Fidelity : Jurnal Teknik Elektro

Analysis of the Decrease in Insulation Resistance of Pin Type Porcelain Insulation at the ULP Ampera of PT PLN (Persero)

Dewi Tiara Priscillia, Lubis Zulkarnain (Author) — Wed, 31 Jan 2024 00:00:00 +0700

Isolators are one of the assets at PT PLN, which serve as separators between the energized and non-energized parts. Maintenance is performed by replacing damaged isolators when there are indications of reduced insulation resistance. In this journal, the insulation resistance values were measured using a Kyoritsu Insulation Tester and six porcelain isolator samples in various conditions were used. The aim was to determine the extent of the decrease in insulation resistance values, as well as the leakage current and touch voltage values based on Ohm's law formula. Based on the measurement results, the sixth isolator in partially damaged condition is the worst, supported by an insulation resistance value of 800 MΩ for a test voltage of 10kV and 400 MΩ for a test voltage of 5kV. In good condition, the measured insulation resistance value of the isolator is 1 TΩ. Based on the calculation results, in the sixth condition, the leakage current values were 6.25 mA and 25 mA, and the touch voltage values, assuming an average human insulation resistance value of 1000 Ω, were 6.25 Volts and 25 Volts. According to 0520-2.K.DIR.2014 standards, the insulation resistance values meet the requirement that 1kV insulation resistance can be sustained by 1MΩ and are still below the maximum touch voltage limit, which is < 50V effective.

Implementation of Induction Motor Speed Control Using a PID Controller

Abdul Muis Prasetia, Muhammad Nur Ramadani (Author) — Wed, 31 Jan 2024 00:00:00 +0700

The three-phase induction machine that is used has a constant speed in accordance with the factory capacity without being able to adjust the speed. The inverter is a motor speed control device by changing the frequency value that enters the motor. Setting the frequency value is intended to obtain the desired rotation speed or as needed. But the inverter itself needs to be added with a controller so that the control value of the motor can be adjusted according to the desired needs. PID controller is a controller that is most widely used in the field of control systems in the industrial world. Combining the three PID constants in parallel can cover every disadvantage and strength of each constant so that a good controller is obtained. Based on the results of the experiments that have been carried out, it can be concluded that the speed of the three-phase induction motor can work well. When tested by giving values of Kp = 02, Ki = 0 and Kd = 3.7, it was found that the motor speed response had a Time Constant = 1.5 seconds, Rise time = 2.2 seconds and Settling time = 2.7 seconds.

Study on the Design of a Micro Hydro Power Plant in Curug Muncar, Kaliwungu Village, Bruno District, Purworejo Regency, Central Java Province

Choirul Mufit, Setia Gunawan, Dimas Agung Wibowo (Author) — Wed, 31 Jan 2024 14:32:58 +0700

The activities and needs of humans in their daily life cannot be separated from the presence of electricity. Indonesia is a country that has many potential sources of renewable energy which until now have not been used optimally. Most of the renewable energy potential that has been utilized is in the form of rivers whose water tends to be wasted into the sea. Whereas every kilometer of the river can be used as a source of energy to drive power plants, micro hydro power plants (PLTMH) are an alternative to using renewable energy. Utilization of renewable energy can be optimized, especially in tourism locations, one of the tourism objects with the potential for PLTMH is Curug Muncar, Kaliwungu Village, Bruno District, Purworejo Regency. From the analysis results of the 15Kwp Micro Hydro Power Plant Design Study with a capacity in Muncar Waterfall, Kaliwunggu Village, Bruno District, Purworejo Regency, Central Java Province, it can be concluded as follows: The estimation results of 34.68 Kwh per day in Curug Muncar in the chapter that is in accordance with the needs of electrical energy. To simulate the design with the PLTMH application at Curug Muncar, Kaliwungu Village with digsilent. The water source for the MHP comes from the fountain river with a measured discharge at that time of 120 l/s

The Utilization of Sugarcane Bagasse as Turbine Drive Fuel in Steam Power Plant at PG. Kebon Agung

