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Leonardus Sandy Ade Putra
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Jl. Prof. Dr. Hadari Nawawi, Pontianak 78124, Indonesia
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INDONESIA
Telecommunications, Computers, and Electricals Engineering Journal
Published by Universitas Tanjungpura
ISSN : -     EISSN : 30260744     DOI : https://dx.doi.org/10.26418/telectrical.v1i2
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Signal Processing; Communication Networks; Artificial Intelligence, Computer Technology; Power Systems; Image Processing
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 8 Documents
 1 
Search results for , issue "Vol 2, No 2: October 2024" : 8 Documents clear
DATA COMMUNICATION MODEL WITH TECHNOLOGY LORA MULTI-HOP: FIRE INFORMATION CASE STUDY MULTI-STOREY BUILDING Fitri, Fitri; Marpaung, Jannus; Tjahjamooniarsih, Neilcy
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.84928

Abstract

LoRa is a long-range communication technology with the advantage of wide coverage but faces challenges in single-hop communication. This issue arises because the communication occurs in Non-Line of Sight (NLOS) conditions. The method used to address this is by testing a multi-hop LoRa communication system, where relays act as intermediaries between the transmitter and the gateway. The results from this study show that communication between the transmitter and relay 1 maintains a consistent RSSI of -94 dBm with an SNR ranging from 8.25 dB to 10 dB. Communication between relay 1 and relay 2 has an RSSI ranging from -83 dBm to -86 dBm and an SNR between 7.50 dB and 9.50 dB. For communication between relay 2 and relay 3, RSSI ranges from -105 dBm to -116 dBm with an SNR between 3 dB and -8 dB. Communication between relay 3 and the gateway shows an RSSI between -94 dBm and -97 dBm with an SNR between 2.00 dB and 2.50 dB. The multi-hop LoRa system successfully detected and transmitted fire data in real-time, including smoke concentrations rising to 85 ppm, with smoke and fire indicators both showing a value of 1, indicating the presence of a fire, as well as changes in temperature and humidity. The system consistently detected and transmitted fire data accurately under various conditions, with sensor data from the transmitter reaching the gateway without loss or damage.
STUDY OF SIEMENS 7UT86 PERCENTAGE DIFFERENTIAL RELAY AS PROTECTION OF 60 MVA POWER TRANSFORMER AT 150 GIS KV DAYEUH KOLOT Purba, Dian Andreas; Gani, Usman A; Danial, Danial
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.84598

Abstract

Power transformer is a vital equipment in the electric power system that plays an important role in distributing electrical energy from the generator to the load center. Transformers require a protection system that is able to detect an internal or external disturbance with a very fast time to prevent widespread blackouts. Transformer protection generally uses differential relays that require settings in determining their working parameters. On this basis, the authors conducted a study of the Siemens 7UT86 percentage differential relay as a 60 MVA power transformer protection at the 150 kV Dayeuh Kolot GIS, by taking data to perform mathematical calculations to obtain working parameters and testing. The results of mathematical calculations obtained the rating current value used to select the ratio of installed CT to differential current. The relay is set using slope 1 of 30% and slope 2 of 80% and a differential current of 0.3 I/IrObj to prevent unnecessary blackouts due to the appearance of differential currents by magnetizing currents, inrush, tap changers, CT saturation and as a safety factor. Tests using Omicron test equipment obtained results in the form of actual differential current values of both slope areas, angular stability, current and angular ramping and relay operation delay times. Testing the working parameters of the relay obtained the result that the relay works by commanding the circuit breaker to trip when it exceeds the pick up value. During internal faults and at faults below the pick up value and during external faults the relay standsby.
Design of Auto Cut Off Charging System for Electric Car Battery of Untan Electrical Car Team Based on ESP-32 Microcontroller Hasan, Muhammad
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.87139

