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PERBANDINGAN METODE KLASIFIKASI SUPPORT VECTOR MACHINE DAN NAÏVE BAYES PADA ANALISIS SENTIMEN KENDARAAN LISTRIK Ni Wayan Ernawati; I Nyoman Satya Kumara; Widyadi Setiawan
Jurnal SPEKTRUM Vol 10 No 3 (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.i03.p12

Abstract

Electric vehicles are one of the solutions that can be used to deal with the problem of greenhouse gas emissions. Switching to electric vehicles can be an effective solution because electric vehicles have many advantages. However, the acceptance of electric vehicles in Indonesia depends on the opinions or sentiments given by the community. Sentiment analysis can provide a specific picture of how the sentiment or opinion given by the Indonesian people towards electric vehicles. The sentiment analysis process is carried out using the Python programming language. This research compares SVM and Naïve Bayes methods in sentiment analysis in terms of accuracy and time efficiency. A total of 717 data were used as test data and SVM correctly classified 150 negative data, 152 neutral data, and 277 positive data. Meanwhile, Naïve Bayes correctly classified 166 negative data, 143 neutral data, and 282 positive data. training time required for the SVM method is 37.42 seconds while Naïve Bayes is 0.10 seconds. Naïve Bayes is the best method in this study because of its high accuracy and fast training time.
PERANCANGAN SISTEM POMPA AIR SUNGAI YEH HA UNTUK MEMENUHI KEBUTUHAN AIR MASYARAKAT DESA ABABI Derren, M.; Ariastina, W. G.; Setiawan, I N.; Giriantari, I. A. D.; Sukerayasa, I W.; Satya Kumara, I N.
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Kayuan Yeh Ha serves as a clean water source located in Ababi Village, Karangasem Regency. The flow from Kayuan Yeh Ha is utilized for both bathing dan consumption by the surrounding residents. Originating from the Yeh Ha spring, Kayuan Yeh Ha is extensively utilized to fulfill the needs of the local community. In order to meet the water requirements of the local populace, a water storage tank with a capacity of 58.74 m3 was initially established to distribute water to 10 households. In the year 2020, a water wheel was employed to power a mechanical pump without electricity to fill the storage tank. After operating for one year, the water wheel experienced shaft damage, necessitating its replacement with a hydraulic ram pump. However, the hydraulic ram pump only utilizes one-fifth of the available water flow, thereby rendering it less effective. Consequently, this research aims to design an electric water pump system powered by a new renewable energy source. The implementation of this electric water pump is expected to enhance the efficiency of filling the storage tank. Based on measurements dan calculations, the micro-hydro power plant system (PLTMH) is estimated to produce a power output of 6kW. Pump selection is determined by electrical power calculations, water discharge, dan pump prices, leading to the adoption of the Pedrollo F50-160B centrifugal pump capable of delivering a water discharge of 56m3/hour at a head of 25 meters. The Pedrollo F50-160 pump utilizes a 3-phase squirrel cage induction motor generating a power output of 5.5kW. Pipe losses dan fittings are also calculated using Pipeflow Expert software, resulting in a water discharge of 31.687 m3/hour. The pump will be operated at maximum capacity for 24 hours, enabling it to deliver a water discharge of 763,620 m3/day, sufficient to meet the clean water needs of 12,277 individuals or 2,455 families. Achieving this water usage target also necessitates piping to households from the storage tank, totaling 35,900 meters in length with an 80mm diameter dan 49,100 meters of 16mm diameter piping. This system is also equipped with a variable frequency drive or inverter device to enhance the efficiency of the electric pump dan reduce starting current surges, simulated for its performance through Simulink software.
POTENSI PENGHEMATAN BIAYA TAGIHAN LISTRIK PASCA PEMASANGAN PLTS ATAP GEDUNG RUSUNAWA UNIVERSITAS UDAYANA Widiandika Putra, I Wayan Dicky; Ariastina, Wayan Gede; Dwi Giriantari, Ida Ayu; Setiawan, I Nyoman; Sukerayasa, I Wayan; Satya Kumara, I Nyoman
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.p12

