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All Journal Prosiding Semnastek Jurnal Informatika dan Teknik Elektro Terapan Jurnal Ampere JURNAL KAJIAN TEKNIK ELEKTRO Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia ELECTRA : Electrical Engineering Articles Transformatif: Jurnal Pengabdian Masyarakat Electrician : Jurnal Rekayasa dan Teknologi Elektro Teknokris Jurnal Elektro Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Wiharja, Ujang
Universitas Krisnadwipayana
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Physics Social Sciences

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Studi Pendekatan Formula Jogja Pada Jaringan Distribusi PT PLN UP3 Pondok Gede Basri, Hasan; Wiharja, Ujang
ELECTRA : Electrical Engineering Articles Vol. 3 No. 1 (2022)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/electra.v3i01.12505

Abstract

PT. PLN (Persero) at the Customer Service Implementing Unit (Unit Pelaksana Pelayanan Pelanggan, UP3) Pondok Gede, in order to make the loss reduction program more effective, first find out whether the biggest contribution to shrinkage in Pondok Gede UP3 is technical or non-technical. By using the shrink formula method, Jogja has several mechanisms to perform the analysis. The results of the Jogja Formula Shrinkage are presented in the Dupont Chart which divides losses into two parts, namely non-technical losses and technical losses, while technical losses are divided into four parts, namely medium voltage network losses, distribution substation losses, low voltage network losses, and house connection losses. So that we can evaluate and analyze these losses and the program's efforts to reduce losses are on target. In the calculation of the cumulative loss of UP3 Pondok Gede globally in the first quarter of 2020, it is 58,403,338 kWh or 12.27%. After performing a calculation simulation using the Jogja Formula, it was obtained with a technical loss composition of a total of 34,813,582 kWh or 7.31% (this technical loss cannot be avoided or eliminated because it is a shrinkage caused by the components of the equipment used), and non-technical losses. engineering of 23,589,757 kWh or 4.95%.
Effect of Salt Solution in Electrochemical Stabilization with Variation of Potential Difference on Clay's Shear Strength Darmiyanti, Lydia; Wiharja, Ujang
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 1 (2024): EDISI MARET 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i1.5434

Abstract

Clay is one of the problematic soils in Indonesia, with a distribution in Java of close to 20% of surface pedology. The biggest problem with clay soil is its ability to swell when it absorbs water and shrink when the water content decreases. Indonesia's tropical climate, where only the rainy and dry seasons, significantly affects clay's swelling potential, hindering the soil's mechanical properties. The significant expansion potential causes the soil to have a slight shear angle, which affects its bearing capacity. This condition underlies the urgency of clay soil improvement to increase the shear strength of the soil. Electrochemical stabilization is one of the effective methods for soils with low permeability. This study aimed to determine the most optimum voltage in electrochemical stabilization using a salt solution. The electrochemical process is used in soil stabilization. This method is used to improve soils with low permeability and high plasticity index (18%), which results in increased bearing capacity and decreased soil development. This study was conducted with four different stress scenarios, and from the results of testing the mechanical properties of the soil, it was found that the greatest shear strength occurred at a stress of 12V. Stabilization of clay soil by electrochemistry can be inferred from the research to increase the value of soil shear strength and affect the increase in soil bearing capacity.
Studi Perbandingan selenoid kapiler dan selenoid ekspansi pada Mesin Es serta di kontrol Aplikasi Blynk Mustofa, Adi; ujang wiharja
Jurnal Ampere Vol. 8 No. 2 (2023): JURNAL AMPERE
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/ampere.v8i2.11437

Abstract

Currently, the use of this ice machine still uses a solenoid connected to a capillary and the results cannotbe targeted. The use of an ice machine with the ESP8266 module is combined with the blynk applicationwhich is a combination with the Internet of Thinks (IoT) system which makes the performance of using theice machine can be run remotely or with a smartphone. Reduced costs and less operator effort to expendfor ice making. The ice machine was finally integrated with the ESP8266 Module, the blynk applicationand added with one solenoid connected to an expansion which functions as a substitute for the capillaryselenoid if the need for ice is needed quickly in the process and will return to the capillary selenoid duringnormal production. The results showed that the ice machine with capillary selenoid was slower in the iceproduction process with 1 hour of production time of 5 kg of ice and required electricity consumptionduring production of 0.814 KWH, while the ice machine after using selenoid expansion the machineproduction process was faster than the capillary selenoid system by producing ice production for 1 hourwith a yield of 8 kg of ice and requires electricity consumption during production of 0.855 KWH, withpressure for expansion of 18 bar.
Analisa Perbandingan Konduktor ACSR Hawk dan ACCC Amsterdam pada Rekonduktoring SUTET 500 kV di Suralaya-Cilegon Ujang Wiharja; Muhammad Faqih
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 5 (2025): September : Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i5.1093

