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Jurnal 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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PERGARUH_PENGOPERASIAN_FILTER_AKTIF_BERBASIS _KONTROL_PID _TERHADAP_KAPASITAS KERJA TRANSFORMATOR DISTRIBUSI DI GEDUNG_ STUDENT_CENTER_UNIVERSITAS_UDAYANA Satriyo Agung Pribadi; I_M. Suartika; I_G_N. Janardana
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The transformer is one of the equipmen for distributing electrical_energy from_mediumvoltage 20 kV to low voltage 380/220 V. Disturbance in the transformer_can_cause_Lossesso that it can disrupt the flow of electric power to consumers. Harmonics_are disturbancescaused by the operation of non-linear loads. This study aims to determine the effect of THDion power Losses and working capacity of transformers at Udayana University Student CenterBuilding with harmonics in the R phase of 10.91%, the S phase of 11.38%, and_the T phase of17.91%. The method used is to perform simulations andanalysis_with_the_results_of_harmonic measurements in Existing conditions, using an activefilter, and an active PID-based filter using the Matlab application. Very optimal results wereobtained using a PID-based active_filter with the results of R = 0.31%, S = 0.30%,_T =0.35%,_and the decrease in the working_capacity_of_the_transformer_decreased_to1%,_according _to_the_ideal_value.

REVIEW APLIKASI SENSOR PADA SISTEM MONITORING DAN KONTROL BERBASIS MIKROKONTROLER ARDUINO I. M. R. A Anantajaya; I. N. S. Kumara; Y. Divayana
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Arduino microcontrollers have been widely used in research and society. The Arduino isequipped with one or more physical sensors to convert physical quantities into electrical signalsthat can be processed by the microcontroller. This paper reviews sensors, types of Arduino, andtheir application as a monitoring system. Data were obtained from platforms discussing onlineArduino projects, scientific articles, electronic/micro-electronic component manufacturer sites,and other reliable sources. The results show that the sensors that are commonly used includetemperature and humidity sensors DHT11, DHT22, Thermistor and LM35, limit switch touchsensors, proximity sensors HC-SR04, and Paralax PIR, gas sensors MQ2, MQ3, MQ5, MQ6,MQ7, MQ8, and MQ135 correspond to detected gases, ADXL345 and A3144 acceleration andmagnet sensors, TCS3200 and TCS 34752 color sensors, KY-026 and Robotdyn IR firesensors, KY-022 and KY-005 Infrared sensors, LDR and TSL2561 light sensors, voltage-currentsensors ACS712 and PZEM-004T, and heart rate sensors KY-039 and MAX30102. While themicrocontrollers that are often used include Arduino Uno, Arduino Nano, Arduino Mega, andother microcontrollers. Applications that have been developed include applications in the fieldsof health, agriculture and farm, creation of robots, security to vehicles.

KOMBINASI LA DAN FCO SEBAGAI PENGAMAN TRANSFORMATOR DISTRIBUSI DI PT. PLN (PERSERO) AREA BALI SELATAN I Putu Adi Sumastra; I Gede Dyana Arjana; I Wayan Rinas
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The 20 Kv distribution network at Dewa Ruci has 61 distribution substations using the SUTMnetwork with AAAC conductors 1 x 150 mm², because distribution substations are placed in theopen, lightning surge disturbances and overloads that result in damaged transformers,transformers need protection against disturbances, so selected LA placement before and afterFCO to protect the transformer from lightning surge interference with a fast 4/10 us wavepropagation. Placement of LA before the FCO with a distance of 2 meters from the transformerthere is a voltage increase of 89.3515748 kV with a working voltage of LA 87 kV for a LAprotection factor of 95.7 kV, the possibility of LA failing to secure the transformer. Placement ofLA after FCO with a distance of 0.3 meters from the transformer there is a voltage increase of13.40273622 kV still at the working voltage and LA protection factor so that the transformer isstill safe.