Abstract

The limited availability of natural resources and the impact on the environment that regularly using fossil-based electricity become the basis for the government to develop renewable energy. One of the potential uses of renewable energy in Indonesia is a rooftop solar power plant which in its design does not require a large area of land and space for the placement of solar modules. This research designing rooftop solar power plants with an on-grid system on the Udayana University Rusunawa building with the capacity scenario of 20 kWp, 15 kWp, and 10 kWp using HelioScope. Based on the results of rooftop solar power plants production can be seen the potential cost savings of electricity bills each year. Based on the results of the design for rooftop solar power plants scenario, the number of solar modules obtained is 40 pieces, 30 pieces and 20 pieces with potential savings in electricity bill costs of Rp. 33.391.515, Rp. 28.933.478 and Rp. 23.269.285 per year.
SIMULASI INTERKONEKSI PLTS APUNG DI DANAU BATUR DENGAN PENYULANG KINTAMANI Jaya Kusuma, I Kadek Bagus; Satya Kumara, I Nyoman; Setiawan, I Nyoman
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.p35

Abstract

Lake Batur has the potential to build a floating solar power plant to improve voltage drop disturbances. The author uses three scenarios using power flow analysis and transient analysis for each scenario in Kintamani. Scenario 1 with a floating solar power plant capacity of 10 MW has a positive impact by increasing the busbar voltage value but there are reverse power conditions that can disrupt the power system at the Payangan Substation. Scenario 2 with a floating PLTS capacity of 1.2 MW has a positive impact by increasing the voltage value and does not cause reverse power at Payangan Substation. Scenario 3 with a floating PLTS capacity of 3 MW has a positive impact by being able to increase the voltage value and does not result in reverse power at Payangan GI. When the floating solar power plant loses power production, it causes a decrease in voltage value, then the system stabilizes again.
SIMULASI DAN ANALISIS DAMPAK PLTS SKALA BESAR DAN BESS TERHADAP SUSUT DAYA SISTEM KELISTRIKAN NUSA PENIDA Caesar, B; 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

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Abstract

Nusa Penida island is one of the famous tourist destinations in the province of Bali. Increased tourism activities on Nusa Penida island has led to an increase in demand for electricity. In response, PT. PLN (Persero) has made great efforts to improve the quality of the power supply system in Nusa Penida to meet the increasing energy demand. As a concrete step, PT. PLN (Persero) has established a 4,2 MWp Solar Power Plant (PLTS) and a 1,84 MWh Battery Energy Storage System (BESS) to provide electrical energy to Nusa Penida. This research aims to analyze the impact of PLTS and BESS on power losses in the electrical power supply system in Nusa Penida. The electrical system of Nusa Penida simulated using the demo version of the power system dynamics simulation software. The simulation electrical system of Nusa Penida conducted under four different conditions. The results of the simulation show that both PLTS and BESS have a positive impact on power loss of electrical system in Nusa Penida.
PERANCANGAN SOLAR IRRIGATION PUMP DENGAN SISTEM SOLAR TRACKER DI SUBAK MALIKODA Windradharama W., A.A. G. Guna; Satya Kumara, I Nyoman; Setiawan, I Nyoman
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.p26

