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All Journal Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Teknologi dan Vokasi
Julsam Julsam
Teknik Elektro Politeknik Negeri Padang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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KAJIAN KELAYAKAN SISTEM PENTANAHAN PADA TRAVO AUXILIARY CONTROL BUILDING PADA PEMBANGKIT LISTRIK TENAGA AIR (PLTA) SINGKARAK Yan Putra, Dodi; Asrul, Junaidi; Firmansyah, Firmansyah; Roswaldi, Roswaldi; Julsam, Julsam
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.6-11

Abstract

The grounding system at the Singkarak Hydroelectric Power Plant (PLTA) uses the Grid Grounding system. In this study, we re-checked the grounding value at the Travo Auxilary Building control PLTA Singkarang, where the existing results during commissioning during the initial installation of the Travo Auxilary grounding system obtained a value of 1.22 Ohm. While the results of measurements again to carry out the feasibility of the grounding value on the Auxilary building control transformer are obtained the average value of measurements carried out with the ear tester brand Koriyutsu 4106 with a variable auxiliary electrode distance of 5 meters, 10 meters obtained a grounding value on tarvo 1 Auxilary Building 1 of 1.2 Ohm and also on transformer 2 Auxilary building control obtained a grounding value of 1.2 Ohm while the calculation results obtained a grounding value by calculating the Grid method obtained a grounding value of 0.26 Ohm. So from the results of measurements and calculations, a difference of 0.94 Ohm is obtained. From the measurement results and also the calculations, the grounding of the auxiliary building control transformer is still in very proper condition according to SPLN T5.012. year 2020 and PUIL 2011.
KAJIAN KELAYAKAN SISTEM PENTANAHAN PADA TRAVO AUXILIARY CONTROL BUILDING PADA PEMBANGKIT LISTRIK TENAGA AIR (PLTA) SINGKARAK Yan Putra, Dodi; Asrul, Junaidi; Firmansyah, Firmansyah; Roswaldi, Roswaldi; Julsam, Julsam
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.6-11

Abstract

The grounding system at the Singkarak Hydroelectric Power Plant (PLTA) uses the Grid Grounding system. In this study, we re-checked the grounding value at the Travo Auxilary Building control PLTA Singkarang, where the existing results during commissioning during the initial installation of the Travo Auxilary grounding system obtained a value of 1.22 Ohm. While the results of measurements again to carry out the feasibility of the grounding value on the Auxilary building control transformer are obtained the average value of measurements carried out with the ear tester brand Koriyutsu 4106 with a variable auxiliary electrode distance of 5 meters, 10 meters obtained a grounding value on tarvo 1 Auxilary Building 1 of 1.2 Ohm and also on transformer 2 Auxilary building control obtained a grounding value of 1.2 Ohm while the calculation results obtained a grounding value by calculating the Grid method obtained a grounding value of 0.26 Ohm. So from the results of measurements and calculations, a difference of 0.94 Ohm is obtained. From the measurement results and also the calculations, the grounding of the auxiliary building control transformer is still in very proper condition according to SPLN T5.012. year 2020 and PUIL 2011.
Analysis of Cause of Power Distribution Network Failures Using the Fault Tree Analysis Method at PT PLN Persero ULP Kuranji Azmi, Nurul; Julsam, Julsam; Abadi, Akbar
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.237

Abstract

Electricity is a fundamental necessity in modern life, making the reliability of power distribution systems critical for consistent energy delivery to consumers. PT PLN (Persero) ULP Kuranji is responsible for power distribution in its service area, but frequent disturbances still compromise service quality. This study aims to identify and analyze the root causes of these distribution network failures using the Fault Tree Analysis (FTA) method, specially at ULP Kuranji using 2024 data. Data were gathered through literature review, field observations, and interviews with the Technical Team Leader of ULP Kuranji. The research methodology involved failure identification, fault tree construction, minimum cut set determination, and FTA-based analysis to formulate corrective recommendations. The results show that disturbances are mainly caused by external factors such (vegetation, weather conditions, animals, and third-party interference), an internal issues (component and equipment failures within the Medium Voltage Network (MVN). The analysis identified five basic events as primary root causes: natural disturbances, animal or third-party interference, component failures, material or equipment faults, and installation errors. Recommended mitigation measures include routine maintenance, protective risk inspection, adopting monitoring technologies, and infrastructure/equipment upgrades.
Co-Authors Akbar Abadi, Akbar Asrul, Junaidi Firmansyah Firmansyah Nurul Azmi, Nurul Roswaldi Roswaldi Yan Putra, Dodi