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All Journal International Journal of Applied Power Engineering (IJAPE) Jurnal Teknik Elektro Universitas Tanjungpura ELKHA : Jurnal Teknik Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) JUSTIAN - Jurnal Sistem Informasi Akuntansi Telecommunications, Computers, and Electricals Engineering Journal Journal of Electrical Engineering, Energy, and Information Technology
Managam Rajagukguk
Tanjungpura University
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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Journal : Telecommunications, Computers, and Electricals Engineering Journal

 1 
TRAFO OIL FAILURE BASED ON DISSOLVED GAS ANALYSIS AND VOLTAGE BREAKDOWN RESULTS Fauji, Ahmad; Kurnianto, Rudi; Rajagukguk, Managam
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 1, No 1: June 2023
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v1i1.69800

Abstract

Contamination on the transformer oil can lead to the oil failure of the transformator. Therefore, the transformer oil needs to be tested to make sure the oil is still in good condition. To find indications of oil failure the transformator needs to be tested DGA and BDV. From the results of the analysis with the TDCG method, the gas content in the transformer oil is less than 720 ppm so according to the IEEE standard, the oil transformer is indicated in normal conditions. In the Key Gas method, the percentage of the dominant carbon monoxide gas content is in the range of 85-90% so it is indicated that heating occurs on paper insulation. In the Duval Triangle method, the cut point between methane gas, ethylene and acetylene is in zone 1 and zone 2 so indicated that the oil of the transformator has thermal interference. In the BDV test, the transformer oil resistance values of 40.43 kV and 38.98 kV were obtained according to the IEC oil standard indicated in normal conditions. Of the four methods used to analyze the condition of the oil transformers concluded the oil of the transformers in a good condition but indicated heating.
ANALYSIS OF DISTRIBUTION TRANSFORMER LIFE BASED ON LOAD AT PT. PLN (PERSERO) PONTIANAK Pirniawan, Yoga; Gani, Usman A.; Rajagukguk, Managam
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 1: June 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i1.75928

Abstract

Energy needs in the city of Pontianak are increasingly growing along with population and industrial development. This can be seen from the growth rate of various types of consumer needs, including household, industrial, commercial consumers (shopping centers, entertainment centers, services), educational institutions and offices. A transformer is a static electromagnetic electrical equipment that functions to transfer and change electrical power. Distribution transformers have an important role in distributing electric power in the distribution system. International Electrotechnical Commission (IEC) 534 of 1972 states that if the transformer is loaded stably at its rated power with an ambient temperature of 20 °C, the transformer hot spot temperature will reach 98 °C and the life of the transformer will reach 20 years or 7300 days with losses. normal age 0.0137% per day. The average temperature around the city of Pontianak is 30 °C, so the transformer loading must be adjusted so that the distribution transformer's service life remains normal. There are more than 1000 distribution transformers in Pontianak for residential distribution transformers and industrial distribution transformers. Residential distribution transformers experience a shorter service life because the load usage on the distribution transformer is unstable. This is different from industrial distribution transformers where the usage load is constant. In industrial distribution transformers, there are transformers that are approaching overload with a usage load of 91.88%. The remaining service life is shorter than residential distribution transformers because the load is quite large.
EVALUATION OF CLOUD TO GROUND FLASH DENSITY OF 150 KV TRANSMISSION LINE BETWEEN PARIT BARU SUBSTATION AND SENGGIRING SUBSTATIO Manalu, Ayub Rainaldo; Danial, Danial; Rajagukguk, Managam
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 1, No 3: February 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v1i3.73668

Abstract

SUTT is a high voltage overhead line with a power of 70 kV - 150 kV to distribute electric power from the generating center to the substation or from substation to substation. The purpose of this study was to obtain modeling of lightning strike density on the 150 kV transmission line between Parit Baru substation and Senggiring substation using geostatistical approaches, namely IDW methods (Inverse Distance Weighted). In identifying the level of vulnerability to lightning strikes, Cloud to Ground lightning event data (2018"“2020) is used. The aim of this research is to obtain the density pattern of lightning strikes on the 150 kV transmission line between the Parit Baru substation and the Senggiring substation. The process in ArcGIS 10.8 software aims to obtain lightning strike density and display the results of the lightning strike density map. Based on the results of data processing for 3 years, the highest density of lightning strikes occurred in 2019 in Segedong District at 54.52 strikes/km ². Meanwhile, the lowest density of lightning strikes occurred in 2018 in East Mempawah District, amounting to 2.86 strikes/km ². Based on the lightning strike density map per grid on the 150 kV transmission line between Parit Baru substation and Senggiring substation for 3 years, the results obtained for the highest lightning strike were 36 strikes/km ² while for the lowest strike it was 1 strike/km ². From this research, it was found that there were 15 transmission towers that passed a high density of lightning strikes with a strike range of 25"“36 strikes/km ² and the highest lightning strike occurred at tower number 31, number 30, and number 29, amounted to 36 strikes/km ².
STUDY ON THE EFFECT OF WATER CONTENTS IN THE DISTRIBUTION TRANSFORMER OIL AGAINST IT'S BREAKDOWN VOLTAGE Manurung, Daniel Julius Pangihutan; Kurnianto, Rudi; Rajagukguk, Managam
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 1: June 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i1.79073

Abstract

The degradation of electrical power quality due to high water content in transformer oil is a critical issue because water in transformer oil can cause insulation degradation, increase electrical conductivity, and accelerate the corrosion process of internal components. This results in a decrease in transformer performance and reliability, and increases the risk of electrical faults or failures that can have far-reaching impacts on the power distribution network. Water damage can also shorten the operational life of the transformer and increase maintenance and component replacement costs. Therefore, testing the breakdown voltage, moisture content, and flash point of distribution transformer oil is very important to determine the feasibility of transformer oil. This study aims to determine the effect of moisture content on breakdown voltage and flash point, as well as the effect of breakdown voltage on flash point. By using the test method of breakdown voltage, moisture content, and flash point is expected to determine the feasibility of transformer oil. The results obtained from the old transforamtor oil (14 years) have a breakdown voltage of 1.3 kV, the transformer oil has been used (2 years) of 24.25 kV, and for the new transformer oil of 34.4 kV. For old transformer oil moisture content of 140.19 ppm, used transformer oil moisture content of 34.03 ppm, new transformer oil moisture content of 26.04 ppm, old transformer oil flash point measurement results of 148 ° C, used transformer oil samples of 150 ° C, and new transformer oil samples of 160.5 ° C. In conclusion, the old and new transformer oil is still suitable for use.
Co-Authors Ahmad Fauji, Ahmad Alamsyah, Muhammad Reky ARI SUSANTO Ayong Hiendro Danial - Fitriah Husin Florus, Egi Gani, Usman A. haris, muhamad abdul Hendro Priyatman Huvat, Alexander Ilhamdi, Muhammad Kho Hie Khwee M. Iqbal Arsyad Manalu, Ayub Rainaldo Manurung, Daniel Julius Pangihutan Muhammad Rivai Nadhif, Irfan Nanda Diaz Arizona Pirniawan, Yoga Regatra, Mexsy Rudi Kurnianto Rudy Gianto Rudy Gianto, Rudy Sijabat, Juanda Parasian Siti Helmyati Ulwan, Nasih Usman A. Gani Wongso, Dio Suseno Zia Ulhaq, Zia