Abstract

Water is a fundamental necessity for agricultural land and can be obtained from various sources depending on its geographical location. The Keliki Village Farmers Group in Subak Malikoda faces the challenge of drought, leading to a shortage of water supply during the dry season. In this research, the Solar Irrigation Pump (SIP) is designed with a solar tracker system to pump groundwater with the aim of enhancing irrigation water supply for Subak Malikoda during the dry season. The design of the solar-powered irrigation pump system consists of an 18.5 kW submersible pump coupled with a 23.1 kWp PV system using 60 monocrystalline solar modules equipped with a solar tracker and utilizing a 30 kW inverter. Based on the conducted analysis, the PVSyst results show that the SIP without a solar tracker can operate for 6,067 hours with an average water discharge of 274.9 m3/day, based on the received global effective irradiation of 1765.1 kWh/m2 in one year. However, with the use of the solar tracker system, the pump can operate for 6,933 hours with a water discharge of 305.2 m3/day and global effective irradiation of 1963.8 kWh/m2 in one year. The results of the analysis conclude that the SIP with a solar tracker system is capable of operating optimally and meeting the water discharge requirements of Subak Malikoda. This positions the solar tracker system as an effective solution in enhancing the water supply for Subak Malikoda during the dry season.
ANALISIS SPESIFIKASI TEKNIS SISTEM PENGEMUDIAN ELEKTRIK PADA KENDARAAN LISTRIK BERBASIS BATERAI KOMERSIAL POPULER Syamaidzar, Ahmad Luqyanto; Putra Padang, Christian Felix; Satya Kumara, I Nyoman; I Gusti Agung Putu, Raka Agung
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.p8

Abstract

The increase in the number of motor vehicles in Indonesia has elevated the negative impact on the environment, both in terms of air pollution and global warming. According to the Ministry of Transportation (Kemhub), the number of motor vehicles in Indonesia reached 141.99 million units in 2021. The electrification of motor vehicles is one of the solutions to reduce emissions from the motor vehicle sector. This is supported by Presidential Regulation No. 55/2019 to stimulate the growth of the national battery-based electric vehicle (BEV) industry. This paper reviews battery-based electric vehicle (BEV) technology worldwide, especially four-wheeled vehicles with a high total population. The research was conducted through online surveys in 2023 using international data sources and the Association of Indonesian Automotive Industries (GAIKINDO), resulting in a database of 33 battery-based electric vehicles. From this database, it was found that the majority of electric cars purchased by the public are hatchback and sport utility vehicle (SUV) types. In terms of electric drive systems, the power capacity range of electric motors used by these vehicles is between 20 - 150 kW for hatchbacks and 100 - 406 kW for SUVs. The most commonly used electric motor type, constituting about 64%, is the Permanent Magnet Synchronous Motor (PMSM). About 70% of these vehicles use lithium-ion battery technology. The technical specifications of these popular electric cars are expected to assist stakeholders in quickly understanding the technical specifications of electric drive systems in battery-based electric vehicles, serving as a benchmark for designing electric cars suitable to meet domestic needs.
RIVIEW SISTEM PENGOLAHAN AIR PDAM TIRTA MANGUTAMA BADUNG Muhamat, Oscar; Satya Kumara, I Nyoman; Budiastra, I Nyoman
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Water treatment in PDAM is a process in providing clean water supplies for the needs of the community of the district. The quality of the water produced must meet health and environmental standards to ensure that the water consumed is safe and decent for the user. This investigation aims to conduct a review of the water treatment system with a focus on the process of treatment of clean water ranging from raw water taken from the water tank to clean water that can be used by consumers. This process takes place at the intake where the raw water is sucked with two turbine pumps. Then the water is drained to the WTP (Water Treatment Plant) where the wTP is the main clean water treatment building. On the way to WTP there is a chemical process where water is mixed with poly aluminium chloride (PAC) fluid and chlorine to kill bacteria and purify the water. There are several parts of the room that process into clean water thats. the flokuator, then the sedimentation process, after the sedmentation process is continued to the filtration/filter process, in this process the filter uses silica sand as its filter so that the water is free from the dirt of the Sedimentation result, then after being clean water will enter the shelter or reservoir to continue to the customer's distribution system assisted by the booster pump.
PERANCANGAN PLTS TERAPUNG DI BENDUNGAN SIDAN KABUPATEN BADUNG Paisal, Muhammad; Setiawan, I Nyoman; Satya Kumara, I Nyoman; Dwi Girantari, Ida Ayu; Sukerayasa, I Wayan; 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.p18

