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Jurnal SPEKTRUM

spektrum
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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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ANALISIS LIGHTING ARRESTER UNTUK MENGAMANKAN BUSBAR 150 kV TERHADAP GANGGUAN SURJA PADA GIS PECATU I Putu Agus Kumara Putra; I Gede Dyana Arjana; Cok. Gede Indra Partha
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

GIS (Gas Insulated Switchgear) Pecatu is one of the GI built by PT. PLN (Persero) toprovide energy continuity to its customers. In the GIS Pecatu there is no lighting arrester (LA)because the equipment in the GIS Pecatu is located indoors. Where there is only LA from thedirection of the GI Nusa Dua to the GIS Pecatu with a distance of 12.08 km, so it is necessaryto do study to find out whether the LA from the GI Nusa Dua direction to the GIS Pecatu canprotect the busbar from the traveling wave of lightning surge .The results of the analysis showed using the software simulation method that LA fromthe direction of the GI Nusa Dua to the GIS Pecatu has been able to protect the GIS Pecatubusbar. Simulation results obtained that the current passing through the 150 kV busbar of 1,219kA and the voltage on the busbar during a lightning surge of 4 kV. The voltage on the busbarand the current through the busbar during a surge is still within the tolerance of the maximumsystem voltage of 170 kV and the current ratio of 4 kA.

PERKEMBANGAN RISET DAN PRODUK KOMERSIAL SISTEM PEMBERSIH PANEL SURYA Muhammad Malik Al Falah; I Nyoman Satya Kumara; Wayan Gede Ariastina
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The cleanliness of the solar panels is one of the factors that affect the energyproduction of a solar power plant. Solar panel cleaning is a solution to keep solar panels cleanso that energy production can be optimal. This article reviews research developments andcommercial products for solar panel cleaning, with the result showing various applicabletechniques and commercial products for solar panel cleaning purposes. There are two distincttechniques used in solar panel cleaning, manual and automatic. The manual cleaning method isa method that conducts any action to operate the system manually by humans. The automaticcleaning method is a method that is controlled directly by the system without the need forhuman interference. Commercial solar panel cleaning products include telescopic polesequipped with brushes and water pumps, a robot that is permanently attached to the solar panelsupport construction equipped with dry clean and water clean methods, a robot with portablesystems using long roller brushes, a convenient robot which has a remote vacuum cleanersystem, to a mobile cleaning system using a robotic arm.

ANALISA PENGARUH PENGOPERASIAN FILTER AKTIF TERHADAP RUGI-RUGI DAYA DAN DERATING TRAFO PADA SISTEM KELISTRIKAN DI RS BIMC NUSA DUA A.A. Gede Marta Pratama; I Wayan Rinas; Anak Agung Maharta Pemayun
Jurnal SPEKTRUM Vol 8 No 3 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Nonlinear loads are harmonic current sources for utilities. High harmonic levels greatly increase the loss of electrical energy. The quality of electric power is determined by the parameters of power losses that appear in the electrical system of BIMC Nusa Dua Hospital due to harmonic distortion. In this study, THD analysis was carried out based on the results of measurements and simulations according to the IEEE 519-2014 standard, analysis of power loss due to THD current due to non-linear loads, and analysis of power loss after installation was carried out. Active filter, calculation of the working capacity of the transformer before and after installing an active filter.

STUDI EKONOMIS PENGGUNAAN PLTS ROOFTOP 3 KWP FRAMELESS WITH ON-GRID SYSTEM PADA PELANGGAN R/4400 VA I Komang Widi Astawa; Ida Ayu Dwi Giriantari; I Wayan Sukerayasa
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

PLTS is one of the renewable energy technologies sourced from sustainable energy,namely the sun. The potential for solar energy is quite good, making Bali one of the targets forthe energy mix. This research focuses on the production of PV mini-grid energy, savingelectricity costs and finding out whether it is profitable or not to invest in the location, especiallyin one of the SARBAGITA areas located in Perum Nuansa Jimbaran from an economic point ofview. The method used is an economic analysis of investment feasibility, with supportingindicators such as DF, NPV, BCR, DPP, LCC, COE and CRF by considering economic aspects.Yield of this study found that the selling price of PLTS power to PLN was IDR. 1,444.70/kWh,investment cost PLTS is IDR. 61,274,248, it can generate savings of IDR. 5,078,700/year andcumulative income for the 25th year is IDR. 109,341,618. Price sensitivity is very influential onthe cost of PV mini-grid revenue. COE at the energy selling price of IDR 2,888/kWh, can alsoshow the feasibility of the investment so that the investment can be said to be economicallyprofitable.

