Analysis of Grounding Resistance Value Improvement on 150 kV Glang-Namorambe High Voltage Air Line Tower (SUTT) using three Measurement Points (Three Point Method)
Abstract
Low grounding resistance is an important factor in ensuring the safety and reliability of electric power systems, especially on High Voltage Overhead Lines (SUTT). This study aims to analyze and improve the grounding resistance values on 150 kV SUTT towers on the Glang–Namorambe line using the three-point measurement method. Measurements were conducted to determine the actual condition of the grounding system and evaluate the effectiveness of the improvements made. Initial measurements showed that several towers had resistance values exceeding the maximum PLN standard limit of 10 ohms. To address this, improvements were made by installing additional electrodes, adding conductors, and using ground enhancement materials. After the improvements, remeasurements were conducted for each tower. The analysis results showed that the applied improvement method succeeded in reducing the grounding resistance value significantly, with an average reduction of 40–60%. The final resistance values of all towers were below the specified threshold, so that the grounding system can function properly in protecting equipment and personnel safety from overvoltage disturbances caused by lightning and ground faults.
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References
Noviyanto, P. 2016. Analysis of the Grounding System on SUTT/SUTET at the 150 KV Klaten Substation, Internship II. Yogyakarta. Faculty of Electrical Engineering, Institute of Science & Technology AKPRIND: Yogyakarta
PT.PLN (Persero). 2010. Manual for Operation Limits and Maintenance of High Voltage Power Distribution Equipment (SUTT/SUTET) (Document No.: 10-22/HALUR -PTS/2009). Director's Decree No. 114.Dir/ 2010: Jakarta.
Knight B (2024)An Implementation of IoT Weather Station Based On ESP 32. Scientia Journal, 13(04), 1453-1460.
Siagian. P et al. (2020)Engineering to Mitigate Wind Power Fluctuations Using Vehicle to Grid (V2G). In National Seminar on Computer Technology & Science (SAINTEKS) (Vol. 1, No. 1, pp. 356-361).
Saputro, Nurcahyo Hajar. 2016. Analysis of the High-Resistance Grounding of the 150 KV Transmission Tower in Rembang-Blora and Efforts to Lower It. Faculty of Engineering, Muhammadiyah State University: Surakarta, accessed on July 6, 2017
Siagian P. [2020]The Cost of Islamic Boarding School Electricity Bills is Lowered by Installing Solar Cells on Grid Limiters. Bestari Community Service Journal, 1(8), 895-904.
Siagian, P., Alam, H., Fahreza, M., & Frasasti, RA (2024). Increasing solar panel power with a light concentrator made of aluminum foil. Journal Serambi Engineering, 9(2), 8490–8498.
Siagian, P., Alam, H., Putra, RR, & Tanjung, MMS (2024). Matlab-Based Modeling and Simulation of Temperature and Pressure Parameter Settings for Geothermal Power Plants. Install : Computer Journal, 16(3), 314–321.
Siagian, P., Hamdani;, & Dalimunthe, ME (2012). The Effect of Film Filter Screen on the Output Voltage of Polycrystalline Solar Cells. SITEKIN, Journal of Science, Technology and Industry, 19(2), 2022.
Tharo, Z., Dharmawati, & Alfi Syahri, M. (2020). Combination of solar and wind power to create cheap and eco-friendly energy. IOP Conference Series: Materials Science and Engineering, 725(1).https://doi.org/10.1088/1757-899X/725/1/012140
