Evaluation of the Impact of Rooftop Solar Power on the Power Quality of Vietnam Urban Distribution Networks according to Relevant Vietnamese and IEEE and IEC Standards


  • Hoang-Giang Vu Faculty of Electrical Engineering, Electric Power University, Vietnam
  • Duc Nguyen Huu Faculty of Energy Technology, Electric Power University, Vietnam https://orcid.org/0000-0003-3135-287X
Volume: 14 | Issue: 3 | Pages: 14685-14691 | June 2024 | https://doi.org/10.48084/etasr.7099


The goal of reducing greenhouse gas emissions and energy transition has created many favorable conditions to promote solar power generation technology. However, from a technical perspective, integrating solar power into the power grid poses many challenges in grid operation. This study investigates the impact of rooftop solar power in terms of power quality in the urban distribution grid in Vietnam. The current study simulated a typical low-voltage distribution grid with single-phase and three-phase loads to evaluate important power quality issues, such as Total Harmonic Distortion (THD) of voltage and current, voltage unbalance, and voltage rises. A grid simulation grid was developed in Matlab/Simulink under different conditions for the penetration level of solar power and the daily variation of loads. These indexes were compared with the limits specified in Vietnamese standards and the relevant international standards of IEEE and IEC. Compliance with the provisions of these standards was provided, even in the case of solar power systems with a high level of penetration into Vietnam's urban distribution grid.


harmonic distortion, penetration level, photovoltaic distributed generation, power quality, voltage unbalance, voltage rise, rooftop solar, urban distribution network


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W. Hemetsberger, T. Cruz-Capellan, and M. Schmela, "Global Market Outlook For Solar Power 2023 - 2027," SolarPower Europe, Jun. 2023.

V. Kapsalis et al., "Critical assessment of large-scale rooftop photovoltaics deployment in the global urban environment," Renewable and Sustainable Energy Reviews, vol. 189, Jan. 2024, Art. no. 114005.

M. A. Khan et al., "Experimental and simulation analysis of grid-connected rooftop photovoltaic system for a large-scale facility," Sustainable Energy Technologies and Assessments, vol. 53, Oct. 2022, Art. no. 102773.

M. Karimi, H. Mokhlis, K. Naidu, S. Uddin, and A. H. A. Bakar, "Photovoltaic penetration issues and impacts in distribution network – A review," Renewable and Sustainable Energy Reviews, vol. 53, pp. 594–605, Jan. 2016.

A. Colmenar-Santos, A. R. Linares-Mena, E. L. Molina-Ibáñez, E. Rosales-Asensio, and D. Borge-Diez, "Technical challenges for the optimum penetration of grid-connected photovoltaic systems: Spain as a case study," Renewable Energy, vol. 145, pp. 2296–2305, Jan. 2020.

T. Aziz and N. Ketjoy, "PV Penetration Limits in Low Voltage Networks and Voltage Variations," IEEE Access, vol. 5, pp. 16784–16792, Aug. 2017.

L. Mukwekwe, C. Venugopal, and I. E. Davidson, "A review of the impacts and mitigation strategies of high PV penetration in low voltage networks," in 2017 IEEE PES PowerAfrica, Accra, Ghana, Jul. 2017, pp. 274–279.

O. Gandhi, D. S. Kumar, C. D. Rodríguez-Gallegos, and D. Srinivasan, "Review of power system impacts at high PV penetration Part I: Factors limiting PV penetration," Solar Energy, vol. 210, pp. 181–201, Nov. 2020.

D. Sarkar and P. K. Sadhu, "A Novel Fixed BIPV Array for Improving Maximum Power with Low Mismatch Losses Under Partial Shading," IETE Journal of Research, vol. 69, no. 11, pp. 8423–8443, Nov. 2023.

S. S. Refaat, H. Abu-Rub, A. P. Sanfilippo, and A. Mohamed, "Impact of grid-tied large-scale photovoltaic system on dynamic voltage stability of electric power grids," IET Renewable Power Generation, vol. 12, no. 2, pp. 157–164, 2018.

O. Babacan, W. Torre, and J. Kleissl, "Siting and sizing of distributed energy storage to mitigate voltage impact by solar PV in distribution systems," Solar Energy, vol. 146, pp. 199–208, Apr. 2017.

Y. P. Agalgaonkar, B. C. Pal, and R. A. Jabr, "Distribution Voltage Control Considering the Impact of PV Generation on Tap Changers and Autonomous Regulators," IEEE Transactions on Power Systems, vol. 29, no. 1, pp. 182–192, Jan. 2014.

M. M. Haque and P. Wolfs, "A review of high PV penetrations in LV distribution networks: Present status, impacts and mitigation measures," Renewable and Sustainable Energy Reviews, vol. 62, pp. 1195–1208, Sep. 2016.

C. L. Masters, "Voltage rise: the big issue when connecting embedded generation to long 11 kV overhead lines," Power Engineering Journal, vol. 16, no. 1, pp. 5–12, Oct. 2002.

