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All Journal Jurnal Informatika dan Teknik Elektro Terapan PROtek : Jurnal Ilmiah Teknik Elektro Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Indonesian Journal of Advanced Research (IJAR)
Taryo, Taryo
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Aerospace Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media

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Speed Control Analysis of Frequency Changes in Three Phase Synchronous Motor With Variable Speed Drive (VSD) Lasmana, Lasmana; Musyaffa, Muhammad Aziz; Taryo, Taryo
Aviation Electronics, Information Technology, Telecommunications, Electricals, and Controls (AVITEC) Vol 7, No 3 (2025): November (Special Issue)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v7i3.3153

Abstract

This study investigates the impact of frequency adjustment using a Variable Speed Drive (VSD) on the performance of a three-phase AC synchronous motor under both no-load and load conditions. Energy inefficiency in industrial systems often results from mismatches between motor speed and load demands. The motor was tested at frequencies ranging from 20 Hz to 50 Hz to evaluate changes in speed, input power, torque, and efficiency. Unlike previous studies that focused solely on motor speed, this research provides a more comprehensive performance analysis. The results show that increasing frequency leads to higher motor speed and power consumption, but a decrease in torque. Under no-load conditions, speed increased from 607 RPM at 20 Hz to 1506 RPM at 50 Hz, while torque dropped from 1.57 Nm to 0.63 Nm. Under load, speed increased from 88 RPM to 683 RPM, and torque declined from 10.9 Nm to 1.39 Nm. Although motor efficiency decreases at higher frequencies due to increased magnetizing current caused by the constant V/f ratio, it must be emphasized that VSDs can significantly enhance energy efficiency by allowing the motor to operate at an optimal speed according to the load, instead of continuously running at full speed. Therefore, dynamic frequency control based on load variation is essential to optimize motor performance. VSDs thus play a vital role in intelligent control strategies aimed at improving energy efficiency in industrial applications.
Analysis of Energy Losses in Medium Voltage Distribution Conductors Based on Load Curve: A Case Study on the Sindanglaut Feeder Marriwanto, Pirdo; Tobaristan, Haris; Taryo, Taryo
Indonesian Journal of Advanced Research Vol. 4 No. 8 (2025): August 2025
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v4i8.15162

Abstract

Power losses in electrical distribution systems are a major challenge that can reduce the efficiency of energy delivery. This study focuses on reducing such losses in medium-voltage distribution networks, particularly on the Sindanglaut Feeder at the Ciledug customer service unit of the State Electricity Company. The analysis employed load flow simulations using ETAP 12.6.0 software, with an optimization strategy of increasing the cable cross-section from 150 mm² to 240 mm² to assess its impact on voltage drop and distribution efficiency. Simulation results indicated that, prior to optimization, the average active power was 1.40 kW, reactive power was 5.75 kVar, and voltage drop was 3.28%. After optimization, these values decreased to 1.13 kW, 5.16 kVar, and 2.76%, accompanied by a significant reduction in total power losses. These findings demonstrate that cable size adjustment based on technical analysis is effective in improving distribution system performance and can serve as a reference for developing efficient, data-driven distribution networks.
Increasing the Soil Resistance Value in the 20 kV Medium Voltage Distribution Network using the Soil Treatment method Taryo, Taryo; Fauzi, Andri Ahmad; Rosidi, Rosidi
PROtek : Jurnal Ilmiah Teknik Elektro Vol 12, No 1 (2025): Protek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v12i1.8238

Abstract

This study aims to enhance soil resistivity in a 20 kV electrical distribution network using a mixture of rice husk ash and mangrove wood charcoal. Rice husk ash is an additive known to reduce grounding resistance due to its water-absorbing properties, maintaining soil moisture. Effective grounding system is crucial to ensure fault currents can safely dissipate into the ground, protecting equipment and maintaining electrical distribution continuity. PUIL 2000 standards mandate soil resistivity below 5 Ω. The study method involved initial soil resistivity measurements using a Digital Earth Tester 4015 A, adding various mixtures of rice husk ash and mangrove wood charcoal around electrode planting areas, and periodic resistivity measurements over five days after four mixture additions. Scheme 1, 70% mangrove wood charcoal and 30% rice husk ash. Scheme 2, 30% mangrove wood charcoal and 70% rice husk ash. Scheme 3, 100% rice husk ash. Scheme 4, 100% mangrove wood charcoal. Results showed significant resistivity reduction, with the 30% rice husk ash and 70% mangrove wood charcoal mixture lowering resistivity to an average of 3.78 Ω, reflecting a 43.5% decrease from the initial value. Adding rice husk ash and mangrove wood charcoal to field soil enhanced soil conductivity, enabling resistance reduction to meet safety standards. This study recommends this blend as an effective and economical alternative to reduce grounding resistance in 20 kV electrical distribution systems.
ANALISIS FLASHOVER DAN WITHSTAND TEST ISOLATOR SILICONE RUBBER DAN ISOLATOR RESIN EPOKSI SISTEM DISTRIBUSI 20 kV KONDISI KERING DAN BASAH Taryo, Taryo; Utami, Pertiwi Nurul; Syakur, Abdul
Jurnal Informatika dan Teknik Elektro Terapan Vol. 11 No. 1 (2023)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v11i1.2874

