Medium and Low Voltage Quality Improvement with Shunt Bank Capacitor and Transformer Tap on Morocco Tapung Feeder Duri
DOI:
https://doi.org/10.70609/g-tech.v9i3.7021Keywords:
Distribution transformer, Shunt bank capasitor, Tap of transformator, Voltage drop, Voltage qualityAbstract
Voltage and frequency quality are paramount in 20 kV distribution systems that supply both medium and low voltage feeders. This study explores the significant voltage deficiency in the Maroko Tapung extension of PT PLN (PERSERO), ULP Duri, which dropped 16% from the nominal value. The main objective is to implement a comprehensive voltage restoration strategy to improve the efficiency of the 20 kV distribution system so that it reaches a better standard. The restoration was carried out by setting tap changers, installing shunt capacitor banks, and gradually increasing the tap settings on distribution transformers. Simulation results show a significant improvement in the minimum voltage level across the network, with the lowest voltage on the medium voltage side increasing to 91.69% and on the low voltage side to 90.47%. These outcomes demonstrate that the implemented multi-stage restoration procedures effectively brought the voltage quality within the acceptable limits defined by SPLN 1: 1987 standards, which permit a deviation of +5% and -10% from the nominal voltage. This study highlights the effectiveness of combined tap adjustments and shunt capacitor installation in mitigating voltage drops and ensuring compliance with regulatory standards in distribution systems.
References
Al Firdausi, B. I., Auliq, M. A., & Fitriana, F. (2024). Analisis Kebutuhan Bank Kapasitor Untuk Perbaikan Faktor Daya di PT Beras Rajawali Menggunakan Optimal Capacitor Placement ETAP 19. Jurnal Listrik, Instrumentasi, Dan Elektronika Terapan, 5(1), 39. https://doi.org/10.22146/juliet.v5i1.89376.
Apriliyanto, I., Utomo, R. M., Wirawan, A. P., Hardjanto, A., Hani, F., Mulawarman, U., Daya, A. A., & Tegangan, J. (2023). Analisis Jatuh Tegangan Pada Penyulang S-1 Di Gardu Induk Manggar Sari Balikpapan. Seminar Nasional Inovasi Teknologi Terapan (SNITT).
Arief, A., & Nappu, M. B. (2017). Voltage drop simulation at Southern Sulawesi power system considering composite load model. Proceedings - 2016 3rd International Conference on Information Technology, Computer, and Electrical Engineering, ICITACEE 2016, 169–172. https://doi.org/10.1109/ICITACEE.2016.7892432.
Arlenny, A., Zondra, E., & Zulfahri, Z. (2019). Optimation of Capacitor Bank Placement in Electric Network Using Genetic Algorithm. Journal of Physics: Conference Series, 1351(1). https://doi.org/10.1088/1742-6596/1351/1/012005.
Aryanezhad, M. (2018). Management and coordination of LTC, SVR, shunt capacitor and energy storage with high PV penetration in power distribution system for voltage regulation and power loss minimization. International Journal of Electrical Power and Energy Systems, 100(February), 178–192. https://doi.org/10.1016/j.ijepes.2018.02.015.
Balu, K., & Mukherjee, V. (2020). Siting and Sizing of Distributed Generation and Shunt Capacitor Banks in Radial Distribution System Using Constriction Factor Particle Swarm Optimization. Electric Power Components and Systems, 48(6–7), 697–710. https://doi.org/10.1080/15325008.2020.1797935.
Bao, L., Yuan, Y., Lei, Y., Zhu, Q., Zhang, W., & Zhao, L. (2020). Simulation and Experimental Study of Switching Transient Process of On-load Tap Changer of Converter Transformer. 7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings, 20–23. https://doi.org/10.1109/ICHVE49031.2020.9279460.
Bula, I., Hoxha, V., Shala, M., & Hajrizi, E. (2016). Minimizing non-technical losses with point-to-point measurement of voltage drop between “SMART” meters. IFAC-PapersOnLine, 49(29), 206–211. https://doi.org/10.1016/j.ifacol.2016.11.103.