Wed, 31 Jan 2024 00:00:00 +0700

The use of energy by society is increasing and is not matched by the availability of raw materials. Fuel oil and coal are dwindling and even running out. Therefore, to overcome this problem the government issued Presidential Regulation No. 5 of 2006 concerning the National Energy Policy, where the utilization of biofuels is targeted at 2% in 2010 and 5% in 2025. To overcome this, methods are carried out by using renewable fuels and processing residual production materials such as the use of bagasse waste as fuel. Electrical energy sources from PLN and power plants in Indonesia are the main sources of electricity distribution used by consumers (industry). At PG. Kebon Agung has its own 4 steam power plants to meet the electrical energy needs needed to drive production machinery. Utilization of bagasse has the potential as a renewable fuel as a substitute for coal to gain resource and cost efficiency. In this study, the authors attach a cost comparison to the use of bagasse with other fuels, a comparison of the use of electrical energy from PLTU with PLN, and waste treatment to get efficiency and benefits in terms of costs and natural resources. With this research, it is hoped that readers can save resources and increase the efficiency of using biomass fuels.

Design and Simulation of a Cascade Boost DC-DC Converter as a Single-Phase Inverter Power Supply

Wed, 31 Jan 2024 00:00:00 +0700

Currently, the need for new renewable energy is getting higher, so the development of equipment in supporting this is increasingly rapid. designing an inverter that has a high output voltage can be done in several ways, namely by developing from the basic topology of the inverter or developing an inverter input side voltage boost DC-DC converter that has a high gain ratio capability or by using a step up transformer as an AC voltage booster, but it is inefficient considering that the step up transformer has a heavy weight, and reduces space. In this research the researchers designed a cascade boost converter as a single-phase inverter power supply. The cascade boost converter is used as a DC voltage increase where the DC high voltage is entered into a single phase inverter as a DC power supply and the inverter converts from DC-AC. Without using a step up transformer as an AC voltage booster. The inverter is combined with an LC filter as a wave filter to make it close to a sinusoidal wave. The simulation results show that the whole system is able to output a voltage of 220VAC RMS with a frequency of 50Hz.

Analysis Of Testing On Circuit Breaker Bay 7AB3 Gistet Adipala In The Framework Of Biennial Maintenance

BRILIANTI QORI AVRILA, Zaenal Abidin (Author) — Wed, 31 Jan 2024 12:13:27 +0700

Power Breaker (PMT) is a switch that is used to connect or disconnect electrical power in normal conditions or in abnormal conditions or disturbances. To always maintain the reliability of the PMT, regular maintenance needs to be carried out. This writing aims to identify the working principles of the PMT bay 7AB3, what tests are carried out on the PMT and identify the reliability and suitability of the Power Breaker (PMT). In this writing analysis, data from Power Breaker Maintenance (PMT) results during the 2 (two) yearly maintenance period for 2022 are used and compared with the minimum standards set. The results of the analysis state that in testing the grounding resistance for the R, S, T phases is 0.5Ω; 0.4Ω; 0.7Ω and the difference in simultaneous resistance time for open time condition 1 is 0.9 ms, open time condition 2 is 0.65 ms and closing time condition is 2.15 ms. In the contact resistance test, the value for phase R was 39.1 µΩ; S phase of 36.7 µΩ; phase T is 20.7 µΩ where this value is in accordance with the permitted standard, namely.

Analysis of Aquaponics Solar Panel Innovation in Building C of Pembangunan Panca Budi University

Andreansyah, Muhammad Erpandi Dalimunthe, Dicky Lesmana (Author) — Wed, 31 Jan 2024 00:00:00 +0700

Continued population growth and increasing food needs require more innovation in the agricultural sector to increase crop productivity sustainably. An interesting approach to this challenge is solar panel-based aquaponics systems. Solar panels are integrated as an energy source to drive water pumps, and other system components in aquaponics. Research was conducted on the production of electricity generated by solar panels in aquaponics in Building C of Pembangunan Panca Budi University. Data analysis was carried out to evaluate and provide innovations regarding the efficiency and reliability of solar panels in the environmental conditions of Pembangunan Panca Budi University.

