Sungai memberikan peranan yang sangat besar bagi perkembangan peradaban manusia di seluruh dunia, antara lain sebagai sumber air minum untuk kebutuhan utama bagi kehidupan manusia, irigasi untuk kebutuhan pertanian, kebutuhan industri, sarana transportasi dan objek wisata. Seiring dengan perkembangan zaman, kebutuhan manusiapun bertambah dan sungai dimanfaatkan sebagai sumber pembangkit tenaga …
This study aims to determine the effect of variations in SiO₂ layer thickness on the Partial Discharge Inception Voltage (PDIV) and Breakdown Voltage (BDV) values in epoxy resin composites. The SiO₂ layer was prepared using a TEOS-based sol-gel method and applied by spray coating technique on the sample surface. The thickness variations tested were 20 µm, 30 µm, 40 µm, 50 µm, and 60 µm…
This research aims to develop an Indonesian news text classification system to distinguish between formal and non-formal texts. This classification system utilises the Long Short-Term Memory (LSTM) algorithm with reference to the Big Indonesian Dictionary (KBBI). The development process involves text preprocessing techniques, such as data cleaning, lower case, remove punctuation, tokenising, st…
Skripsi ini melaporkan hasil penelitian pengaruh dari kelembaban terhadap karakteristik tegangan tembus minyak mineral nynas nytro libra sebagai minyak isolasi dengan ditambah beberapa pengisi seperti Fe3O4, MgCl2, dan NaCl pada kelembaban relatif yang berbeda-beda. Pengujian dilakukan terhadap sampel nynas nytro libra oil dengan penambahan tiga pengisi pada konsentrasi 0,05;0,1;0,2 dalam g/L u…
Penelitian ini membahas mengenai peningkatan kekuatan dielektrik pada kertas kraft yang diimpregnasi minyak kedelai berpengisi campuran SiO2 dan CQD dengan konsentrasi total 0,01 wt%. Kertas kraft yang akan diuji berbentuk persegi empat dengan panjang sisi 30 mm dan ketebalan 0,08 mm. Sampel uji akan direndam menggunakan bahan pengisi SiO2 dan CQD dengan variasi waktu perendaman 24, 48, 72, 96,…
Penelitian ini melaporkan hasil penelitian mengenai pengaruh polutan dari kendaraan bermotor yang melintasi Jalan Musi 2 Palembang pada material isolasi epoxy resin. Pengukuran yang dilakukan yaitu sudut kontak (contact angle) dan arus bocor (leakage current). Pengukuran sudut kontak pada sampel tanpa pengkondisian sebagai sampel kontrol, 120 jam; 168 jam; dan 216 jam didapatkan nilai sudut kon…
Skripsi ini membahas identifikasi pola Partial Discharge (PD Pattern) pada switch Larken EB-21 dengan variasi penurunan tekanan udara Proses pengukuran dilakukan dengan sistem elektroda switch yang ditempatkan di dalam gas test chamber. Selanjutnya dilakukan proses vacuum untuk mengurangi tekanan udara yang terdapat di dalam gas test chamber dengan nilai tekanan tekanan udara dari 766,5 mmHg, l…
Penelitian ini mempelajari pengaruh rongga udara (void) dalam isolasi epoxy resin terhadap karakteristik partial discharge (PD). Pengujian dilakukan pada sampel epoxy resin multilayer dengan ketebalan masing-masing lembaran ±0,35 mm dan ketebalan total ±1,05 mm dimana pada bagian tengah sampel diberikan artificial void masing-masing lembar sampel, dengan volume void total 27,49mm3. Tegangan t…
Penelitian ini melaporkan hasil studi tentang pengaruh kontaminan kabut garam(salt-fog) pada silicone rubber sebagai fungsi waktu pengkondisian terhadap sudut kontak (contact angle) dan resistivitas permukaan (surface resistivity). Resistivitas permukaan dihitung berdasarkan nilai arus bocor pada permukaan sampel. Hasil pengukuran sudut kontak untuk kelompok kontrol adalah sebesar 109,6º. Untu…
This study discusses the effect of temperature on Bakelite Sheet material. Tests were conducted on Bakelite Sheet samples treated with temperatures of 150°C, 200°C, and 250°C with a heating time of 30 minutes. As a comparison, tests were also conducted on unheated Bakelite Sheet control samples. The samples were made in the form of sheets with a length of 50 mm, a width of 50 mm, and a thick…
This study examines the effect of adding a mixed filler of Cerium Oxide (CeO₂) and Silicon Dioxide (SiO₂) nanoparticles on the dielectric characteristics of corn oil as an environmentally friendly alternative transformer insulating oil. The CeO₂–SiO₂ nanoparticle mixture was prepared in a 1:1 ratio with concentrations of 0,05; 0,1; 0,15; and 0,2 wt%. The experimental procedures includ…
This paper focuses on analyzing the effect of moisture content in Virgin Coconut Oil (VCO) on the dielectric properties of pressboard as a transformer insulation material. The experiments were conducted on two types of samples: non-impregnated pressboard and pressboard impregnated with VCO for 6, 12, and 24 hours. The tested parameters included moisture content, relative permittivity, Partial D…
Silicone oil is one of the insulating liquids used in power transformers due to its high thermal stability and excellent dielectric properties. However, during operation, this oil may degrade because of thermal aging and contamination by solid particles such as Kraft paper. This study aims to analyze the effect of thermal aging and the presence of Kraft paper particles on the breakdown voltage …
