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Journal : journal of electrical engineering and technology

Analisa Keandalan Sistem Jaringan Distribusi 20 KV Dan Rekonfigurasi Recloser Pada Penyulang Kamal Titiek Suheta; Muhammad Faisal A
Jurnal JEETech Vol. 3 No. 2 (2022): Nomor 2 November
Publisher : Universitas Darul Ulum

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Abstract

The increasing population in the Kamal area has improved the demand for electrical energy needs. Consequently, disruptions to the electricity distribution network may happen, such as blackouts in certain areas. The value of the reliability index will increase and not be in accordance with the standards that have been set. For this reason, this study calculated the reliability values of SAIFI and SAIDI on the Kamal feeder using the RIA (Reliability Index Assessment) method and the recloser reconfiguration using the fuzzy logic method. The simulation results indicated that the SAIFI value gained 6.331 times/year, while SAIDI obtained 20.212 hours/year. Based on recloser reconfiguration, the SAIFI value was earned 4.926 times/year, whereas SAIDI got 15.962 hours/year. The best location was located on line nineteen in group three, producing an output value of 0.461.
Analisa Tahanan Isolasi Pada Transformator Daya 20 MVA Di Gardu Induk ULTG Ende Titiek Suheta; Muhamad Zainudin Abdul Medjid; Khoirul Anwar
Jurnal JEETech Vol. 5 No. 1 (2024): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v5i1.5104

Abstract

Power transformers are the main equipment in the electrical power system that is directly related to the distribution of electricity. One of the most important parts of a power transformer is its insulation system. Over time and operation, the condition of the insulation can deteriorate, which can cause operational failures and damage to the transformer. The purpose of the study was to determine the condition of the quality of insulation resistance in power transformers. The method was a literature study used to deepen the material related to the research title and data collection at the ULTG Ende Substation. The data taken were the results of polarization index, tangent delta and breakdown voltage tests. Based on the analysis results, the polarization index value in 2020 on the primary-ground side was 1.21 and the primary-secondary side was 1.23, but in 2022 it increased to 1.27 and 1.28. The tangent delta calculation results in 2020 on the secondary side on the CLG insulation was 0.64% and in 2022 it was 0.58%, which showed a decrease in insulation (0.5% - 0.7%). For breakdown voltage in 2020 it was 42.2 kV and OLTC 32.4 kV and in 2022 it was 41.1 kV and OLTC was 31.4 kV.