Abstract

Transmission line reconductoring is one of the strategic solutions to increase the capacity and efficiency of the power system without the need to build new infrastructure. This study aims to analyze and compare the performance of two types of conductors, namely ACSR Hawk and ACCC Amsterdam, used in the Suralaya-Cilegon 500 kV SUTET transmission line. The comparison is carried out by considering technical aspects including power losses, ampacity, horizontal and vertical sag values, and overall energy efficiency. The research methodology involved a literature study, collection of conductor technical data, calculation of resistance, current, and power losses, and simulation of sag values against temperature variations. In addition, economic analysis and field implementation aspects were also considered to assess the feasibility of using each conductor. The results show that Amsterdam's ACCC conductor has superior technical performance compared to Hawk's ACSR. ACCC is capable of delivering currents up to ±1300 A, compared to ACSR Hawk which is only ±800 A. The power loss value using ACCC is recorded at ±1.34 MW, lower than ACSR Hawk at ±1.79 MW. In addition, ACCC exhibits smaller sag values due to its lighter weight and higher tensile stress, making it more stable against temperature fluctuations. In terms of energy efficiency, the use of ACCC can save energy up to ±3942 MWh per year. By considering the technical advantages and long-term energy efficiency, this study recommends the use of Amsterdam ACCC as a reconductoring solution for high-voltage transmission lines, especially in systems that have high loads and require maximum reliability and efficiency.
HARMONIC DISTORTION AS A REFERENCE FOR THE QUALITY OF THE ELECTRICAL DISTRIBUTION SYSTEM IN THE PT. GOJEK TOKOPEDIA LOGISTICS Wiharja, Ujang; Slamet Purwo Santosa; Lukman Aditya
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 3S1 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i3S1.7924

Abstract

However, little research has been done on how harmonic distortion affects the electrical quality of buildings. This harmonic distortion is caused by nonlinear loads, which will mainly affect electronic equipment. At the building's main distribution panel point (MDP), To obtain information, total harmonic distortion in voltage (THD-v) and total harmonic distortion in current (THD-i) were measured directly. Regular Maintenance and checks will obtain data that can be evaluated so that the system is always reliable. In the case of the PT Gojek Tokopedia Indonesia building, the measurement results on 20-05-2023 showed that the number of THDi in phase R at MDP is 64.56%. According to the IEEE std 519-1992 standard, the permissible electric current is 15%, so in the solution with Harmonic Filter (H.F.), the change in electric current in phase R becomes 12.37%. Using a harmonic filter in the inductor (L) value of 0.28 mH and capacitor (C) value of 2 mF, The power factor increases to 0.99 from 0.85. Because of this, every building manager and Maintenance must pay regular attention to the THD value according to applicable standards.
Analisa Kinerja Kapasitor Bank Pada Apartemen Gandaria Heights Jakarta Alif Anshar; Ujang Wiharja
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 17 No. 3 (2023)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v17n3.2461

Abstract

The occurrence of a voltage drop in the electrical panel load in the common area of ??the Gandaria Heights apartment monitored by the Building Automation System (BAS) is caused by an erratic change in power factor (cosphi). Because according to data taken from recording through the daily logsheet, a power factor of 0.75 is obtained. Eliminating power losses in 3 phase electrical installations with a total power of 300 KVA is to improve the Power Factor against voltage drop disturbances. By adding a capacitor to the common area electrical panel which is indicated to have the lowest power factor. Based on calculations using field data, the total KVAR before and after repairs is 124 KVAR. If the existing capacitor has a value of 50 KVAR, then 3 step capacitors can be installed with a total of 150 KVAR. Thus leaving a reactive power of 26 KVAR or equivalent to 17.3% of the total power of 150 KVAR
Sistem Otomatisasi Mesin Filling Alers Sebagai Paste Filling Machine Menggunakan PLC Omron wiharja, Ujang; Himawan, Ilham
JURNAL ELEKTRO Vol 13 No 2 (2025): JURNAL ELEKTRO
Publisher : Teknik Elektro Universtias Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/jetro.v13i2.645

