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All Journal Buletin Udayana Mengabdi Jurnal SPEKTRUM Majalah Ilmiah Teknologi Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) PROSIDING CSGTEIS 2013 JURNAL NASIONAL TEKNIK ELEKTRO Journal of Electrical, Electronics and Informatics International Journal of Engineering and Emerging Technology Indonesian Journal of Electrical Engineering and Computer Science Journal of Applied Science, Engineering, Technology, and Education Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Majalah Ilmiah Teknologi Elektro
Wayan Gede Ariastina
Study Program Of Electrical Engineering, Faculty Of Engineering,Udayana University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Review Perkembangan PLTS di Provinsi Bali Menuju Target Kapasitas 108 MW Tahun 2025 A.A. Gede Ari Pawitra Putra; I.N.S. Kumara; W. G. Ariastina
Jurnal Teknologi Elektro Vol 19 No 2 (2020): (Juli - Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2020.v19i02.P09

Abstract

The central government policy through RUEN targets Bali to use 108 MWp of solar energy by 2025. Bali as a small island of highly developed tourism destinations in Indonesia is considered to have the opportunity to exploit this potential. This research tries to review how the development of PV system in Bali through literature study and field observation. The results of this study indicate that the development of total PV system installed capacity in Bali to date has reached 3.71 MWp or 3.44% of the RUEN target. Based on data managed by the development of PV system in Bali in the last 14 years it increased an average of 265.18 kWp or 7.14% annually. Until now the highest PV system capacity in Bali is in Karangasem Regency which has an installed PV system capacity of 1,106 kWp or 29.79% of the total capacity in Bali. While the lowest capacity is in Jembrana Regency with an installed capacity of 10 kWp or 0.27%. PVsystem in Bali is used in a variety of applications, the largest capacity used for utilities is 58.64%, while the lowest is used for water pumps by 0.55%. Based on the type of PV system, Bali is dominated by an on-grid PV system with an installed capacity of 3,225 kWp or 87%, while the lowest is a hybrid PV system with a capacity of 224 kWp or 6% of the total capacity in Bali.
Studi Tarif Listrik Dengan Menggunakan Metode Long Run Marginal Cost Di EDTL Timor Leste Norberto Soares; Ida Ayu Dwi Giriantari; Wayan Gede Ariastina
PROSIDING CSGTEIS 2013 CSGTEIS 2013
Publisher : PROSIDING CSGTEIS 2013

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Abstract

Abstrak—Untuk mencukupi suplai energi listrik ke semua pelanggan, maka pemerintah telah mengalokasikan biaya investasi guna pengembangan sektor kelistrikan di Timor Leste. Biaya investasi untuk pembangunan pembangkit, transmisi 150 kV maupun sistem distribusi semuanya bersumber dari anggaran belanja negara atau Orçamento Geral do Eestado (OGE) de Timor Leste. Selain itu setiap tahun pemerintah tetap mengalokasikan anggaran guna mempertahankan kelangsungan pengoperasian dan penyediaan energi listrik yang berkesinambungan, akibat dari kerugian yang dialami pihak EDTL setiap tahunnya. Salah satu penyebab kerugian ini yaitu mengingat penetapan tarif listrik selama ini sangat rendah dan belum sepenuhnya berdasarkan pada prinsip-prinsip tarif yang ekonomis. Untuk itu perlu menentukan tarif listrik yang memenuhi nilai keekonomian agar pihak penyedia tenaga listrik dan para konsumen bisa memperoleh keuntungan dan harga yang wajar.Tujuan dari studi ini adalah untuk menganalisa dan mengadakan perhitungan tarif listrik yang mengacu pada nilai keekonomiannya dengan menggunakan metode long run marginal cost (LRMC). Studi ini hanya membahas tentang penentuan tarif listrik di Timor Leste dengan menggunakan metode LRMC. Sehingga dari pembahasannya akan memberikan gambaran mengenai pemanfaatan sumber daya yang seimbang antara biaya pemanfaatan energi dan biaya pasokan energi listrik.Dari hasil analisis dan perhitungan dapat disimpulkan bahwa tarif listrik rata-rata yang diimplentasikan oleh pemerintah saat ini sebesar $0,15/kWh tidak memberikan indikator keuntungan kepada pihak penyedia tenaga listrik. Namun, dari perhitungan dengan metode LRMC dapat diketahui bahwa tarif rata-rata yang wajar sebesar $0,37/kWh. Dengan demikian, pihak EDTL akan memperoleh peningkatan pendapatan jika dibandingkan dengan eksisting tarif 2012.Kata kunci—Studi Tarif listrik, Alokasi tarif Tiap Kategori Pelanggan, EDTL Timor Leste, Long Run Marginal Cost, PLTD Hera dan Betano.
ANALISIS PERKEMBANGAN PLTS DI PROVINSI SUMATERA SELATAN MENUJU TARGET 296,6 MW PADA TAHUN 2025 D.Y. Manurung; I.N.S. Kumara; W.G. Ariastina W.G. Ariastina; J. Pangaribuan
Jurnal SPEKTRUM Vol 9 No 1 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (345.389 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i01.p7