PERANCANGAN SISTEM MONITORING DAN KONTROL KUALITAS AIR SERTA PEMBERIAN PAKAN OTOMATIS PADA BUDIDAYA LELE BIOFLOK BERBASIS INTERNET OF THINGS Gde Dendy Denhero; I Putu Elba Duta Nugraha; Lie Jasa
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Cultivation with a biofloc system has several advantages and disadvantages. Biofloccatfish cultivation technology is a technique to balance carbon and nitrogen levels in water toimprove pond water quality. However, cultivators must make observations in the cultivationpond water more often and carefully in order to prevent the increase in nitrogen levels. So,referring to this, a monitoring and control system for water quality and automatic feeding onbiofloc catfish cultivation was designed. The research was conducted by applying theexperimental method, in which the system is divided into three subsystems, namely waterquality monitoring, automatic water replacement, and automatic feeding. The results obtainedfrom conducting this research are in the form of tool trial data which will then be compared withdata from the program that has been made, as well as performance data from the automaticwater replacement subsystem and automatic feeding subsystem which were carried out for 5consecutive days. The conclusion of this research is that the design of a water qualitymonitoring and control system and automatic feeding on biofloc catfish cultivation based on theInternet of Things has been successfully made. In the automatic water replacement subsystem,the average relative error is 2.75%. In the automatic feeding subsystem, the average differencein feeding time is 14.5 seconds and the average relative error is 3.3%.

POTENSI BANGUNAN PARKIR SEBAGAI PEMBANGKIT LISTRIK TENAGA SURYA ATAP I Gde Ari Biantara; Nyoman Satya Kumara; I. A. Dwi Giriantari
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Solar Power Plant (PLTS) is a renewable energy that converts sunlight into electricity.However, the construction of PLTS requires a large area of land so that for urban areas it is noteasy to get the required land. One of solution to this problem is to use the roof of the parkingbuilding as a rooftop solar power plant, the energy produced by the rooftop solar power plantcan be exported to the network because generally the energy demand for parking buildings isnot much. This paper discusses PLTS on the roof of parking buildings that have been built allover the world. The results of a review were obtained as many as 40 PLTS on the roof of theparking building which were built from 2010 to 2022 with a total capacity of 207,49 MW. ThisPLTS parking facility was built in the form of PLTS on the roof of the parking building, carportand parking canopy. Institutions that have built PLTS above their parking facilities includeairports, banks, malls, governments, water companies, recycling companies, pharmaceuticalcompanies, financial companies, car companies, hospitals, schools, stadiums and universities.

ANALISIS PENGATURAN PUTARAN MOTOR INDUKSI 3 FASA DENGAN MENGATUR FREKUENSI MENGGUNAKAN VARIABLE SPEED DRIVE DI PT PDAM TIRTA MANGUTAMA KABUPATEN BADUNG I Putu Adhe Putra Novantara; I Wayan Arta Wijaya; I Made Suartika
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Along with the increase in technology and knowledge, this increase in the field ofelectric power systems makes the electric power system very developed. Electric motors havevery important benefits in industry. In the operation of the electric machine, it is declared goodwhen viewed from the performance of the motor. The purpose of this research is to find outwhat is the influence of the rotation of a 3-phase induction motor when setting the frequency onthe speed and torque of VSD, as well as the effect of frequency on the amount of torque. Themethod used in this study is to take the rotational speed data measured by VSD and thencompare it with the results of the analysis of the speed and torque calculations. The results ofthe study based on the frequency setting on the VSD Display at PT.PDAM Tirta MangutamaBelusung Area. The results of the VSD settings obtained frequency values of 30 Hz, 35 Hz, 40Hz and 45 Hz. Calculations using the equation of motor rotation speed to frequency, thetheoretical value is compared to 900rpm and from the results of calculations using VSD is nodifference, which is 900rpm. So from these data it can be seen that the data practically showsresults that are in accordance with the theory so that it can be concluded that the performanceof the induction motor is in good condition.