Abstract

Pharmacy is a basic human need that has evolved alongside human civilization. With the advancement of technology and information, pharmacy has developed into a promising profession. Initially, it was just a service aimed at protecting people from suffering. The pharmaceutical industry is a business entity that has been authorized by the Minister of Health to engage in the manufacturing of drugs or medicinal substances. The production of high-quality drugs or medicinal substances requires machinery with advanced technology to ensure performance. This certainly helps save time, human labor, and costs during the production process. In this final project research, an automation system has been developed for the Filling Alers machine, specifically the Paste Filling Machine Type 1624. The Filling Alers PFM Type 1624 machine currently requires manual assistance or an operator during the filling process of products into containers. An automated system will be created for this process using an Omron CP1E PLC. With this automation system, the filling process will run automatically without needing human or operator intervention. The results of the product filling will adhere to the established weight standards during production. The product's weight will remain stable between 455 gr and 461 gr, ensuring that the product weight does not fall below 455 gr or exceed 461 gr. This eliminates the need for additional work by the operator to adjust the product amount when the weight is either below 455 gr or above 461 gr.
Rancang Bangun Simulasi Parkir Mobil Berbasis Mikrokontroler ESP 8266 dan Monitoring Menggunakan Blynk Agung Supriyadi; Lukman Aditya; Ujang Wiharja
JURNAL ELEKTRO Vol 13 No 2 (2025): JURNAL ELEKTRO
Publisher : Teknik Elektro Universtias Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/jetro.v13i2.667

Abstract

The aim of this research is to design and simulate an automatic car parking system based on the ESP 8266 microcontroller in order to improve the efficiency of parking slot monitoring. Conventional parking systems are generally operated manually, which often results in time inefficiency and difficulty in determining available capacities. The proposed design applies an Internet of Things (IoT) approach by integrating several components into a prototype simulation. The ESP 8266 microcontroller serves as the main controller, connected to infrared sensors that detect vehicle presence. A servo motor operates as the parking barrier, while an ESP 32-CAM module enables visual monitoring of the parking area. In addition, a 20x4 LCD displays the number of available slots, vehicle entry and exit status, and real-time date and time. Sensor data are also transmitted to the Blynk application for real-time monitoring and control via smartphones. Simulation testing was conducted to evaluate system functionality. The infrared sensors, with a 10 cm detection range, achieved an average response time of 1.24 seconds for barrier operation. The servo motor successfully opened at a 90-degree angle with 2 watts of power consumption and a movement speed of 1.02 seconds. The LCD displayed accurate slot availability and real-time updates, while the Blynk application provided reliable monitoring and system indicators. The ESP 32-CAM ensured continuous visual observation of the parking area, and a buzzer alarm was triggered when vehicles attempted to enter during full-capacity conditions. In conclusion, the design and simulation of the system demonstrate its potential to enhance parking management by reducing manual supervision, enabling real-time monitoring, and increasing convenience for both drivers and parking operators.
Co-Authors Abdul Kodir Abdul Kodir Albahar Abdul Malik Aditya, Lukman Agung Supriyadi Ahmad Rifaldi Al Bahar, Abdul Kodir Alif Anshar Alif Anshar BagriatnaAllan Pintadi Danu Permana Aji Darmiyanti, Lydia Doddi Supri Hartono Hakim, Teten Dian Hasan Basri Herwin Eduard Silaban Himawan, Ilham Kusumo, Bayu Lukman Aditya Muhamad Kurniyawan Muhamad Kurniyawan Muhammad Faqih Mustofa, Adi Naibaho, Nurhabibah Nurbayan Prasetyo, Ade Agus Priyono, Tri Ongko Riskusnanto Sapto Agung Nugroho Septo Wisnu Groho Slamet Purwo Santosa Sri Hartanto Suratmin Wasono Doso Putro