Abstract

Target capacity of Solar Power Plant in Province of South Sumatra is pursued throughthe construction of a rooftop PV mini-grid system with off-grid and on-grid systems. Based onNational Energy General Plan (RUEN) in 2017, Province of South Sumatra has the third largestsolar power potential on a national scale with a target of Solar Power Plant developmentreaching 296.6 MW in 2025. Province of South Sumatra is the second most populous provinceon Sumatra Island with electricity consumption reaching 5,308 GWh in 2020. This study tries toanalyze the development of Solar Power Plant in Province of South Sumatra based on theliterature review. Solar Power Plant that has been installed until 2021 reached 12.441 MW oraround 4.12% of the South Sumatra RUEN target of 296.6 MW in 2025. The types of SolarPower Plant applications in Province of South Sumatra consist schools, hotels, palm oilfactories, irrigation pumps , and utility networks spread across Palembang, Muara EnimRegency, Muara Rawas Regency, and Ogan Hilir Regency
A Review on Biomass for Electricity Generation in Indonesia Dony Septa Primadita; I.N.S. Kumara; W.G. Ariastina
Journal of Electrical, Electronics and Informatics Vol 4 No 1 (2020): JEEI (February 2020)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2020.v04.i01.p01

Abstract

The Indonesian National Energy Policy stipulates that renewable energy must contribute 23% of total energy consumption by 2025 and increase to 31% by 2050. Among many resources of the country, biomass is a renewable energy source whit the potential is estimated at 32,654 MW. This article reviews the biomass and electricity generation implementation in Indonesia to get insights on the development of the biomass for power generation of the country. Currently, the biomass electricity generation technology that has been applied in Indonesia includes direct combustion as fuel for coal power plants or co-firing, converted into refuse-derived fuel, gasification, sanitary landfills, and incinerators. From 2011 to 2019, the installed capacity of biomass power plants reached 1857.5 MW or 33.78% of the target of 5500 MW in 2025. The biomass power plants are located in North Sumatra, Jambi, Gorontalo, Riau, West Nusa Tenggara, Papua, Bangka Belitung, North Sulawesi, South Sumatra, East Java, and Jakarta. Considering the high 2025 electricity from biomass target, it is necessary to develop a more intensive biomass power plants because of its large potential, available technology, and its benefits to increase the electrification ratio especially for providing electricity for people in areas not yet covered by the utility network, realizing national energy security, and reducing the use of fossil-based fuels.
Natural Deys from Fruit Waste as a Sensitizer for Dye Sensitized Solar Cell (DSSC) I Nyoman Setiawan; Ida Ayu Dwi Giriantari; Wayan Gede Ariastina; Ida Bagus Alit Swamardika; Agus Selamet Duniaji; Nyoman Satya Kumara
Journal of Electrical, Electronics and Informatics Vol 1 No 1 (2017): JEEI (February 2017)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2017.v01.i01.p06

Abstract

Dye-sensitized solar cell (DSSC) is one of the potential candidates for the next generation solar cells. One of the most attractive features of the DSSC is the low production costs. The utilization of natural dyes is a new area for investigation due to their unique capability to absorb photons from natural sunlight or artificial light and convert it into electric current. The purpose of this study is to determine the potential of natural dye from red dragon fruit waste as a dye sensitizer. Red dragon fruit peel is initially extracted using methanol and the solution absorption spectra then is characterized using UV-Vis spectrophotometer. The absorption spectra is measured within a wavelength range of 400-800 nm. The characterization results show that the maximum absorption spectrum is at a wavelength of 446 nm. The natural dye solution then is used to immerse Fluorine Tin Oxide (FTO) coated with titanium dioxide (TiO2). The glass FTO is immersed in the dye solution for 24 hours. DSSC then is prepared by sandwiching the working electrode and counter electrode. An electrolyte solution is used to fill the interface between the two electrodes. The current and voltage (I-V) characteristics of DSSC is finally measured using amperemeter and voltmeter. The results indicated that the natural dye from the peel of red dragon fruit has potential as a dye sensitizer. Further research is still required to improve the performance of the DSSC.
The Management Of Flood Protection System Of Dewa Ruci Underpass In Bali Putu Martha Risnadinata; I Nyoman Satya Kumara; Wayan Gede Ariastina
Journal of Electrical, Electronics and Informatics Vol 4 No 2 (2020): JEEI (August 2020)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2020.v04.i02.p04