PENGARUH FILTER AKTIF DENGAN PENGATURAN DAYA REAKTIF TERHADAP EFISIENSI TRAFO BERBASIS SIMULINK IK Satriya Dhinata; AAG Maharta Pemayun; IB Gede Manuaba
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Harmonic distortion usually occurs due to the operation of excessive non-linearelectrical loads, this distortion can be reduced by utilizing an active harmonic filter which canusually be adjusted for reactive power on the filter. In this study, an analysis of reactive powersettings on the active filter was carried out to determine the efficiency value obtained byfollowing the IEEE 519 - 2014 THDi standard value of 8% for each phase. The results of theanalysis of the smallest reactive power setting but exceeding the transformer efficiency valuewhen the existing condition meets the IEEE 519 - 2014 standard is 40 % with the THDi value forthe R phase = 7, 54%, S = 7,74%, and T = 7, 37% obtained an efficiency value of 96, 31%.

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

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

RANCANG BANGUN ALAT MONITORING TANAMAN HIDROPONIK PAKCOY MEMANFAATKAN MIKROKONTROLER DAN TEKNIK COMPUTER VISION I Gusti Made Andi Dipayana; Duman Care Khrisne; Widyadi Setiawan
Jurnal SPEKTRUM Vol 9 No 1 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Technology in agriculture is growing, one of them is hydroponic techniques because it uses anInternet of Things (IoT) based system. One of the plants used in hydroponic techniques is thepakcoy vegetable plant. Pakcoy is one of the vegetables that has the widest distribution in Asia.In addition, the characteristics of pakcoy vegetables are almost the same as mustard greens.Pakcoy vegetables are also easy to cultivate because they only require a small amount of landand a short harvest period. This system is built using a microcontroller and computer visiontechniques as a control center and uses a Raspberry Pi 4 type B mini PC as a visual notificationand is equipped with a dc motor gearbox, L298N motor driver and webcam camera. Thissystem works automatically to control which plants are healthy and which plants are sick. Thisstudy aims to detect diseased plants and healthy plants on pakcoy plants with a hydroponicpakcoy plant monitoring tool that uses a microcontroller and computer vision techniques. Thistool works by taking pictures directly through a webcam camera, then processing them with atrained model. The output of this tool displays the probability value of pakcoy plants showinghealthy plants and sick plants. From the results of testing the validation data using 60 validationdata, based on the accuracy of the detection tool healthy and sick plants were able to correctlyidentify 38 validation data and 22 data were not recognized properly, so the accuracy of thevalue was 63%. and produces an f1-score of 0,87

PERKEMBANGAN PEMANFAATAN PLTS DI DKI JAKARTA MENUJU TARGET 13,8 MW TAHUN 2025 Simon Junior; I Nyoman Satya Kumara; Ida Ayu Dwi Giriantari
Jurnal SPEKTRUM Vol 9 No 1 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

PLTS is one of the solutions to produce electrical energy that can save electricity payment ratesand has a good impact on the surrounding environment. This study aims to analyze the development ofPLTS utilization in DKI Jakarta, types and total PLTS found in DKI Jakarta. This research was conductedby collecting data from journals, articles and news on the internet in the form of PLTS data in DKI Jakarta,type and capacity of PLTS, year of operation, location, ownership status and institutions that built PLTS.Then from the data, a review is carried out regarding the number, location, and total capacity of the PLTSbuilt every year, the results of this study are the number of PLTS in DKI Jakarta is 124 units with a totalcapacity of 11,088 kWp, with rooftop PLTS totaling 119 PLTS units. with a capacity of 10,29 MW andPLTS Ground-mount as many as 5 units with a PLTS capacity of 0,8 MW. The PLTS development in DKIJakarta has met the RUEN target of 73% to reach the 13.8 MW target in 2025.

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Nyoman Gunantara

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gunantara@unud.ac.id

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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

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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