Buton, S., Krismanto, A. U., Elektro, T., Itn, S., & Indonesia, M. (2023). Penempatan Kapasitor Bank OCP Untuk Meningkatkan Profil Tegangan di Jaringan Distribusi PT.PLN (PERSERO) Area Ambon Rayon Namlea. Magnetika, 07(2), 7–17.
Chen, L., & Li, H. (2016). Optimized reactive power supports using transformer tap stagger. IEEE Transactions on Smart Grid, 1–10.
Chou, M. H., Su, C. L., Lee, Y. C., Chin, H. M., Parise, G., & Chavdarian, P. (2017). Voltage-drop calculations and power cable designs for harbor electrical distribution systems with high voltage shore connection. IEEE Transactions on Industry Applications, 53(3), 1807–1814. https://doi.org/10.1109/TIA.2016.2646658.
Darmawan, H., Kurnianto, R., Gianto, R., Yusuf, I., & Purwoharjono. (2023). Analisis Sistem Jaringan Tegangan Menengah 20 kV di Kawasan Industri Kelapa Sawait PT. Bumitama Gunajaya Agro. Jurnal Darma Agung, 30(3), 414–429.
Gokbayrak, K., & Avci, H. (2020). A voltage drop limited decentralized electric power distribution network. Computers and Operations Research, 118, 104907. https://doi.org/10.1016/j.cor.2020.104907.
Handayani, F. I., Yuningtyastuti, & Nugroho, A. (2016). Analisis Jatuh Tegangan Dan Rugi Daya Pada Jaringan Tegangan Rendah Menggunakan Software Etap 12.6.0. Transient: Jurnal Ilmiah Teknik Elektro, 5(1), 56–61. https://ejournal3.undip.ac.id/index.php/transient/article/view/11888.
Husin, F., & Sirait, B. (2022). Quality Improvement of 20 KV Voltage Profile Of PT. PLN (Persero) Ketapang According to SPLN No.72 Of 1987. Elkha, 14(1), 7. https://doi.org/10.26418/elkha.v14i1.48511.
Jung, T. H., Gwon, G. H., Kim, C. H., Han, J., Oh, Y. S., & Noh, C. H. (2018). Voltage Regulation Method for Voltage Drop Compensation and Unbalance Reduction in Bipolar Low-Voltage DC Distribution System. IEEE Transactions on Power Delivery, 33(1), 141–149. https://doi.org/10.1109/TPWRD.2017.2694836.
Kim, Y. J., Park, H. W., Hyun, S. D., Kim, H. J., Kim, K. Do, Lee, Y. H., Moon, T., Lee, Y. Bin, Park, M. H., & Hwang, C. S. (2017). Voltage Drop in a Ferroelectric Single Layer Capacitor by Retarded Domain Nucleation. Nano Letters, 17(12), 7796–7802. https://doi.org/10.1021/acs.nanolett.7b04008.
Ku, T. T., Lin, C. H., Chen, C. S., & Hsu, C. T. (2019). Coordination of transformer on-load tap changer and pv smart inverters for voltage control of distribution feeders. IEEE Transactions on Industry Applications, 55(1), 256–264. https://doi.org/10.1109/TIA.2018.2870578.
Lee, H. O., Kim, D. J., Kim, C. S., & Kim, B. (2023). Optimal Voltage Control Method for a Step Voltage Regulator Considering the Under-Load Tap Changer in a Distribution System Interconnected with a Renewable Energy Source. Energies, 16(16). https://doi.org/10.3390/en16166039.
Lei, E., Yin, X., Zhang, Z., & Chen, Y. (2018). An Improved Transformer Winding Tap Injection DSTATCOM Topology for Medium-Voltage Reactive Power Compensation. IEEE Transactions on Power Electronics, 33(3), 2113–2126. https://doi.org/10.1109/TPEL.2017.2698207.
Li, C., Disfani, V. R., Haghi, H. V., & Kleissl, J. (2020). Coordination of OLTC and smart inverters for optimal voltage regulation of unbalanced distribution networks. Electric Power Systems Research, 187. https://doi.org/10.1016/j.epsr.2020.106498.
Li, Z., Li, Q., Wu, Z., Yu, J., & Zheng, R. (2018). A Fault Diagnosis Method for on Load Tap Changer of Aerospace Power Grid Based on the Current Detection. IEEE Access, 6(c), 24148–24156. https://doi.org/10.1109/ACCESS.2018.2825219.
