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Jurnal SPEKTRUM
Published by Universitas Udayana
ISSN : 23023163     EISSN : 26849186     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering
Jurnal SPEKTRUM is peer review journal, published four times a year by the Department of Electrical Engineering, Faculty of Engineering, Universitas Udayana. This journal discusses the scientific works containing results of research in the field of electrical, include: power systems, telecommunications, computers, informatics, controls, and electronics. Authors are expected to include original scientific papers in accordance with the scope of the discussion of this journal including all aspects of the theory and practice are used.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 677 Documents
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KAJIAN EKONOMI PEMANFAATAN PLTS ATAP DI GEDUNG RUMAH JABATAN GUBERNUR PROVINSI BALI Diva Aristia, Gusti Bagus; Dwi Giriantari, Ida Ayu; Sukerayasa, I Wayan
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p33

Abstract

To meet the high demand for electrical energy, an alternative solution that can be applied is the use of New and Renewable EnergyIndonesia targets to achieve Net Zero Emissions (NZE) by 2060. Planning for a rooftop PLTS at the Office of the Governor of the Province of Bali is expected to be able to assist in the expansion of PLTS in the Province of Bali in terms of strengthening Governor Regulations/Regional Regulations that support the use of Solar Power Plants. The design of the rooftop PLTS at the Bali Province Governor's Office Building was carried out using 4 scenarios. Scenario 1 is a design that utilizes the roof area facing the north side. Scenario 2 is by utilizing the roof area only to meet the peak load of the building. Scenario 3 is a design that utilizes the entire roof area of the building that best meets the criteria. Meanwhile, scenario 4 is scenario 2 but uses a microinverter device. The Scenario 2 PLTS design is studied economically because the return on investment is the fastest compared to the other scenario PLTS designs. Based on the economic feasibility analysis of the investment, scenario 2 design has a Net Present Value (NPV) of Rp. 158,771,001, Profitability Index (PI) of 1.32 and a Discounted Payback Period (DPP) of 10.7 years.
ANALISIS PERBANDINGAN DAYA OUTPUT LISTRIK ANTARA PENGGUNAAN TRANSMISI GEAR DAN PULLEY PADA PROTOTYPE (PLTPH) MENGGUNAKAN TURBIN TURGO Abdi Nugraha, I. M. Tata; Arta Wijaya, I.W.; Budiastra, I.N.
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p1

Abstract

Picohydro Power Plant is one of the environmentally friendly generators that can meet the electricity needs in the vicinity, one of which is in the Kanto Lampo Waterfall Tourism area. The planning of this PLTPH prototype is carried out to meet the lighting needs in the waterfall area. This PLTPH prototype plan uses a turgo turbine and there are two transmissions that can be used, namely, gear and pulley. This study will make a comparison between gear and pulley transmissions with the direct measurement method on the prototype and aims to determine the transmission that can get the best results on the PLTPH prototype. The ratio variations used on gears and pulleys are 4:1, 4:1.3 and 4:2. The PLTPH prototype using a turgo turbine obtained the highest results at a gear ratio of 4:1 with an output power of 48.70 Watt and the resulting torque of 0.613 Nm, while the lowest results were obtained at a pulley ratio of 4:2 with an output power of 10.83 Watt and the resulting torque is 0.147 Nm.
ANALISIS RELOKASI PEMBANGKIT LISTRIK TENAGA SURYA ON-GRID KAPASITAS 75 kWp DI SMKN 1 DENPASAR Agus, M.N.; Gunawan, J.N.; Amrita, A. A. N.; Hartati, R. S.
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The solar energy potential in Bali ranges from 4.01 to 6.13 kWh/m²/day, with an average increase of 4.89 kWh/m²/day. For solutions and innovations in energy development from unlimited resources, the use of new renewable energy such as natural sources like the sun is being explored. The utilization of renewable energy sources in the production of electricity and the decision of the Minister of Energy and Mineral Resources, Ministerial Regulation ESDM No. 49 of 2018, concerns the use of rooftop solar energy systems by consumers of PT PL).. The presence of the PLTS Rooftop at SMKN 1 Denpasar has garnered attention for further analysis regarding the installed PLTS. The performance of the PLTS Rooftop system at SMKN 1 Denpasar is analyzed using PVSyst software to view production potential, then calculate performance parameters of the PLTS system compared to the production results during one year of operation. The relocation design of the rooftop PLTS was carried out using PVSyst software, and then the performance parameters in the new building were calculated. Based on the analysis, the rooftop PLTS at the building before relocation produced an energy output of 124,347 kWh/Year with a performance ratio of 85.6%. For the building after relocation at SMKN 1 Denpasar, the energy output of the PLTS is 133,977 kWh/Year with a performance ratio of 85.7%.
ANALISIS EKONOMI RANCANGAN PLTS UNTUK KAWASAN WARISAN BUDAYA DUNIA JATILUWIH Sinaga, P. M.; Ariastina, W. G.; Sukerayasa, I W.; Giriantari, I. A. D.; Setiawan, I N.; Satya Kumara, I N.
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p24