Performance Comparison Between Differential Evolution and Bat Algorithm in P.I.D Tuning for Optimization of Speed Control on Parallel Hybrid Electric Vehicle

Eddy Lybrech Talakua, Erwin Dhaniswara, Simson Simson (Author) — Wed, 31 Jan 2024 00:00:00 +0700

In the last decade, there have been many means of transportation that use fuel oil (Internal Combustion Engine (ICE)). This has a serious impact on the environment due to the resulting pollutant gas emissions. One solution is the use of hybrid electric vehicles (HEV) as a replacement for vehicles that use ICE. One of the performances that a HEV must have is to have a stable speed when driving. In this research, several methods used in the metaheuristic algorithm in the disturbance observer have the advantage of describing the inverse model of the plant without creating a mathematical model. Testing was carried out by comparing two methods of metaheuristic algorithms, namely Differential Evolution and Bat Algirthm. The simulation results show that the method used on this HEV is to maintain its speed, so according to the test results it shows that the Differential Evolution method is the best method for controlling speed on a Parallel Hybrid Electic Vehicle.

Analysis of Air Circuit Breaker (ACB) MVS20N as a Protection System for AC Combiner Panels at PT. Tiga Kreasi Indonesia

Apriliano Chandra Diva Chandra, Didik Aribowo (Author) — Wed, 31 Jan 2024 00:00:00 +0700

The study explores the functionality and performance of Air Circuit Breaker (ACB) as a protective mechanism employing air arc extinguishing medium. ACBs find utility in both low and medium voltage panels, utilizing atmospheric pressure air to extinguish arcs generated during switching events or disturbances. This research undertakes a comprehensive analysis of ACB components, wiring configurations, and the calibration of threshold values, including the electric tripping unit system. Employing a methodology involving observation, interviews, and literature review, the study determines critical parameters such as the incoming current value (2000 A), Ir (0.4), Lsd (2), and Tr (0.5). The established threshold limit for ACB activation is set at 800 A, with the Lsd/current reaching 1,600 A upon ACB activation, triggering automatic tripping if the current surpasses 1,600 A. The study also identifies the activation time (0.5 seconds) for ACB tripping upon receiving currents exceeding 1,600 A. Analysis reveals pre-alarm deactivation at 85% current level, while activation occurs at 90%, indicating impending electrical tripping. For instance, Ir of 800 A signifies overload threshold, leading to automatic ACB deactivation and circuit shutdown upon current surpassing 800 A. Similarly, exceeding the short circuit threshold of 1,600 A triggers automatic ACB activation, ensuring circuit safety. This research sheds light on critical aspects of ACB functionality and performance, offering insights into its efficient operation and protective capabilities in electrical systems.

IR Sensor Optimization on Microcontroller-Based Coin Sorting and Counting Machine

Lukmanul Khakim (Author) — Wed, 31 Jan 2024 00:00:00 +0700

The advancement of technology has greatly influenced every human task, where tasks that were once very time-consuming or laborious can now be easily and quickly accomplished thanks to technology. Take, for example, the activity of counting and sorting coins or tokens. If this activity were done in a traditional manner, which involves counting and separating each denomination, it would be very cumbersome and time-consuming. However, if the process of counting and sorting coins or tokens is done using technology, it can be easily and quickly completed. This research is conducted to analyze the performance optimization results on the IR sensor part of a coin sorting and counting machine that has been made based on a microcontroller. After several tests, it can be concluded that the machine can sort and count coins with denominations of 100, 200, 500, and 1000 rupiah. From 50 coins with four denominations, it can be inferred that the machine experienced an increase in accuracy in sorting coins from 98.6% to 99.6%. This increase in accuracy was achieved by optimizing the IR sensor, thus making the IR sensor readings more optimal.