Abstract

Potential of renewable energy is essential to support Bali Clean Energy, one of the energy that can be exploited is Solar energy. However, by 2023 the potential has been exploited only 1,48 percent. One of the reasons why Solar Plant construction in Bali is slow is because it is difficult to find land large enough to build Solar Plant on a large scale. However, solution to overcome land constraint is to utilize the water body through floating Solar Plant application. In the Project, the Floating Solar Plant Sidan Dam utilized body of the Water Dam and work pictures from the Planing of the Sidan Dam, with such data being used to determine the Floating solar Plant System in Sidan Dam. The design results showed that floating Solar Plant in Sidan Dam has a potential capacity of 1.45 MWp with a total of 2640 units solar panel and uses 12 units of inverters of 1.100 kW capacity. The energy production produced by the floating Solar Plant in a year was 2.564.007 kWh.
PERANCANGAN PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) PADA ATAP GEDUNG PARKIR BANDAR UDARA INTERNASIONAL I GUSTI NGURAH RAI Wira Dharma, Gede Agus; Giriantari, Dwi; Sukerayasa, I Wayan; Setiawan, I Nyoman; Ariastina, Wayan Gede; Satya Kumara, I Nyoman
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Using sustainable energy as a source of electrical energy is a safe way to increase ecosystem energy. One of them is the utilization of photovoltaic directed energy by upgrading the PLTS on top of the structure as a mechanism for introducing photovoltaic modules. The study finalized the plan to install PLTS on the roof of the I Gusti Ngurah Rai Airport parking lot as a source of electrical energy to reduce PLN electricity bills. The I Gusti Ngurah Rai Airport Parking Roof Solar Power Plant uses a battery-free on gridsystem with 600 units of 555Wp monocrystalline solar-based modules and four 100kW inverter units. The solar power plant to be built on the car park of Terminal I Gusti Ngurah Rai will have a capacity of 333kWp and will produce 604.929kWh of energy annually. The required speculation cost is Rp 3.004.620.000 and payback period for 6 years.
Co-Authors A. A. Ngurah Bagus Budi Nathawibawa A. Ibi Weking A. Jagad Miftahul Rizqy A.A. Gede Ari Pawitra Putra Abid Surya Bimantara Abinanda , IKPT Adhi Permana Aditya Perdana Putra Purnomo Adyana Putra, I Kadek Agus Mahardiananta, I Made Agus Satrya Wibawa Agus Selamet Duniaji Aldy Allan Ghozali Amien Harist Hardiansyah Ariastina, WG Aries Arimbawa Asep Andang Bayu Widiarsa Kadek Bradley Axelius C. G. Indra Partha Caesar, B Cecep Yudhie Rachmat D. Sitompul D.C. Khrisne D.Y. Manurung Darmawan, I Gede Hadi Derren, M. Dewa Nyoman Tri Budiantara Dewa Putu Ari Laksana Dharmawan, I Made Diky Dwi Girantari, Ida Ayu Dwi Giriantari , Ida Ayu Eka Yulia Indri Christanti Fajar Tri Prabowo Giusna Dipankara Kusnandar Govinda Riawan H. Kristiawan Harahap, RS Hardiansyah, Amien Harist Hasan Dedy