ANALISIS SISTEM PENGAMAN BACKUP UNTUK MENGAMANKAN BUSBAR 150 Kv TERHADAP GANGGUAN DI GIS PECATU I Nyoman Wardana; I Gede Dyana Arjana; Cok. Gede Indra Partha
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

High power needs in badung area, especially Pecatu and Nusa Dua resulted in theneed for GIS development to increase power supply. GIS Pecatu uses a double busbar withOCR as its Backup safety, if one of the busbars is disrupted and there is no protection rele thatsecures the busbar, it will result in continuous power flow is disrupted.In this study, an analysis of the rele busbar setting and the appropriate protectionsetting as a reference protection system in GIS Pecatu. The results of the calculation of currentsetting obtained the working current value (Iset) OCR of 1339 A and (Iset) GFR 223 A anddelay time 0.53 seconds, actual working time rele 0.35 Standard Inverse, and the value of shortcircuit interference current calculation from PLN 11.58 kA and based on simulation resultsobtained 11.46 kA with a percentage of errors of 0.12%.

ANALISIS PENGARUH PENAMBAHAN GEARBOX PADA TURBIN ARCHIMEDES SCREW UNTUK PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (PLTMH) I Gede Ngurah Arya Raditya; Lie Jasa; I Wayan Arta Wijaya
Jurnal SPEKTRUM Vol 8 No 3 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Utilization of irrigation flows as a source of electrical energy is not too much, because irrigation flows have low head heights so it's hard to do the design and type of power plant used. In addition, the water discharge in the irrigation canal is also a problem because the water seed in the irrigation canal is not always constant which is influenced by seasons and weather factors. In this study, we will discuss the effect of adding a gearbox to the Archimedes screw turbine on the output value of the generator such as electric current, voltage, efficiency, and torque. This micro hydro power plant uses an Archimedes screw turbine which has 9 blades with an angle of 24o and a blade thickness of 0.25 cm. on the gearbox used using a spur gear type which has a total ratio of 4: 9. The results of research conducted on irrigation lines in Munggu Village, Mengwi District, Badung Regency, got the highest rotation results, namely 160.7 rpm at the turbine, 882.4 at gearbox and 1013, 8 rpm on the generator. The highest voltage and current generated by the generator are 11.15 volts and 0.66 amperes. The torque obtained is 0.45 Nm and the highest efficiency is obtained at 0.00638%.

RANCANG BANGUN MODEL PENGIDENTIFIKASI SUARA HURUF HIJAIYAH DENGAN METODE MEL FREQUENCY CEPSTRUM COEFFICIENT DAN CONVOLUTIONAL NEURAL NETWORK Robbani Punggawa Arcapada; Widyadi Setiawan; I Made Arsa Suyadnya
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Learning the Qur'an is a necessity for a Muslim, because the Qur'an acts as a guideand way of life. One thing that is learned in the Qur'an is how to pronounce Hijaiyah letters orMakharijul letters. In learning Makharijul Letters it takes an ustaz or accompanying teacher whois limited by distance and time. To overcome the limitations of distance and time, a learningapplication model is needed that can be accessed without the limitations of distance and thetime. This is studied aim to develop the Hijaiyah letter recognition model using the MelFrequency Cepstrum Coefficient (MFCC) and Convulational Neural Network (CNN) methods.Based validation results, the model built using the MFCC and CNN methods can identify theletters read with an accuracy of 49.1%. Then based of the test result with Confusion Matrix, thismodel have a precision value of 50%, recall is 53%, and F-Measure is 0.514.

STUDI TEKNIS PLTS ROOFTOP 3KWP FRAMELESS WITH ON-GRID SYSTEM DI LINGKUNGAN KORI NUANSA JIMBARAN I G.N.A.B Rama Wahyu Dewangga; Ida Ayu Dwi Giriantari; I Wayan Sukerayasa
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Solar light is an environmentally friendly renewable energy. According to RUEN, BaliProvince has a fairly large potential for solar light utilization, namely 1,254 MW with a target forPLTS development in 2025 of 8.62% or 108.2 MW of its total potential. Therefore, this researchfocuses on the utilization of PLTS Rooftop on-grid as an energy supply at Kori NuansaJimbaran's residence which explains the specifications of the installed PLTS materials andcomponents, as well as the design of the PLTSinstallation in Rooftop terms of technical termsaccording to the requirements of PT. PLN (Persero). The method used is literature review,observation, data collection, data analysis and conclusions. The results showed that the totaldaily load calculation was 26,151 W/day and the total daily energy that could be generated fromthe calculation was 14.58 kWh/day with the measurement results at the research location of13.4 kWh/day where there was a difference of 1.18 kWh caused by due to losses in the system.When viewed from the total daily load the PLTS system has not met the needs, but functionallythe PLTS system is intended for daytime loads so that the needs are appropriate. Optimalinclination angle of 14.66calculation results areº however on measurementsusing a protractortool obtained18º this because the angle of inclination of the solar panels follows the direction ofthe slope of the roof. The installed PLTS design has met the standards of the Minister of Energyand Mineral Resources No. 49 of 2018 and has received an Operational Worthiness Certificate(SLO) from PT. PLN (Persero).