Abstract

Battery charging is the process of charging a battery from low to full capacity. In this study, the battery used is an 18650 48V 21Ah lithium-ion battery that is charged using an 18650-lithium charger that has an auto cut off feature when the battery is full. This feature is important to prevent overcharging and overcurrent, which can damage the battery. However, this charger is not equipped with a temperature sensor and cannot display voltage and current values. Monitoring the temperature, voltage, and current is very important, especially since battery temperatures exceeding 60 °C can cause damage and risk fire. Charging the battery to 80-90% of full capacity can also extend battery life by reducing chemical degradation. The system developed in this research includes an auto cut off feature that is activated based on temperature, a voltage regulated between 47.1V to 53.5V, and control via IoT Blynk. The system uses ESP-32 as the microcontroller, MAX6675 thermocouple temperature sensor, PZEM-017 sensor for DC voltage and current, and 16x2 LCD keypad shield to set the set point and display the sensor results. The results show that auto cut off works well, with voltage sensor accuracy reaching 99.85% and PZEM-017 sensor accuracy of 97.68%.
PROGRAM MODIFICATION ON THE NODEMCU USING THE OVER THE AIR METHOD THE CASE OF AIR MONITORING EQUIPMENT Andriany, Oktaviani Laurensia; Marpaung, Jannus; Tjahjamooniarsih, Neilcy
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.84927

Abstract

Internet of Things (IoT) is a technology that allows devices to connect to other devices via the Internet network. Over The Air (OTA) is a wireless delivery mechanism for transmitting data and performing updates. Modify the NodeMCU by updating it so that the sensor condition is active by uploading files containing programs wirelessly successfully carried out by the method Over The Air. Mark Packet loss 0% at the time upload file from laptop to NodeMCU when activating 1 DHT22 sensor and 2 DHT22 sensors and MQ7 can only reach a distance of 40 m in use Wi-Fi with a working frequency of 2.4 GHz. The difference in value Delay between updating just 1 sensor, namely DHT22, and 2 sensors, namely DHT22 and MQ7, at a distance of 5 m it is 0.1 ms, at a distance of 10 m it is 0.4 ms, at a distance of 20 m and 30 m it is 0.5 ms, and at a distance 40 m is 0.7 ms. Meanwhile, at a distance of 50 m - 100 m, updates using the over-the-air method can no longer be updated because the ESP8266 NodeMCU can no longer connect to the network Wi-Fi with a frequency of 2.4 GHz.
IMPLEMENTATION OF A REAL-TIME MONITORING SYSTEM FOR HIGH ECONOMIC ORNAMENTAL PLANTS USING THE ODO GREK APPLICATION Odo, Klaodius
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.85749

Abstract

The increasingly rapid development of science and technology also has an impact on the development of technology used by society in carrying out its daily activities. Internet technology encourages the development of information technology applications, both website-based and Android-based. Developing Android-based applications is also made easier with the presence of APP Inventor. APP Inventor was developed by MIT (Massachusetts Institute of Technology) in 2011. This is an application for developing website-based Android applications that can be accessed online. The system developed allows real-time monitoring of ornamental plants via an Android application. Data such as soil moisture and temperature can be accessed anytime and anywhere, making it easier for plant owners to take the necessary actions. Users of sensors connected to the ESP32 and integrated with Firebase are proven to provide accurate and reliable data. Tests show that this system is capable of sending and receiving data quickly and accurately, so that users always have the latest information about the condition of their plants. The implementation of this system uses components that are relatively affordable and easy to obtain. The Android application developed is also designed with a user-friendly interface, so that it can be used by various groups without requiring in-depth technical knowledge.
STUDY OF THE EFFECTS OF INCLINATION ANGLE OF ARCHIMEDES TURBINE CHARACTERS - GENERATOR STUDY Dede, Markurius Hariyadi; Danial, Danial; Taufiqurrahman, Muhammad
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.76137