This study aims to analyze the breakdown voltage characteristics of a mixture of mineral oil and Extra Virgin Olive Oil (EVOO) with the addition of Aluminium Oxide (Al₂O₃) nanoparticles as filler. Mineral transformer oil is widely used due to its excellent dielectric strength but is not environmentally friendly. As an alternative, Extra Virgin Olive Oil, which is biodegradable and has a hig…
This study aims to analyze the effect of addition of ZnO, Al2O3, and TiO2 nanoparticles on breakdown voltage values. The test was conducted on soybean oil samples with varying concentrations of 0,1, 0,2, 0,3, and 0,4 wt% of each nanoparticles, as well as pure soybean oil to observe the effect of adding ZnO, Al2O3, and TiO2 nanoparticles. This test used ∅ 13 mm sphere electrode system with a 2…
This research investigates the enhancement of PDIV and Breakdown Voltage in Epoxy Resin insulation material filled with MgO and ZnO at concentrations of 1 wt%, 2 wt%, 3 wt , 3,5wt% and 4 wt%. Testing was performed using a needle-plane electrode with a 1 mm gap, and AC voltage was ramped up at 100 V/s for PDIV and 1 kV/s for . Test results showed that adding MgO and ZnO improved insulation perfo…
Partial Discharge Inception Voltage (PDIV) and Breakdown Voltage (BDV) characteristics of kraft paper insulation impregnated with canola oil containing ZnO (zinc oxide) nanofluid, under variations in multilayer configuration and impregnation time. The purpose of this research is to analyze the influence of ZnO nanoparticle concentration and multilayer structure on the dielectric performance of …
This paper aims to analyze the effect of adding silicone dioxide (SiO₂) as a filler on the dielectric properties of epoxy resin. The samples were prepared using Bisphenol A–Epichlorohydrin epoxy resin with SiO₂ filler concentrations of 1; 2; 3; 4; 5 wt%. The tests were conducted using a plate-plate electrode system at a frequency of 50 Hz to measure the relative permittivity, dissipation …
In the power system of the Bukit Siguntang Substation, specifically on the Rusa feeder, there is a protection system consisting of an Overcurrent Relay and a Groundfault Relay. Therefore, research was conducted on the evaluation of the coordination settings of the OCR and GFR protection system to maximize the performance of a selective and reliable protection system. Based on the value of the i…
Pada tugas akhir ini bertujuan untuk menganalisa keandalan suatu sistem tenaga listrik pada pusat pembangkit di PT. Pertamina EP Prabumulih. Suplai listrik PT Pertamina EP area Prabumulih semua berasal dari Pembangkit Listrik Tenaga Gas di Talang Jimar yang terdiri dari 11 genset dengan keluaran 6,6 KV, dengan kapasitas 4 x 910 kW dan 7 x 975 kfV. Dalam operasinya, power plant talang jimar meng…
Dalam pengoperasian Motor Induksi dengan metode starting langsung pada saat melakukan start arus motor empat sampai tujuh kali dari arus nominal atau momen awalnya sering terlampau kecil yang tentunya akan mempengaruhi jatuh tegangan. Pada motor ZM-2051-1 arus awal mencapai lima kali dari arus normal. Hal ini menunjukan bahwa arus pada kondisi saat starting motor cukup besar sehingga, menyebabk…
Conductive concrete is essential for the advancement of contemporary construction technology. Conductive concrete can conduct electricity and is used in the construction of smart infrastructure, structural sensors, surface heating systems and more. Iron powder can be used as a substitute for fine aggregate or sand. This research uses age variations and iron powder concentrations of 0%, 25%, 50%…
Thisstudy aims to describe in depth the learning process of the Electric Welding Training Program at the UPTD Panti Anak Berhadapan Hukum Indralaya. The research method used is a qualitative approach with a focus on behavioristic learning theory. Data were collected through participatory observation, in-depth interviews, and document analysis to analyze changes in learner behavior during the tr…
The inability of renewable plants such as PLTS Singkarak to produce energy continuously due to the influence of intermittency can result in energy fluctuations. The purpose of this research is to understand the effect of intermittency on PLTS Singkarak and compare the conditions before and after PLTS Singkarak is interconnected to the West Sumatra system carried out by DIgSILENT stability simul…
During the process of distributing electrical energy, there are power losses and energy losses that result in unreliable power quality. The purpose of this research is to find out how much power and energy losses occur in the Mataram feeder in March 2024, and compare the percentage value of power losses with SPLN standards. This research uses two methods, namely manual calculation and simulatio…
The electrical discharge process known as Initial Breakdown (IB) is the initial trigger for a cloud-to-ground (CG) lightning flash. This phenomenon arises from the intensification of the electric field by a positive charge pocket located below the main negative charge center within a cumulonimbus cloud. This study aims to observe the presence of IB pulse trains that initiate the first return st…