Liliana, Aini, Z., & Bandri, S. (2024). Voltage Quality Improvement with Shunt Bank Capasitor and Transformer Tap. Engineering and Technology Journal, 09(08), 4863–4870. https://doi.org/10.47191/etj/v9i08.35.
Mosbah, M., Mohammedi, R. D., Arif, S., & Hellal, A. (2017). Optimal of shunt capacitor placement and size in Algerian distribution network using particle swarm optimization. Proceedings of 2016 8th International Conference on Modelling, Identification and Control, ICMIC 2016, 192–197. https://doi.org/10.1109/ICMIC.2016.7804297.
Nurrahmat, R., Karim, S., Teknik, F., Kalimantan, U. I., Profil, P., Sistem, T., Listrik, T., Menggunakan, S., Perhitungan, A., Daya, S., Dengan, E., Kurva, P., Susut, P., Listrik, E., Pln, P., Mode, M. F., Analysis, E., Zondra, E., Kecepatan, P., … Energi, D. (2020). Pengaruh Perubahan Tap Trafo Gardu Distribusi Terhadap Susut Energi ( Kwh ) Pada Gardu Cbd-0693 ( Tbr-0020 ) Di Pt . Pln ( Persero ). 0693, 1–2.
Rosihan, A. N., Wartana, I. M., & Sulistiawati, I. B. (2023). Optimasi Penempatan Kapasitor Untuk Memperbaiki Profil Tegangan dan Mereduksi Rugi-Rugi Daya pada Jaringan Distribusi 20kV Penyulang Lambitu , Kalampa , dan. In Institut Teknologi Nasional Malang. http://eprints.itn.ac.id/id/eprint/13238.
Sadeghian, O., Oshnoei, A., Tarafdar-Hagh, M., & Khezri, R. (2021). A clustering-based technoeconomic analysis for wind farm and shunt capacitor allocation in radial distribution systems. International Transactions on Electrical Energy Systems, 31(1), 1–17. https://doi.org/10.1002/2050-7038.12708.
Seo, J., Ma, H., & Saha, T. K. (2017). A Joint Vibration and Arcing Measurement System for Online Condition Monitoring of Onload Tap Changer of the Power Transformer. IEEE Transactions on Power Delivery, 32(2), 1031–1038. https://doi.org/10.1109/TPWRD.2016.2531186.
Shekhar, A., Ramirez-Elizondo, L., Bandyopadhyay, S., Mackay, L., & Bauera, P. (2018). Detection of series arcs using load side voltage drop for protection of low voltage DC Systems. IEEE Transactions on Smart Grid, 9(6), 6288–6297. https://doi.org/10.1109/TSG.2017.2707438.
Subhan, Fauzi, Asyadi, T. M., Muliadi, Syukri, & Masrurha, F. (2023). Perbaikan Tegangan Ujung Pada Jaringan Distribusi 20 kV Di GH Tangse ULP Beureunuen. JTT (Jurnal Teknologi Terpadu), 11(1), 40–47. https://doi.org/10.32487/jtt.v11i1.1570.
Sumarno, R. N., Muntasiroh, L., & Mariani, D. (2022). Pengaruh Setting Tap Transformator Terhadap Profil Tegangan Pada Jaringan IEEE 14 Bus. Jambura Journal of Electrical and Electronics Engineering, 4(2), 154–158. https://doi.org/10.37905/jjeee.v4i2.14324.
Utomo, T., Hasanah, R. N., & Madjid, M. F. (2017). Single-loop optimization for losses minimization in medium- voltage power distribution system. International Journal on Advanced Science, Engineering and Information Technology, 7(4), 1347–1352. https://doi.org/10.18517/ijaseit.7.4.3135.
Zeinalzadeh, A., Mohammadi, Y., & Moradi, M. H. (2015). Optimal multi objective placement and sizing of multiple DGs and shunt capacitor banks simultaneously considering load uncertainty via MOPSO approach. International Journal of Electrical Power and Energy Systems, 67, 336–349. https://doi.org/10.1016/j.ijepes.2014.12.010.
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