Sudono Hendri Noviyanto Pratama I Dewa Gde Yaya Putra Pratama I Gde Ari Biantara I Gede Civavisna Brahma I Gede Dyana Arjana I Gede Hadi Darmawan I Gst Agung Putu Raka Agung I Gusti Agung Putu Raka Agung, I Gusti Agung Putu I Gusti Agung Putu, Raka Agung I Gusti Made Ngurah Desnanjaya I K Agus Setiawan I Kadek Hendy Wijaya I ketut Gede Darma Putra I Ketut Wiryajati I Made Aditya Nugraha I Made Arsa Suyadnya I Made Dwi Jendra Sulastra I Made Ginarsa I Nyoman Budiastra I Nyoman Budiastra I Nyoman Setiawan I Nyoman Setiawan I Nyoman Yudiyana I Pt Agus Surya Adi P I Putu Elba Duta Nugraha I Putu Gde Weda Setyawan I Putu Gede Budisanjaya I Putu Gede Iwan Dwipayana I Putu Indra Saputra I Putu Yudi Pramayasa I W.Y.M. Wiguna I Wayan Indrayana, I Wayan I Wayan Sukerayasa I Wayan Sukerayasa i wayan swi putra I Wayan Swi Putra I. M. R. A Anantajaya I. P. Dharmawan I.G.A.B. Adiputra I.G.A.D. Sasmita I.G.W. Artana I.N. Setiawan I.P.A. Wiranata I.W.B. Darmawan I.W.G.A Anggara Ida Ayu Dwi Giriantari Ida Ayu Putu Febri Imawati Ida Bagus A. Swamardika Ida Bagus Gede Manuaba Ida Bagus Gede Widnyana Putra Ida Bagus Ketut Sugirianta Ida Bagus Leo Mahadya Suta Ida Bagus Putra Setanu M Irwan Octopianus Silaban IW Gunarta J. Pangaribuan Jaya Kusuma, I Kadek Bagus Julius Mahendra Sihombing Junantara, I Ketut Adi Kadek Hari Merta Kadek Sumariana Ketut Vidhia Kumara Komang Bagus Dwi Widiatama Putra Komang Oka Saputra Kresna Aditya, I Putu Gede Lely Meilina Lie Jasa Lintang Pramudya Luh Ayu Sutawati M.R. Wicaksana M.T. S.T. I Wayan Sutaya . Made Dwi Mulyawan Made Pradnyana Ambara, Made Pradnyana Made Puji Dwicaksana Made Sudarma Mas Nyoman Ngadeg A. C. Moch. Farhan Arieffadillah Muhamat, Oscar Muhammad Malik Al Falah Mustika Wiyasa, I Kd N. A. Kartono N. M. A. Wijaya N. Surya Gunawan Natapathy, Ranga Bayu Ni Luh Gede Pivin Suwirmayanti, S.Kom, MT, Ni Luh Gede Pivin Ni Made Ary Esta Dewi Wirastuti Ni Made Neli Lestari Ni Putu Amanda Saraswati Ni Wayan Ernawati Ni Wayan Sri Ariyani NM Karmiathi NMAE Dewi Wirastuti Oswald Mangatur, Christian Oya Iman Sanjaya P.G.G. Priajana Paisal, Muhammad Pande K. B. Sutawan Partogi Manalu, Eli Musa Reja Pramudya, Lintang Pranipata, IND Purna Suartawan, Gede Purnawati, Ita Ayu Purwania Ida Bagus Gede Putra Padang, Christian Felix Putu Martha Risnadinata R. Sapto Hendri Boedi Soesatyo Radha Kurniawan Raka Agung, I G A Putu Rosalia Hadi Rukmi Sari Hartati Rukmi Sari Hartati Sandrawati, Syafiatun Servinus Servinus Servinus, Servinus Setiawan, I N. Setiawan, IN Simon Junior Sinaga, P. M. Siregar, Jhon Septin Maourisdo Sudarma Made Sukerayasa, IW Surung Rafael Sihaloho Syamaidzar, Ahmad Luqyanto Tjok Gede Indra Partha Virgunia, D. A. W G. Ariastina W Widiadha Wayan Gede Ariastina Wayan Gede Ariastina Widagdo, Aris Widiandika Putra, I Wayan Dicky Widyadi Setiawan Windradharama W., A.A. G. Guna Wira Dharma, Gede Agus Wulandari, NKN Yoga Divayana Yogiswara Dharma Putra Yohana Fransisca Sarumpaet Yoppy Hartantio