Evaluation of the Effect of Capacitor Banks on Energy Efficiency in The 20 kV Distribution System at PT. Unilever Oleochemical Indonesia (UOI)
Abstract
Enhancing energy efficiency in industrial electrical distribution networks is a strategic imperative amid rising power consumption. This study simulates the impact of capacitor bank installation on power factor improvement and power loss reduction within a 20 kV medium-voltage distribution system that reflects the load profile of chemical industries, particularly at PT. Unilever Oleochemical Indonesia (UOI). A numerical simulation method is applied using reactive power calculations across load variations (800–1200 kW), implemented via scientific programming techniques. Results indicate a consistent improvement in power factor from 0.78 to 0.95, alongside a system loss reduction exceeding 700,000 relative units. Validation is conducted through comparative analysis with high-impact literature and national standards. This research offers a substantial contribution as a decision-making foundation for energy efficiency strategies in industrial sectors, promoting the adoption of reactive power compensation technologies.
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References
I. of E. and E. Engineers, IEEE Std 141-1993: IEEE Recommended Practice for Electric Power Distribution for Industrial Plants. IEEE, 1994.
R. M. Utomo, A. P. Wirawan, W. C. Margono, and N. R. Alham, “Design of Automatic Power Factor Correction for Optimization of Electric Energy Consumption,” Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering), vol. 11, no. 1, pp. 10–18, 2024.
A. Rehman, M. Imran-Daud, S. K. Haider, A. U. Rehman, M. Shafiq, and E. T. Eldin, “Comprehensive review of solid state transformers in the distribution system: From high voltage power components to the field application,” Symmetry (Basel), vol. 14, no. 10, p. 2027, 2022.
M. Inci, Ö. Çelik, A. Lashab, K. Ç. Bayındır, J. C. Vasquez, and J. M. Guerrero, “Power system integration of electric vehicles: A review on impacts and contributions to the smart grid,” Applied Sciences, vol. 14, no. 6, p. 2246, 2024.
R. Rahmaniar, A. Junaidi, and R. F. Wijaya, “Renewable Energy Education through Virtual Reality Tours.,” TEM Journal, vol. 14, no. 2, 2025.
Z. Tharo, A. Tarigan, S. Anisah, K. T. Yuda, and P. LabuhanBilik, “Penggunaan Kapasitor Bank Sebagai Solusi Drop Tegangan Pada Jaringan 20 Kv,” in Prosiding Seminar Nasional Teknik UISU (SEMNASTEK), 2020, pp. 82–86.
D. D. N. Brid, Z. Tharo, and P. Wibowo, “Analysis the Effect of Control Valve Opening on Loading Crude Glycerine Water Pump Motor At PT. Unilever Oleochemical Indonesia,” Asian Journal of Environmental Research, vol. 2, no. 1, pp. 29–47, 2025.
O. Ivanov, B. C. Neagu, G. Grigoras, and M. Gavrilas, “Optimal capacitor bank allocation in electricity distribution networks using metaheuristic algorithms. Energies. 2019; 12 (22): 4239.”
T. A. Boghdady and Y. A. Mohamed, “Reactive power compensation using STATCOM in a PV grid connected system with a modified MPPT method,” Ain Shams Engineering Journal, vol. 14, no. 8, p. 102060, 2023.
Z. H. Leghari, M. Kumar, P. H. Shaikh, L. Kumar, and Q. T. Tran, “A critical review of optimization strategies for simultaneous integration of distributed generation and capacitor banks in power distribution networks,” Energies (Basel), vol. 15, no. 21, p. 8258, 2022.
V. P. Widartha, I. Ra, S.-Y. Lee, and C.-S. Kim, “Advancing smart lighting: a developmental approach to energy efficiency through brightness adjustment strategies,” Journal of Low Power Electronics and Applications, vol. 14, no. 1, p. 6, 2024.
M. A. Rezaei et al., “Reliability calculation improvement of electrolytic capacitor banks used in energy storage applications based on internal capacitor faults and degradation,” IEEE Access, vol. 12, pp. 13146–13164, 2024.
F. Tanjung and R. Simatupang, “Kompensasi Daya Reaktif dan Pengaruh Harmonik pada Sistem Distribusi,” Jurnal Teknologi Proses, vol. 14, no. 1, 2021.
B. Suharto, “Simulasi Kapasitor Multibeban dalam Sistem Distribusi 20 kV,” Jurnal Energi Nusantara, vol. 5, no. 3, 2020.
L. Fernandez, J. Garcia, and D. Rivera, “Simulation-based optimization of reactive power compensation in industrial microgrids,” Renewable and Sustainable Energy Reviews, vol. 165, p. 112380, Sep. 2022, doi: 10.1016/j.rser.2022.112380.
D. Saputra and M. Hasan, “Efisiensi Energi pada Industri Oleokimia Berbasis Daya Reaktif,” Jurnal Teknik Energi, 2021.
A. J. Nikishin and M. S. Kharitonov, “Modernization of marine ports electrical power supply systems in the framework of zero-emission strategy,” in IOP Conference Series: Earth and Environmental Science, IOP Publishing, 2021, p. 012018.
K. Fettah et al., “Optimal integration of photovoltaic sources and capacitor banks considering irradiance, temperature, and load changes in electric distribution system,” Sci Rep, vol. 15, no. 1, p. 2670, 2025.
M. Mahdavi, A. Bagheri, and A. de Leles Ferreira Filho, “Impact of Load Profile on the Installation of Capacitor Banks in Conventional and Modern Distribution Grids Considering Provision Cost of Reactive Power,” IEEE Trans Industr Inform, 2025.
A. I. R. Widjaya, I. Haryanto, and M. Muchammad, “PEMODELAN DAN SIMULASI SISTEM ENERGI MENGGUNAKAN OPEN ENERGY MODELLING FRAMEWORK (OEMOF),” JURNAL TEKNIK MESIN, vol. 13, no. 2, pp. 33–40, 2025.
E. A. da Silva, W. M. C. Filho, M. R. Cavallari, and O. H. Ando Junior, “Self-powered system development with organic photovoltaic (OPV) for energy harvesting from indoor lighting,” Electronics (Basel), vol. 13, no. 13, p. 2518, 2024.
R. R. Hossain and R. Kumar, “A distributed-MPC framework for voltage control under discrete time-wise variable generation/load,” IEEE Transactions on Power Systems, vol. 39, no. 1, pp. 809–820, 2023.