Abstract

Dewa Ruci intersection is one point of traffic congestion point in Bali. Dewa Ruci is a major intersection that connects the city of Denpasar, Kuta, Jimbaran, and Nusa Dua. In addressing traffic congestion, built underpass so that traffic becomes smooth when passing through the intersection Dewa Ruci. Part of the Dewa Ruci intersection is below the ground level, so risks of flooding. The source of water that potentially fills the underpass is groundwater seepage and rainfall. The flood protection of the underpass is capable of storing 1344 m3 water and with the pumping system. In this research, the maintenance, operation, and management model of the flood protection system is developed that includes the development of organizational structures and standard operating procedures to ensure that the Dewa Ruci flood protection system works well sustainably.
Study of Transformer Lifetime Due to Loading Process on 20 KV Distribution Line A.A.N. Amrita; W.G. Ariastina; I.B.G. Manuaba
Journal of Electrical, Electronics and Informatics Vol 2 No 2 (2018): JEEI (August 2018)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2018.v02.i02.p01

Abstract

Power transformer is very important in electric power system due to its function to raise or lower the voltage according to its designation. On the power side, the power transformer serves to raise voltage to be transmitted to the transmission line. On the transmission side, the power transformer serves to distribute the voltage between the main substations or down to the distribution voltage. On the distribution side, the stresses are channeled to large customers or lowered to serve small and medium customers. As the power transformer is so importance, it is necessary to protect against disturbance, as well as routine and periodic maintenance, so that the power transformer can operate in accordance with the planned time. Some factors that affect the duration of the power transformer is the ambient temperature, transformer oil temperature, and the pattern of load. Load that exceeds the maximum efficiency of the transformer which is 80% of its capacity will cause an increase in transformer oil temperature. Transformer oil, other than as a cooling medium also serves as an insulator. Increasing the temperature of transformer oil will affect its ability as an isolator that is to isolate the parts that are held in the transformer, such as iron core and the coils. If this is prolonged and not handled properly, it will lead to failure / breakdown of insulation resulting in short circuit between parts so that the power transformer will be damaged. PLN data indicates that the power transformer is still burdened exceeding maximum efficiency especially operating in the work area of PLN South Bali Area. The results of this study, on distribution transformers with different loads, in DS 137, DS 263 and DS 363, show that DS 363 transformer with loading above 80% has the shortest residual life time compared to DS 263 and DS 137 which loading less than 80%.
Middleware ETL with CDC based on Event Driven Programming I Gede Adnyana; Made Sudarma; Wayan Gede Ariastina
International Journal of Engineering and Emerging Technology Vol 3 No 2 (2018): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

