, 201710.1016/j.jclepro.2017.01.178
Search in Google Scholar Back to article
[4] R. Saravanan, G.P. Kannayeram and R. Muniraj, “Mitigating unbalance and improving voltage considering higher penetration of EVs and DG using hybrid optimization technique,” International Transactions on Electrical Energy Systems, 2021; 31 (11)10.1002/2050-7038.13119
Search in Google Scholar Back to article
[5] M. R. Islam, H. Lu, J. Hossain, M. R. Islam and L. Li, “Multiobjective Optimization Technique for Mitigating Unbalance and Improving Voltage Considering Higher Penetration of Electric Vehicles and Distributed Generation,” in IEEE Systems Journal, vol. 14, no. 3, pp. 3676-3686, 202010.1109/JSYST.2020.2967752
Search in Google Scholar Back to article
[6] R. Saravanan, S. Kaliappan, V. Jayaprakasan and P. Maniraj, “A hybrid strategy for mitigating unbalance and improving voltage considering higher penetration of electric vehicles and distributed generation,” Sustainable Cities and Society, Volume 76, 202210.1016/j.scs.2021.103489
Search in Google Scholar Back to article
[7] M. R. Kaveh, R.A. Hooshmand and S. M. Madani, Simultaneous Optimization of Re-phasing, Reconfiguration and DG Placement in Distribution Networks using BF-SD Algorithm, Applied Soft Computing Journal, vol. 62, pp. 1044-1055, Elsevier 201710.1016/j.asoc.2017.09.041
Search in Google Scholar Back to article
[8] G. Grigoras, M. Gavrilas, I. Tristiu and C. Bulac, “An Efficient Method to optimal Phase load balancing in Low Voltage Distribution Network,” 2019 IEEE International Conference on ENERGY and ENVIRONMENT (CIEM)10.1109/CIEM46456.2019.8937577
Search in Google Scholar Back to article
[9] A. Raminfard, S.M. Shahrtahs, T. Herizchi and H. Khoskhoo, “Long-term Load Balancing Program in LV Distribution Networks,” 2012 IEEE International Power Engineering and Optimization conference (PEOCO)10.1109/PEOCO.2012.6230864
Search in Google Scholar Back to article
[10] O. Ivanov, B. C. Neagu, M. Gavrilas, G. Grigoras and C.V. Sfintes, “Phase Load Balancing in Low voltage Distribution Networks using Metaheuristic Algorithms,” 2019 IEEE International Conference on Electromechanical and Energy Systems (SIELMEN)10.1109/SIELMEN.2019.8905900
Search in Google Scholar Back to article
[11] M.R. Kikhavani, A. Hajizadeh and A. Shahirinia “Charging coordination and load balancing of plug-in electric vehicles in unbalanced low-voltage distribution systems”, IET Generation Transmission Distribution, 14: 389-399, 202010.1049/iet-gtd.2019.0397
Search in Google Scholar Back to article
[12] F. Shahnia, P. J. Wolfs and A. Ghosh, “Voltage Unbalance Reduction in Low Voltage Feeders by Dynamic Switching of Residential Customers Among Three Phases,” in IEEE Transactions on Smart Grid, vol. 5, no. 3, pp. 1318-1327, 201410.1109/TSG.2014.2305752
Search in Google Scholar Back to article
[13] W.G. Chaminda Bandara, G.M.R.I. Godaliyadda, M.P.B. Ekanayake and J.B. Ekanayake, “Coordinated photovoltaic re-phasing: A novel method to maximize renewable energy integration in low voltage networks by mitigating network unbalances,” Applied Energy, Elsevier, Volume 280,202010.1016/j.apenergy.2020.116022
Search in Google Scholar Back to article
[14] N. Nalo, A. Bosović and M. Musić, “Impact of Electric Vehicle Charging on Voltage Profiles and Unbalance on Low Voltage,” Advanced Technologies, Systems, and Applications IV – Proceedings of the International Symposium on Innovative and Interdisciplinary Applications of Advanced Technologies (IAT 2019), vol 83. Springer, 201910.1007/978-3-030-24986-1_5
Search in Google Scholar Back to article
[15] European standard, Voltage characteristic of electricity supplied by public electricity networks (EN 50160) (2011)
Search in Google Scholar Back to article

Phase Balance Optimization of Customers and Electric Vehicles in a Real Low Voltage Electricity Distribution Network

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