RANCANG BANGUN SISTEM MONITORING KUALITAS AIR UNTUK PEMBUDIDAYAAN IKAN PATIN BERBASIS INTERNET OF THINGS (IOT) Willy Susanto; Gede Sukadarmika; Widyadi Setiawan
Jurnal SPEKTRUM Vol 8 No 3 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The design of this device will help people who want to cultivate the pangas catfish by monitoring water quality based on predetermined parameters. This water quality monitoring system device will carry out water quality readings for the farming with temperature sensor, pH sensor, and turbidity sensor. The results which gained from the sensors will be processed by NodeMCU that is used for the microcontroller. The final results of the data obtained will be processed by the microcontroller NodeMCU and will be sent to the IP Address which is supplied by the provider and will be displayed by the device that had been connected to the IP Address provided. From the results of the overall tool testing, this system can work well, thus it can detect good water quality and warning water quality for pangas catfish farming and also send the data to the web server through web browser’s application in both smartphones or laptop/pcs if the quality of the water in a “good” (save) or “warning” condition.

STUDI KOORDINASI SISTEM PERALATAN PROTEKSI PADA PENYULANG PIDADA UNTUK MENDAPATKAN SETTING PENGAMAN YANG SELEKTIF Kadek Adiyaksa Pramana; I.B Gede Manuaba; A.A Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

An electric power distribution system must be able to provide electricity to customers. So thatthe company as a provider is required to provide the best for its customers by increasing thereliability of the distribution system. The more customers who use electricity, the greater the possiblefault current, therefore it is necessary to calculate the protection in order to minimize the occurrenceof short circuit disturbances. The protection used on the Pidada feeder is Overcurrent Relay (OCR)and Ground Fault Relay (GFR), this protection relay is used to coordinate current settings inaccordance with applicable standards and can overcome short-circuit fault currents. In this research,a study of the coordination of the Pidada feeder's OCR and GFR settings was conducted using theDigSILENT PowerFactory 15.1.7 application. Calculations were carried out using the zone divisionmethod on the feeder. based on the results of the study, it was found that the Pidada feeder was 0.2s, the Bulu Indah recloser was 0.1 s and the Padang Udayana recloser was 0.02 s. Then on and theground fault relay (GFR) obtained results on the Pidada feeder 0.2 s, Bulu Indah recloser 0.1 s andPadang Udayana recloser 0.08 using standard inverse characteristics. The results of this study arein accordance with the applicable standards, where the standard used is IEC 60255 with a dradingtime of 0.3-0.5 seconds.

Page 47 of 68 | Total Record : 677

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Contact Name
Nyoman Gunantara

Contact Email
gunantara@unud.ac.id

Phone
+6281558140279

Journal Mail Official
gunantara@unud.ac.id

Editorial Address
Program Studi Teknik Elektro Fakultas Teknik - Universitas Udayana d/a. Kampus Bukit Jimbaran Bali - 80364 Phone/ Fax: +62 361 703315

Location
Kota denpasar,

Bali

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Nyoman Gunantara

Contact Email gunantara@unud.ac.id

Phone +6281558140279

Journal Mail Official gunantara@unud.ac.id

Editorial Address Program Studi Teknik Elektro Fakultas Teknik - Universitas Udayana d/a. Kampus Bukit Jimbaran Bali - 80364 Phone/ Fax: +62 361 703315

Location Kota denpasar, Bali INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Nyoman Gunantara

Contact Email
gunantara@unud.ac.id

Phone
+6281558140279

Journal Mail Official
gunantara@unud.ac.id

Editorial Address
Program Studi Teknik Elektro Fakultas Teknik - Universitas Udayana d/a. Kampus Bukit Jimbaran Bali - 80364 Phone/ Fax: +62 361 703315

Location
Kota denpasar,

Bali

INDONESIA