To achieve the real time data warehouse is strongly influenced by the process in the data warehouse known as Extract, Tranform, Loading (ETL). One way to optimize the ETL process is processing only data that undergoes changes on the On Line Transaction Processing (OLTP) system. This technique is known as Change Data Capture (CDC) which is designed to maximize the efficiency of the ETL process. In this research middleware was built as a place where the ETL process will be carried out, transaction data from the OLTP system will be captured and sent directly to the middleware for further processing. The method used to capture changes in OLTP systems is Change Data Capture (CDC) based on Event Driven Programming, where this technique relies on events that occur in OLTP in capturing data changes. Functional testing is done by making a simulation of the insert and update processes in test applications namely OLTP CRM system.The results of the research obtained are (1) Change Data Capture (CDC) based on Event Driven Programming can capture changes in data that occur in OLTP CRM database;(2) ETL process to load data from Normalized Data Store (NDS ) to data warehouse with Timestamp technique can load data that only undergoes changes that are processed to be loaded in Data Warehouse;(3) An increase in the amount of data that is processed has an effect on increasing processing time. Other factors that affect the value of process time are execution plan and cache memory
Effect of Solvents on Natural Dyes Extraction from Mangosteen Waste for Dye Sensitized Solar Cell Application I Nyoman Setiawan; Ida Ayu Dwi Giriantari; Wayan Gede Ariastina; Ida Bagus Alit Swamardika
International Journal of Engineering and Emerging Technology Vol 3 No 2 (2018): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Natural dyes are economically and environmentally superior to ruthenium-based dyes because they are cheap and non-toxic. In this study, natural dyes were extracted from mangosteen peel waste. Color extraction was carried out with three types of solvents (distilled water, methanol and ethanol) which had been acidified with 10% citric acid and with a ratio of material: solvent (1: 4, 1: 6, 1: 8 w / v). The photochemical properties are studied by UV-Vis spectrophotometer and FTIR spectroscopy. The absorption peak of the three types of solvent occurs at different wavelengths. The presence of carbonyl (C = O) and hydroxyl (OH) groups contained in anthocyanins can attach coloring to the surface of TiO2. Ethanol solvents with a ratio of 1: 8 produce the lowest photon energy at wavelength and absorption coefficient of 539.00 nm and 2,008 km-1 respectively. The lowest band gap of the dye helps electrons move rapidly from the valence band to the conduction band and only requires less energy for electron recombination which will increase the performance of the DSSC.
A Placement and Sizing of Distributed Generation Based on Combines Sensitivity Factor and Particle Swarm Optimization: A Case Study in Bali’s Power Transmission Networks Ngakan Putu Satrya Utama; Rukmi Sari Hartati; Wayan Gede Ariastina; Ida Bagus Alit Swamardika
International Journal of Engineering and Emerging Technology Vol 2 No 2 (2017): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Although many methods for optimizing DGplacement and its size in a network with the target of reducingsystem power losses and voltage profile have already beencommended, they still lack from several weaknesses. As a resultmuch can be done about to happen with new algorithms. Theproposed algorithms commonly have stressed their formulationson real power losses only and ignored the reactive power losses.Power systems reactive power injection plays an important rolein voltage stability control, thus the reactive power losses need tobe incorporated in optimizing DG allocation considering theirvoltage profile improvement. Whereas Particle SwarmOptimization (PSO) approach was proposed for finding theoptimal size of DG. This study work intended to apply both realand reactive power flow, power loss sensitivity factors and PSOmethod in finding the candidate buses for DG placement and itssize on Bali’s 150 kV transmission networks. The experimentalresults show that the proposed algorithm is indeed capable ofobtaining a good quality solution efficiently
Co-Authors A I Weking A. A. Ngurah Bagus Budi Nathawibawa A. A. T. B. Artawan A. Ibi Weking A.A Ngurah Amrita A.A. Gede Ari Pawitra Putra A.I. Weking AA. M Pemayun Abdul Latif Abid Surya Bimantara Agus Selamet Duniaji Awgustus Patandean Bawa Adiputra C. G. I. Partha, C. G. I. C. G. Indra Partha D.Y. Manurung Derren, M. Dewa ayu Nancy Cahyani Dharmawan, N. B. Dony Septa Primadita DPD Suparyawan Gede Endrawadi Gede Ogiana Gede Sukadarmika Govinda Riawan Haekal, Muhammad Hasan Dedy Sudono I Dewa Gede Wisnu Agung Bayuna I G.N. Evan Aditya Pramana I Gede Adnyana I Gede Budhi Arsana I GN Dion Adiputra I Gusti Ngurah Priambadi I Kadek Hendy Wijaya I Kadek Krisna Yoga I Ketut Citra Adi Putra I M Suartika I M.T. Sismantara I N Satya Kumara I Nyoman Budiastra I Nyoman Oksa Winanta I Nyoman Setiawan I Nyoman Suprapta Winaya I P. A. Edi Pramana I Putu Arsikaputra I Putu Eka April Yanto I W A Wijaya I W A WINARTA I W Rinas I W.Y.M. Wiguna I Wayan Arta Saputra I Wayan Arta Wijaya I Wayan Sukerayasa I. N. S. Kumara I. W. Sukerayasa, I. W. I.B.G. Manuaba I.G.W. Artana I.N.S. Kumara I.P.H. Wahyudi I.W. Yudi Martha Wiguna Ida Ayu Dwi Giriantari Ida Bagus A. Swamardika Ida Bagus Bawa Adiputra Indra Baskara INS Kumara INS Kumara Intan Aprilia Medina IW Gunarta J. Pangaribuan Julius Mahendra Sihombing Juniastra Gina K A Kartika Sari Kadek Ary Budi Permana Kadek Hari Merta Kadek Sumariana Kenny Angel Manik Ketut Vidhia Kumara Komang Oka Saputra Kumara, I. N. S. l Gusti Ngurah Janardana Leba, G. I. M. M.K. Huda M.T. S.T. I Wayan Sutaya . Made Sudarma mahadi putra Michael Candra Santoso Muhammad Fauzi Muhammad Hari Wijaya Muhammad Malik Al Falah N. A. Kartono N. B. Dharmawan N. Nuswantara N.W. Budiantari Ngakan Putu Satriya Utama Ngakan Putu Satrya Utama Ni Made Ary Esta Dewi Wirastuti Ni Made Ary Esta Dewi Wirastuti NM Karmiathi Norberto Soares Nyoman Gede Yudiarta Ontoseno Penangsang Pande K. B. Sutawan Putu Martha Risnadinata R.S. Hartati Rukmi Sari Hartati Sari, N. P. A. R. Sembiring, Rinawati Setiawan, I N. Setiawan, I. N. Sinaga, P. M. Solly Aryza Suriana, I Wayan Surung Rafael Sihaloho Virgunia, D. A. Yohana Fransisca Sarumpaet