Abstract

Bali is a province in Indonesia that is progressive in utilizing renewable energy, by making a policy to create Bali Clean Energy, which aims to develop renewable energy including solar energy. Even though several Solar Power Plant developments have been carried out in Bali, it still needs to be accelerated in its application to achieve the set targets. In this study, the Jatiluwih Heritage Area was chosen as the location for designing a Rooftop solar power plant. Jatiluwih is a Village that became a World Cultural Heritage designated by UNESCO in 2012. The methods used in this research are interviews, literature studies, and scientific studies based on related journals. This study uses two scenarios, namely the load usage scenario and the roof area scenario. There are 45 buildings that have tourism activities in the Jatiluwih DTW area, with a daily electricity requirement of 225.37 kWh/day. Based on the criteria for installing a Rooftop Solar Power Plant, there were five buildings that met the criteria, namely Dukuh Batur Villa, Teras Subak Homestay, Warung Dhea, Iga Lawar Restaurant, and Bhuana Agung Restaurant. Based on the investment feasibility study using the Net Present Value, Profitability Index, and Payback Period methods, it shows that the investment in designing a Rooftop Solar Power Plant with a scenario based on load requirements has 2 feasible buildings, namely the Iga Lawar Restaurant and Bhuana Agung Restaurant, and based on the roof area scenario it shows the design investment Solar Power Plant Jatiluwih World Cultural Heritage Area is not feasible to implement.
POTENSI PLTMH DI BENDUNGAN SIDAN, DESA BELOK SIDAN, KABUPATEN BADUNG Natih Evan Bayu, I D G; Sukerayasa, I W; Indra Partha, Cok Gede
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p15

Abstract

The potential of new renewable energy is highly needed to support Clean Energy Bali, and one of the viable energy sources is Micro Hydro Power Plant (PLTMH). The design of the Sidan Dam PLTMH is based on the construction of the Sidan Dam area in Belok Sidan Village, Badung Regency. The planning of the Sidan Dam PLTMH only extends to the construction of the penstock. In this Capstone Project, the design of the Sidan Dam PLTMH utilizes water discharge and head height data from the Sidan Dam planning. This data is used to determine the design, type of water turbine, dimensions of the water turbine, and to determine the appropriate generator capacity. The calculation results indicate that the Sidan Dam PLTMH has a potential capacity of 290.83 kW with a Francis turbine type and a generator capacity of 472.59 Kva. It is estimated to generate an annual energy output of 1,783,396 kWh with a capacity factor 70%.
RANCANG BANGUN SISTEM KENDALI TINGGI MUKA AIR PADA TANDON DENGAN WATER LEVEL CONTROL OMRON 61F-G-AP BERBASIS INTERNET OF THINGS (IOT) Ma’aliyal Ulya, Ahmad; Duta Nugraha, I Putu Elba; Raka Agung, IGAP.
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

The importance of maintaining the expansion of the water supply system needs to be increased to provide each individual's daily clean water needs. The Agroindustry was reliable in providing clean water itself. Sekar Anugrah Penglipuran was one of the Agroindustry in Penglipuran, Bangli that required a huge water supply. This issue could be supported by applying water level control technology to prevent wasting water. Water level control (WLC) is a modern technology system that is able to control and maintain the water capacity level as required automatically. This research aims to analyze the working and wiring of the IoT-based WLC Omron 61F-G-AP and its application in the agro-industrial sector of Sekar Anugrah Penglipuran. This research includes the design and construction of a control system with planning, design, and testing stages for 7 days with technical analysis. Based on the test, there is a difference in the results of the volume calculation with data obtained from the Thingspeak website. The value of volume differences between manual calculation and IoT system calculation because there is a decimal scale in the manual calculation and IoT system calculations are integer so it produces differences in calculation.
RANCANG BANGUN PURWARUPA TOILET PORTABLE BERDINDING PDLC DENGAN SISTEM SOLAR TRACKING BERBASIS ESP32 Devia, Regina; Nugraha, Bayu; Pranita, Sri; Raka Agung, I GAP; Setiawan, I N
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p6

