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All Journal ARMATUR : Artikel Teknik Mesin dan Manufaktur EPSILON: Journal of Electrical Engineering and Information Technology
Christiono
Institut Teknologi PLN
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis Kemampuan Minyak Isolasi Transformator Daya Merek Unindo Dengan Pengujian Dissolved Gas Analysis dan Breakdown Voltage di Gardu Induk Serpong Christiono; M. Reza Hidayat
EPSILON: Journal of Electrical Engineering and Information Technology Vol 18 No 3 (2020): EPSILON: Journal of Electrical Engineering and Information Technology
Publisher : Department of Electrical Engineering, UNJANI

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Abstract

The increasing demand for electric energy will always coimcide with increasing equipment performance at electrical substation. Power Transformer is one of the tools that really feels the impact, namely the increasing temperature of it is conductor in the form of transformer windings. That is the reason why the transformer has insulation in it, in the form of cellulose paper and transformer oil. To know the indication of failure on the transformer, we can test one of the transformer insulation, namely transformer oil. By doing the DGA testing and Breakdown Voltage of Transformator Oil Testing. After doing the DGA test by analyzing the testing result using TDCG, Key Gas, Doernenburg Ratio, Rogers Ratio, and Duval Triangle Methods. It can be seen that transformer 1 and 3 have experienced a failure indication in the form of temperature failure (Thermal Fault). It can be seen from the high content of methane and ethane gas. And after testing the voltage of the transformer oil breakdown, it can be seen that the condition of the transformer oil breakdown voltage 1 and 3 in the first test are still in good condition. Contrast with the second test, value of the breakdown voltage from both transformer are very bad. That is because the distance between the time of sampling with the testing is very far away and it causes many contaminans in the transformer oil.
ANALISIS PENGARUH JENIS BAHAN BAKAR B0, B30, B35, DAN B40 TERHADAP EFISIENSI THERMAL PLTD BIAK Syi’ar Mulya Ahmad Pratiknyo; Christiono
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.11511

Abstract

Diesel Power Plants (PLTD) play an important role in supplying electrical energy, particularly in island regions and remote areas such as Biak. To support the national energy transition, the government has implemented a mandatory biodiesel policy that has progressively increased from B30 and B35 to B40 in order to reduce dependence on fossil fuels. This study aims to analyze the thermal efficiency of PLTD Biak under B0, B30, B35, and B40 fuel types, as well as their effects on Specific Fuel Consumption (SFC) and heat rate. The research employed a quantitative descriptive approach using actual operational data, including fuel consumption, generator output power, and fuel heating values. The results show that increasing biodiesel content causes SFC to rise from 0.251 liter/kWh for B0 to 0.271 liter/kWh for B40, reduces thermal efficiency from 39.8% to 37.1%, and increases heat rate from 9,045 kJ/kWh to 9,704 kJ/kWh. It can be concluded that B30 provides the best balance between supporting the mandatory biodiesel policy and maintaining operational performance, while B35 and B40 require optimization of operating parameters to preserve efficiency.
Co-Authors M. Reza Hidayat Syi’ar Mulya Ahmad Pratiknyo