Impact of Reactive Power Compensation on Voltage Profile in Renewable-Integrated Distribution Network
DOI:
https://doi.org/10.58915/aset.v5i2.3521Keywords:
Capacitor Banks, IEEE 14 bus, Reactive Power Compensation, Solar Photovoltaic Integration, Voltage ProfileAbstract
The increasing integration of renewable energy sources, especially solar photovoltaic (PV) systems, poses challenges such as voltage fluctuations and power quality issues in modern power networks. Reactive power support has become an effective solution to enhance voltage stability and minimize system losses. This study investigates the impact of reactive power compensation on the IEEE 14-bus distribution system using ETAP software. The system is modified to include solar PV units at selected buses, and 150 kVAR capacitor banks are optimally placed to provide reactive power support. Load flow analysis and the Voltage Deviation Index (VDI) are used to assess performance improvements. Simulation results show that optimal capacitor placement significantly improves voltage profiles, with all bus voltages maintained within the acceptable range of 0.95 p.u. to 1.05 p.u., while reducing active power losses. The findings highlight the importance of reactive power management to ensure the reliable and efficient operation of distribution networks with high penetration of renewable energy sources, and they align with SDG 7 (Affordable and Clean Energy).
References
[1] Belcher, B., Petry, B. J., Davis, T., Hatipoglu, K. The effects of major solar integration on a 21-bus system: Technology review and PSAT simulations. Conference Proceedings - IEEE SOUTHEASTCON, vol 0 (2017). https://doi.org/10.1109/SECON.2017.7925361
[2] Dhandapani, L., Sreenivasan, P., Murugan, S., Maria, H., Banerjee, S. Enhancing voltage stability in active distribution networks through solar PV integration. Int. J. Power Electron. Drive Syst., vol 16, issue 2 (2025) pp.1137-1146. https://doi.org/10.11591/ijpeds.v16.i2.pp1137-1146
[3] Fernandez, M. I., Go, Y. I. Investigation of power quality issues in 14-bus electrical network with high penetration of renewable generation. Discov. Energy, vol 3, issue 1 (2023) p.10. https://doi.org/10.1007/s43937-023-00023-3
[4] Yu, H., et al. Dynamic network partition and voltage regulation method by PVs considering reactive power compensation benefits. Int. J. Electr. Power Energy Syst., vol 165 (2025)
https://doi.org/10.1016/j.ijepes.2025.110464
[5] Wang, H., et al. Research and engineering practice of var-voltage control in primary and distribution networks considering the reactive power regulation capability of distributed PV systems. Energies, vol 18, issue 8 (2025). https://doi.org/10.3390/en18082135
[6] Gantayet, A. Reactive power support for voltage profile improvement and loss reduction in radial distribution systems with solid-state transformer. 2023 IEEE 3rd International Conference on Sustainable Energy and Future Electric Transportation (SEFET) (2023) pp.1-6. https://doi.org/10.1109/SeFeT57834.2023.10245619
[7] Sachan, S., Mishra, S., Øyvang, T., Bordin, C. Minimizing active power losses and voltage deviations for reactive power planning considering bus vulnerability. Next Res., vol 2, issue 3 (2025) p.100633. https://doi.org/10.1016/j.nexres.2025.100633
[8] Gayatri, M. T. L., Parimi, A. M., Pavan Kumar, A. V. A review of reactive power compensation techniques in microgrids. Renew. Sustain. Energy Rev., vol 81 (2018) pp.1030-1036. https://doi.org/10.1016/j.rser.2017.08.006
[9] Sachan, S., Mishra, S., Øyvang, T., Bordin, C. Reactive power reserve-constrained optimal reactive power dispatch for enhanced voltage stability. Energy Reports, vol 14 (2025) pp.3077-3092. https://doi.org/10.1016/j.egyr.2025.10.001
[10] Majeed, M. Q., Mahdi, A. J., Nawir, M. H. Improving the voltage stability of distribution network using capacitor banks and PV arrays based on OpenDSS. Renew. Energies, Environ. Power Qual. J., vol 2 (2024). https://doi.org/10.24084/reepqj24.370
[11] Rajakumar, P., Balasubramaniam, P. M., Parimalasundar, E., Suresh, K., Aravind, P. Simultaneous photovoltaic distributed generation and capacitor optimization for enhancing performance indices of radial power distribution system. Sci. Rep., vol 15, issue 1 (2025). https://doi.org/10.1038/s41598-025-23274-7
[12] Candra, O., et al. Optimal distribution grid allocation of reactive power with a focus on the particle swarm optimization technique and voltage stability. Sci. Rep., vol 14, issue 1 (2024) p.10889. https://doi.org/10.1038/s41598-024-61412-9
[13] Benidris, M., Sulaeman, S., Tian, Y., Mitra, J. Reactive power compensation for reliability improvement of power systems. Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference, vol 2016-July (2016). https://doi.org/10.1109/TDC.2016.7519910
[14] Mahmoud, M., Faza, A. Reliability improvement of power systems using shunt reactive compensation and distributed generation. Int. J. Appl. Power Eng., vol 12, issue 3 (2023) pp.277-292. https://doi.org/10.11591/ijape.v12.i3.pp277-292
[15] Ćetković, D., Klobučar, G., Komen, V. Analysis of the impact of reactive power compensation on the electric power quality of the LV consumers in distribution networks of various characteristics. 2022 45th Jubilee International Convention on Information, Communication and Electronic Technology (MIPRO) (2022) pp.796-799. https://doi.org/10.23919/MIPRO55190.2022.9803774
[16] Salman, D., Kusaf, M., Elmi, Y. K., Almasri, A. Optimal power systems planning for IEEE-14 bus test system application. (2022). https://doi.org/10.1109/icSmartGrid55722.2022.9848574
[17] Wang, L., Yan, R., Saha, T. K. Voltage regulation challenges with unbalanced PV integration in low voltage distribution systems and the corresponding solution. Appl. Energy, vol 256 (2019) p.113927. https://doi.org/10.1016/j.apenergy.2019.113927
[18] Hiwarkar, D. C. S., Halmare, A. M., Belsare, A. A., Mohriya, N. B., Milmile, R. Load flow analysis on IEEE 14 bus system. Int. J. Res. Appl. Sci. Eng. Technol., vol 10, issue 4 (2022). https://doi.org/10.22214/ijraset.2022.41590
[19] Abdulrazak, W., Jasim, R. S., Qahtan, H. Optimal load flow and short circuit analysis for IEEE-14 bus power system using ETAP. Univ. Thi-Qar J. Eng. Sci., vol 12, issue 2 (2023). https://doi.org/10.31663/tqujes.12.2.455(2022)
[20] Jamahori, H. F., Abdullah, M. P., Ali, A. Impact and evaluation of optimized PV generation in the distribution system with varying load demands. J. Teknol., vol 85, issue 3 (2023) pp.61-73. https://doi.org/10.11113/jurnalteknologi.v85.18684
[21] Sharma, V., Aziz, S. M., Haque, M. H., Kauschke, T. Effects of high solar photovoltaic penetration on distribution feeders and the economic impact. Renew. Sustain. Energy Rev., vol 131 (2020) p.110021. https://doi.org/10.1016/j.rser.2020.110021
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