Abstract

Indonesia, as an archipelagic country in the Pacific region, is vulnerable to various natural disasters such as earthquakes, tsunamis, and volcanic eruptions. In such situations, infrastructure is often damaged or inaccessible. Therefore, a research team has designed an innovative sanitation solution in the form of a portable toilet with solar tracking and PDLC walls for disaster-prone evacuation areas. This Capstone Project aims to design a portable toilet that can generate independent electrical energy to operate the entire system within the toilet. The data collection methods involve observations and testing of hardware and software components, such as PIR sensors, ultrasonic sensors, DC voltage of 25 volts, ACS712 current sensors, I2C LCD display, and testing the accuracy of command timing from the NTP server sent by ESP32 to Arduino. Referring to research [5] where the solar panel angle can be adjusted by 20° every hour using LDR sensors, the research team developed the study using an NTP program that moves every hour from 09:00 to 17:00 to maximize solar energy absorption. A 20 Wp solar panel reaches its maximum power of 16.46 watts at 11:00 AM local time, and a 12V 9Ah battery can be used for 3 hours and 10 minutes with a 3 Ah load. This portable toilet can operate automatically and be monitored via a mobile phone. Further research is recommended to include detailed electronic component analysis and the implementation of a 2-axis tracking system.
RANCANGAN PLTS ATAP DI GEDUNG RUMAH JABATAN GUBERNUR PROVINSI BALI Ayu Anggasari, Ni Luh; Dwi Giriantari, Ida Ayu; Sukerayasa, I Wayan
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p15

Abstract

Indonesia aims to achieve a 23% utilization of new renewable energy (EBT) by 2025. This form of clean and sustainable energy derives from sources such as solar, water, mini/microhydro, geothermal, and bioenergy, all of which have minimal to no environmental impact. The Provincial Government of Bali has introduced a directive to promote the adoption of EBT. The choice of the Bali Provincial Governor's Office for this initiative stems from its significant electricity consumption and its potential to serve as a model for photovoltaic solar (PLTS) development in Bali.This study delves into the conceptualization of a PLTS system installed atop the Bali Provincial Governor's residence. The design process involves determining the appropriate quantity of solar panels for the roof, evaluating the potential electrical output of the PLTS, selecting the specific PLTS model and inverter for implementation. To aid in this endeavor, the Helioscope software is employed, aiding in the visualization of the PLTS layout and its potential energy generation.Four distinct scenarios were considered in this study: In Scenario 1, a configuration employing 114 solar modules with a total capacity of 63.7 kWp is proposed, utilizing a single inverter with a capacity of 66 kW. Scenario 2 adopts a setup with 64 solar modules, yielding 35.3 kWp in capacity, coupled with a single inverter boasting 36 kW capacity. Scenario 3 envisions the installation of 142 solar modules generating 78.1 kWp, harmonized with a lone 80 kW inverter. Lastly, Scenario 4 opts for 64 solar modules producing 35.3 kWp, each equipped with 22 microinverters with a capacity of 2000 Watt.
SIMULASI DAN ANALISIS DAMPAK PLTS DAN BESS TERHADAP DROP TEGANGAN PADA SISTEM KELISTRIKAN NUSA PENIDA Pranipata, IND; Kumara, INS; Sukerayasa, IW; Giriantari, IAD; Setiawan, IN; Ariastina, WG
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Nusa Penida, Nusa Ceningan, and Nusa Lembongan or known as Tiga Nusa are very famous tourist destinations in Bali Province. The growth of tourism in Tiga Nusa has resulted in demand for electrical energy increasing every year. In order to meet the electrical energy needs in Tiga Nusa, the PLN continues to strive to improve the quality of the Nusa Penida electricity system. One of PLN's efforts is to build a Solar Power Plant that is interconnected with BESS. This research aims to analyze the effect of Solar Power Plant and BESS on voltage drops in the Nusa Penida electricity system. This research was carried out by simulation using electricity system dynamic simulation software. The simulation will be carried out with 3 scenarios. The results of this research are that Solar Power Plant interconnected with BESS has a good influence on the Nusa Penida Electricity System, as evidenced by the simulation results for scenarios 2 and 3 which have better voltage drop values compared to scenario 1.
PERANCANGAN PLTMH SUNGAI YEH HA DI KARANGASEM DENGAN TURBIN CROSSFLOW Virgunia, D. A.; Sukerayasa, I W.; Ariastina, W. G.; Setiawan, I N.; Giriantari, I. A. D.; Satya Kumara, I N.
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p29

Abstract

Yeh Ha River in Ababi Village, Karangasem Regency, Bali, is a river that originates from the Yeh Ha springs and is used as a bathing place. This river has the potential for a new renewable energy source that can be utilized for the Micro Hydro Power Plant (MHPP). Discharge measurements were carried out for a week on one of the Yeh Ha spring source channels during the dry season. The results showed an average discharge of 0.201 m3/s. The discharge data used is the minimum potential energy that can be absorbed. Based on the measured discharge data and the used head of 4.6 m, the Tanaka Suiryoku Turbine Selection Chart shows that the crossflow turbine meets the turbine selection criteria. The results of the analysis and calculations show that the available power at the turbine is 8 kW with an efficiency of 80%. A 3-phase synchronous generator with a permanent magnet rotor was selected based on a comparison of the types, specifications, and characteristics of the generator to match the turbine capacity. The output power generated by the generator is 6 kW with a rotational speed of 1500 rpm and a generator efficiency of 90%.

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