W.L. Hsieh et al., "Impact of PV generation to voltage variation and power losses of distribution systems," in 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), Weihai, China, Jul. 2011, pp. 1474–1478.

R. Yan and T. K. Saha, "Voltage Variation Sensitivity Analysis for Unbalanced Distribution Networks Due to Photovoltaic Power Fluctuations," IEEE Transactions on Power Systems, vol. 27, no. 2, pp. 1078–1089, Feb. 2012.

A. Chidurala, "High penetration of PV systems in low voltage distribution networks: investigation of power quality challenges and mitigation," Ph.D. dissertation, The University of Queensland, Brisbane, Australia, 2016.

A. Kharrazi, V. Sreeram, and Y. Mishra, "Assessment techniques of the impact of grid-tied rooftop photovoltaic generation on the power quality of low voltage distribution network - A review," Renewable and Sustainable Energy Reviews, vol. 120, Mar. 2020, Art. no. 109643.

P. González, E. Romero-Cadaval, E. González, and M. A. Guerrero, "Impact of Grid Connected Photovoltaic System in the Power Quality of a Distribution Network," in Technological Innovation for Sustainability, Costa de Caparica, Portugal, Feb. 2011, pp. 466–473.

N. B. G. Brinkel et al., "Impact of rapid PV fluctuations on power quality in the low-voltage grid and mitigation strategies using electric vehicles," International Journal of Electrical Power & Energy Systems, vol. 118, Jun. 2020, Art. no. 105741.

M. Zadehbagheri and M. Javad Kiani, "A new method for online evaluation of the effects of PV panels and comparison with MVDI in electrical power distribution networks," Renewable Energy Focus, vol. 44, pp. 106–123, Mar. 2023.

H. H. H. de Silva, D. K. J. S. Jayamaha, and N. W. A. Lidula, "Power Quality Issues Due to High Penetration of Rooftop Solar PV in Low Voltage Distribution Networks: A Case Study," in 2019 14th Conference on Industrial and Information Systems (ICIIS), Kandy, Sri Lanka, Apr. 2020, pp. 395–400.

S. Seme, N. Lukač, B. Štumberger, and M. Hadžiselimović, "Power quality experimental analysis of grid-connected photovoltaic systems in urban distribution networks," Energy, vol. 139, pp. 1261–1266, Nov. 2017.

V. V. Prabhakaran and A. Singh, "Enhancing Power Quality in PV-SOFC Microgrids Using Improved Particle Swarm Optimization," Engineering, Technology & Applied Science Research, vol. 9, no. 5, pp. 4616–4622, Oct. 2019.

D. N. Huu and V. N. Ngoc, "A Two-Level Desired Load Profile Tracking Algorithm for Electric Two-Wheeler Charging Stations," Engineering, Technology & Applied Science Research, vol. 11, no. 6, pp. 7814–7823, Dec. 2021.

V. N. Ngoc and D. N. Huu, "Optimal Valley-Filling Algorithm for Electric Two-wheeler Charging Stations," Engineering, Technology & Applied Science Research, vol. 14, no. 1, pp. 13072–13077, Feb. 2024.

K. H. Hussein, I. Muta, T. Hoshino, and M. Osakada, "Maximum photovoltaic power tracking: an algorithm for rapidly changing atmospheric conditions," IEE Proceedings - Generation, Transmission and Distribution, vol. 142, no. 1, pp. 59–64, Jan. 1995.

H. G. Vu and T. T. H. Ma, "A Study of Inverter Open-Circuit Fault in Grid Connected Photovoltaic Systems: Influence on Output Power and Detection Method," International Review on Modelling and Simulations (IREMOS), vol. 15, no. 3, pp. 154–161, Jun. 2022.

H. G. Vu and D. N. Huu, "Impact of Rooftop Photovoltaic System on the Voltage of Urban Distribution Network: A Case Study in Vietnam," in 2023 Asia Meeting on Environment and Electrical Engineering (EEE-AM), Hanoi, Vietnam, Nov. 2023, pp. 1–6.

Circular 39/2022/TT-BCT amend Circular 25/2016/TT-BCT, Circular 39/2015/TT-BCT and Circular 30/2019/TT-BCT, 39/2022/TT-BCT, The Ministry of Industry and Trade, Vietnam, 2022.

Recommended Practice for Monitoring Electric Power Quality, 1159-2019, IEEE, Aug. 2019.

IEC standard voltages, 60038:2009, IEC, 2009.


How to Cite

H.-G. Vu and D. N. Huu, “Evaluation of the Impact of Rooftop Solar Power on the Power Quality of Vietnam Urban Distribution Networks according to Relevant Vietnamese and IEEE and IEC Standards”, Eng. Technol. Appl. Sci. Res., vol. 14, no. 3, pp. 14685–14691, Jun. 2024.


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