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Journal of Electrical, Electronics and Informatics
Published by Universitas Udayana
ISSN : 25498304     EISSN : 26220393     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering
Journal of Electrical, Electronics and Informatics is a peer-reviewed journal which devoted to the advancement and dissemination of scientific knowledge concerning electrical, electronics and informatics throughout the world for researchers and professionals. The journal is an official publication of the Institute for Research and Community Services Udayana University. The scope of these areas may encompass: (1) theory, methodology, practice, and applications; (2) analysis, design, development and evaluation; and (3) scientific and technical support to establishment of technical standards in the field of electrical, electronics and informatics.
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Articles 7 Documents
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Search results for , issue "Vol 2 No 2 (2018): JEEI (August 2018)" : 7 Documents clear
Front Cover and TOC Ni Made Ary Esta Dewi Wirastuti
Journal of Electrical, Electronics and Informatics Vol 2 No 2 (2018): JEEI (August 2018)
Publisher : Institute for Research and Community Services Udayana University

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Abstract

This page is Cover and Table of Content
Remote Sensing Systems At The Rocket's Payload Test C.G.I. Partha; I.N. Budiastra; A.A.N. Amrita; I.M. Suartika
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.p05

Abstract

Aviation technology and space is one of the leading technology for developed countries, especially in the form of rocket technology and payload. Countries that are capable of mastering these technologies will be respected by countries all over the world. Indonesia as the island nation and the State's large and extensive maritime already should have independence in the mastery of the technology of the rocket and payload. Therefore, continuous efforts are required to achieve independence, including through enhancing aviation technology and space technology, particularly at early stages the rocket and payload. Remote Sensing Systems At the rocket's Payload was Test remote monitoring system image capture and the attitude of the launch payload through the computer screen (display) continuously (real-time) data obtained from sensors that are mounted on the rocket's payload. 3D point (x, y, z) must be expressed as a graph visualization perspective drawings of rockets with the appropriate direction. The radar conducted computer GS (Ground Segment) or Ground Control Station (GCS). The result of the attitude of the Rocket Test launch Payloads have been able to do the communication data transmission of images and data for 3D (x, y, and z) in real-time to the Ground segment. Wireless communication uses radio telemetry frequency 433 MHz, power of 100 mW, the distance range obtained in this study a maximum of 1000 meter in conditions in the air and without obstruction.
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%.
Performance Assessment of OFDM System using Reed-Solomon Codes over Fading Channels N.M.A.E.D. Wirastuti; I.M.A. Suyadnya; D.C. Khrisne
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.p06

Abstract

This paper study the performance of Orthogonal Frequency Division Multiplexing (OFDM) system over AWGN and Rayleigh fading channels. OFDM performs multi-carrier transmission where all the subcarriers are orthogonal to each other. The channel coding was applied to improve the OFDM system performance. Reed Solomon (RS) codes was chosen that an efficient channel coding algorithm and has intense error correction ability. Adding the benefits of multicarrier OFDM system and Reed Solomon codes to achieve the expected system performance. The coded OFDM system was modeled over and simulated using Matlab. The bit error rate (BER) and energy bit (Eb) per noise power density (No) was performed during system simulations. QPSK modulation was used to modulate the random bits. From the simulation results It can be seen that BER vs. EB/No parameter for Coded OFDM system lower than uncoded OFDM. This was because RS codes succeed to correcting the error generated along data transmission.
Damping Harmonic Distortion Using Active Filter with PID Control at Udayana University Faculty of Engineering Bukit Jimbaran I Made Suartika; Rukmi Sari Hartati; 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.p02

Abstract

Increased THD (Total Harmonics Distortion) in the utility, caused by the increasing operation of non-linear loads. High THD current (THDi) will affect the increase of power losses in the power system. In this study, THD analysis of the simulation results was performed according to IEEE 519-2014 standard on existing condition, shunt active filter operating condition and shunt active filter operating conditions with PID (proportional integral derivative) control, also analyzed losses before and after harmonic impact. The result of losses analysis on existing condition: losses phases R 3.38%, phase S 2.29%, phase T 3.33%. Total losses on existing condition 9.01%. Operation with active shunt filter is obtained losses for phase R 1.60%, phase S 2.46%, phase T 1.67%, so the total losses become 5.73%. While using the active filter with PID control for losses phase R 1.02%, phases S 0.89%, phases T 0.99%, so the total losses fell to 2.18%
Tourism Event Management System Using Gianyar Smart Tourism Based On Cloud I Putu Agus Eka Pratama; Kadek Ayu Wirdiani
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.p03

Abstract

Tourism event data data in Gianyar regency must be managed well, so that it can giving knowledge to all event organizers about tourist interest of all tourism objects around Gianyar Regency. The knowledge also helping them for strategy determination and decision making. Each event organizer can manage their own tourism event data into the system and all of data can be processed to be information and report for the tourist, to make tourism service in Gianyar Regency better. This paper show the design, implementation, and testing of Tourism Event Management System using Gianyar Smart Tourism based on Cloud for all event organizers in Gianyar Regency, developed using Design Science Research Methodology (DSRM) and tested using User Accepted Testing (UAT). It also act as Knowledge Management about tourism event data and tourist demand. Conclusion, all tourism event can be managed well and all event organizers can manage their tourism event data easier.
Analysis of the Increase of Transformer Power Losses due to the Operation of Unbalanced Nonlinier Loads I Wayan Rinas; I Made Suartika; Anak Agung Maharta Pemayun
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.p04

Abstract

Non-linear loads are the source of harmonic current for electric utilities. The high level of harmonics greatly affects the increase of losses of electrical power (losses). The quality of electric power is determined by the parameters of power losses that occur in the transformer due to harmonic distortion. In this research will be analyzed THD from result of measurement and simulation in accordance with IEEE 519-2014 standard, power loss analysis on transformer before and after. Harmonics, the impact is increased due to unbalanced linear currents.

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