Abstract

Kegagalan suatu isolator dapat terjadi karena bahan dielektrik isolator tembus listrik (breakdown) atas karena terjadinya lewat denyar udara pada permukaan isolator. Dalam kasus yang pertama, karakteristik listrik tidak dapat pulih seperti semula dan sebagian dari isolator mengalami kerusakan mekanis sehingga tidak dapat digunakan lagi dan harus diganti. Pada peristiwa lewat denyar, terjadi busur api yang menimbulkan pemanasan pada permukaan isolator dan menimbulkan hubung singkat fasa-ke-tanah. Jika relai proteksi bekerja, tegangan pada isolator menjadi nol, akibatnya busur api padam. Dengan demikian, isolator tidak sempat mengalami pemanasan yang lama sehingga terhindar dari kerusakan Sampel yang digunakan pada penelitian ini adalah isolator sillicone rubber(buatan pabrik) dan isolator resin epoksi 20 kV (different shed dan same shed). Pengukuran dilakukan dengan menggunakan tegangan tinggi bolak–balik frekuensi 50 Hz guna mendapatkan nilai besaran flashover dan pengujian ketahanan (withstand test) pada isolator uji. Penggunaan tegangan tinggi dimaksudkan agar terjadi tekanan elektris (kuat medan listrik) yang cukup pada permukaan isolator. Untuk isolator resin epoksi menggunakan perbandingan bahan dasar polimer resin epoksi jenis DGEBA (Diglycidyl Ether of Bisphenol – A) (40%), bahan pematang atau pengeras MPDA (Metaphenylene-diamine)(40%), Alumina (Al2O3) (10%), dan abu sekam padi (10%).Faktor lingkungan seperti kondisi kering dan basah sangat berpengaruh terhadap tegangan flashover dan Withstand Test.Tegangan flashover kondisi basah lebih kecil daripada saat kondisi kering sedangkan Pengujian Ketahanan Tegangan (Withstand Test) tidak dipengaruhi kondisi lingkungan.Pada pengujian flashover kondisi kering didapat hasil isolator silicone rubber 133,8 kV; Different Shed 123,5 kV dan Same shed 125,1 kV. Silicone Rubber memiliki kecenderungan nilai flashover lebih tinggi dibandingkan dengan isolator lainnya salah satunya di sebabkan oleh jarak rayap isolator silicone rubber lebih panjang.Pada pengujian flashover kondisi basah didapat hasil isolator silicone rubber 124,7 kV; Different Shed 106,4 kV dan Same shed 106,4 kV. Silicone Rubber memilikikecenderungan nilai flashover lebih tinggi dibandingkan dengan isolator lainnya salah satunya di sebabkan oleh jarak rayap isolator silicone rubber lebih panjang.Pada pengujian ketahanan tegangan (Withstand Test) kondisi kering dan basah memiliki hasil yang tidak jauh berbeda, dimana kondisi kering isolator Silicone Rubber empat sirip didapat hasil 45 kV, Same shed empat sirip didapat hasil 44 kV, dan different shed empat sirip didapat hasil 42 kV dan hasil pengujian kondisi basah Silicone Rubber empat sirip didapat hasil 45 kV, Same shed empat sirip didapat hasil 45 kV, dan different shed empat sirip didapat hasil 42 kV.
Co-Authors Abdul Syakur Fauzi, Andri Ahmad Lasmana, Lasmana Marriwanto, Pirdo Musyaffa, Muhammad Aziz Rosidi Rosidi Tobaristan, Haris Utami, Pertiwi Nurul