Enhance the voltage drop in the end costumer of PT. PLN ULP 50 Kota using insertion transformer
Keywords:
Transformer, End Voltage, Drop Voltage, Repair, Insertion TransformerAbstract
Loading that exceeds the capacity of the transformer if left unchecked will damage the transformer itself; apart from that, it can also cause drop voltage along the conductor, which causes electricity services to customers to be disrupted, especially at the customer end. The results of research at PT PLN (Persero) ULP 50 Kota Suliki Service Office revealed that of the 108 existing transformers, the GD 175 Kasiak Rampung transformer experienced overload with a percentage of 99%, and the end voltage measurement was 177 volts. This figure does not comply with the standards set by PLN. An insert transformer was built as an improvement effort so that the loading percentage decreased to 45% and the end voltage became 277 volts. This effort provides benefits, namely improving the quality of customer service, increasing electricity sales, reducing ENS if there are maintenance efforts, and improving the company's image.
Downloads
References
[1] M. Hariansyah, “Teknik Pemeliharaan Transformator Distribusi Pada Gardu Tiang Portal,” Elektriese, vol. 4, no. 2, pp. 1–14, 2019
[2] A. H. Khawaja, W. Ateeq, D. Cai, W. Amin and Q. Huang, "A Novel Method of Transformer Overloading Detection by Magnetic Flux Leakage Measurements," IEEE Transactions on Instrumentation and Measurement, vol. 72, pp. 1-9, 2023, Art no. 6008509, doi: 10.1109/TIM.2023.3300432.
[3] J. A. Jardini, J. L. P. Brittes, L. C. Magrini, M. A. Bini and J. Yasuoka, "Power transformer temperature evaluation for overloading conditions," IEEE Transactions on Power Delivery, vol. 20, no. 1, pp. 179-184, Jan. 2005, doi: 10.1109/TPWRD.2004.835433.
[4] H. Wang, T. Wang, M. Xue, J. Sun, W. Xiong and Y. Hou, "Research on Overload Capability of Dry Distribution Transformer Based on Hot Spot Temperature Model," 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), Harbin, China, 2019, pp. 1-5, doi: 10.1109/ICEMS.2019.8921739.
[5] GAN et al., "Life Cycle Cost Analysis of Distribution Transformers Considering High Overload Capacity and Vegetable Insulating Oil," 2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia), Chengdu, China, 2019, pp. 38-42, doi: 10.1109/ISGT-Asia.2019.8881165.
[6] P. Harahap, M. Adam, and A. Prabowo, “Analisis Penambahan Trafo Sisip Distribusi 20kv Mengurangi Beban Overload Dan Jatuh Tegangan Pada Trafo B1 11 Rayon Tanah Jawa Dengan Simulasi ETAP,” RELE (Rekayasa Elektrikal dan Energi) : Jurnal Teknik Elektro, vol. 1, no. 2, pp. 1–8, 2019.
[7] G. De Carne, G. Buticchi, M. Liserre, P. Marinakis and C. Vournas, "Coordinated frequency and Voltage Overload Control of Smart Transformers," 2015 IEEE Eindhoven PowerTech, Eindhoven, Netherlands, 2015, pp. 1-5, doi: 10.1109/PTC.2015.7232799.
[8] Q. Wu, Z. Chen, H. Su and D. Zhang, "Heavy Overload Forecasting of Distribution Transformers Based on XGBoost," 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), Macao, China, 2019, pp. 1-5, doi: 10.1109/APPEEC45492.2019.8994336.
[9] B. Wei, Y. Wang, S. Ren, R. Wang and Y. Xu, "Overload Investigation on Retrofilling Mineral Oil Distribution Transformer with Soybean-Based Natural Ester," 2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE), Beijing, China, 2020, pp. 1-4, doi: 10.1109/ICHVE49031.2020.9279714.
[10] A. A. Taheri, A. Abdali and A. Rabiee, "A Novel Model for Thermal Behavior Prediction of Oil-Immersed Distribution Transformers With Consideration of Solar Radiation," IEEE Transactions on Power Delivery, vol. 34, no. 4, pp. 1634-1646, Aug. 2019, doi: 10.1109/TPWRD.2019.2916664.
[11] S. Zhang, "Evaluation of Thermal Transient and Overload Capability of High-Voltage Bushings With ATP," IEEE Transactions on Power Delivery, vol. 24, no. 3, pp. 1295-1301, July 2009, doi: 10.1109/TPWRD.2009.2014484.
[12] L. C. Nichols, "Effect of Overloads on Transformer Life," Transactions of the American Institute of Electrical Engineers, vol. 53, no. 12, pp. 1616-1621, Dec. 1934, doi: 10.1109/T-AIEE.1934.5056573.
[13] G. B. Kumbhar, S. M. Mahajan and W. L. Collett, "Reduction of Loss and Local Overheating in the Tank of a Current Transformer," IEEE Transactions on Power Delivery, vol. 25, no. 4, pp. 2519-2525.
[14] F. J. Vogel and T. K. Sloat, "Emergency overloads (or oil-insulated transformers," Electrical Engineering, vol. 61, no. 9, pp. 669-673, Sept. 1942, doi: 10.1109/EE.1942.6436525.
[15] S. C. Ross, G. Vuylsteke and J. L. Mathieu, "Effects of Load-Based Frequency Regulation on Distribution Network Operation," IEEE Transactions on Power Systems, vol. 34, no. 2, pp. 1569-1578, March 2019, doi: 10.1109/TPWRS.2018.2879464.
[16] Y. O. Assolami, A. Gaouda and R. El-shatshat, "Impact on Voltage Quality and Transformer Aging of Residential Prosumer Ownership of Plug-In Electric Vehicles: Assessment and Solutions," IEEE Transactions on Transportation Electrification, vol. 8, no. 1, pp. 492-509, March 2022, doi: 10.1109/TTE.2021.3089460.
[17] R. Harahap and J. A. Pakpahan, “Analisa Pengukuran Ratio Transformator Daya yang Menggunakan on Load Tap Changer (Aplikasi Pada Transformator Daya Paya Geli PLN Medan),” Buletin Utama Teknik, vol. 13, no. 3, pp. 1410–4520, 2018.
[18] A. Tanjung and . A., “Analisis Kinerja Transformator Distribusi Rusunawa Universitas Lancang Kuning Pekanbaru,” SainETIn (Jurnal Sain, Energi, Teknologi & Industri), vol. 1, no. 1, pp. 33–40, 2017, doi: 10.31849/sainetin.v1i1.170.
[19] N. M. Seniari, M. N. Fadli, and I. M. Ginarsa, “Analisis Rencana Pemasangan Transformator Sisipan pada Saluran Transformator Distribusi Penyulang Pagutan (Studi Kasus: Transformator Distribusi AM097 Di Jalan Banda Seraya, Pagesangan, Kota Mataram),” Dielektrika, vol. 7, no. 1, p. 56, 2020, doi: 10.29303/dielektrika.v7i1.226.
[20] PT. PLN (Persero), SPLN No. 50 Tahun 1977, Spesifikasi Transformator Distribusi.