Abstract

The current demand for electrical energy stands as a crucial aspect in both household and industrial contexts. Indonesia, blessed with abundant water resources, holds significant potential in the development of renewable energy. Specifically, West Kalimantan boasts plentiful rivers that serve as potential sources for electricity generation. The Archimedes Turbine has emerged as a primary focus for generating electricity from water flow. This research aims to analyze the evolution of the Archimedes turbine concerning its characteristics with angle variations and their influence on the generator. Through a literature review, this study explores the development of Archimedes turbines over time.In this analysis, the variation in the turbine's angle of inclination concerning the generator takes center stage. The research findings indicate that the performance characteristics of the Archimedes turbine, such as efficiency, generated power, and torque, are evaluated under various angle conditions. This research is expected to provide profound insights into the contribution of Archimedes turbine technology in the future and expand the understanding of its potential application in different water contexts.The research findings reveal that the optimal turbine performance concerning water flow occurs at a 30Ëš angle with a flow rate of 100% (Q3 = 0.006 m^3/s). Under unloaded conditions, the turbine produces a voltage of 19.13 V, while under loaded conditions, the resulting voltage is 17.21 V.
TRANSFORMER RELIABILITY ANALYSIS USING THE WEIBULL DISTRIBUTION METHOD (CASE STUDY OF THE POWER TRANSFORMER AT THE KOTA BARU PONTIANAK SUBSTATION) Chaniago, Muhammad Ilham; Purwoharjono, Purwoharjono; Gianto, Rudy
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.83889

Abstract

Reliability is the probability that a component or system will be able to operate according to the desired function for a certain period of time when used under specified operating conditions. To determine reliability in operational terms, a more specific definition is needed, namely a description of the failure that is not confusing and can be observed, identification of the time unit, and the system being observed must be in normal environmental and operating conditions. Transformer reliability is greatly influenced by two things, namely disruption and maintenance of the transformer. Scheduled and regular maintenance can increase transformer reliability, however incomplete and poorly scheduled maintenance will result in the transformer not operating or serving more often. The Weibull distribution is a distribution that has an important role, especially in matters of reliability and maintainability analysis. The Weibull distribution is often used as an approach to determine the characteristics of the damage function because changes in value will result in the Weibull distribution having certain properties or being equivalent to a certain distribution. This distribution is a versatile distribution that can take on the characteristics of other types of distribution, based on the values of the form parameters. The Weibull distribution has several reliability indices such as failure rate and MTTF (Mean Time To Failure). Based on the calculation results, power transformer 1 has an average failure rate of 0.0015 times/day, and an MTTF of 714.0685 days or 1.9564 years. Meanwhile, power transformer 3 has a failure rate of 0.0009 times/day, and an MTTF of 1587.6033 days or 4.3496 years. It can be said that power transformer 3 has much better failure rate and MTTF values than power transformer 1. The results shows that power transformer 3 shows better overall performance with a lower failure rate and higher MTTF.
IOT INTEGRATION IN WEB-BASED LECTURER ATTENDANCE SYSTEM TO IMPROVE ACADEMIC COMMUNICATION Saputra, Surya Darma Hadi; Putra, Leonardus Sandy Ade; Yacoub, Redi Ratiandi
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 2: October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i2.84511

Abstract

Effective relationships between students and lecturers are essential in supporting the Tri Dharma of Higher Education, but difficulties in communication and meetings can hinder this process. Internet of Things (IoT) technology offers a solution by enabling real-time management of lecturer attendance information. This research aims to: (1) design a website-based lecturer attendance information system, (2) test the system design on the device and information system, and (3) analyze the performance of the integrated system. The methodology used is the RD (Research and Development) method, which involves needs analysis, design, development, and system testing. The test results show that the designed system is able to provide information related to lecturer attendance well. Of the 10 samples, 7 were successfully enrolled in the database, and 6 successfully performed fingerprint matching. Data management is done well, although there are challenges such as the need for a stable network. The design of the device involved complex procedures, including WiFi configuration and fingerprint matching using a MySQL database, showing the potential for further development. This web-based IoT system can be accessed through various gadgets such as smartphones, laptops, or computers, making it easier for users to access information. Overall, this system provides a practical and efficient solution to improve communication and meetings between lecturers and students.

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