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All Journal International Journal of Electrical and Computer Engineering Jurnal Informatika dan Teknik Elektro Terapan PROtek : Jurnal Ilmiah Teknik Elektro Jurnal Ilmiah Flash Jurnal Teknologi Elekterika International Conference on Industrial Revolution for Polytechnic Education Jurnal ELTEK ELPOSYS: Jurnal Sistem Kelistrikan
Ahamad Rizal Sultan
Politeknik Negeri Ujung Pandang
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics

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Studi Keandalan Motor Induksi Tiga Fasa Main Drive Finish Mill 4.1 PT. Semen Tonasa A Fadhil Apriansyah Z; Ahmad Rizal Sultan
Jurnal Teknologi Elekterika Vol 15, No 2 (2018): Nopember
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (424.358 KB) | DOI: 10.31963/elekterika.v2i2.2005

Abstract

Dalam pengoperasian motor induksi 3 fasa diperlukan pengecekan dan pemeriksaan yang disebut maintenance dimaksudkan sebagai tindakan untuk mencegah dan memperbaiki kerusakan yang menjamin tingkat keandalan, dari penelitian penulis menemukan hasil efficiency tingkat keandalan yang memenuhi standarisasi perusahaan dan yang tidak, serta gangguan yang terjadi diantaranya disebabkan oleh bearing rusak, lilitan motor terbakar,serta saluran pendingin / kipas motor tidak berfungsi dan gangguan itu diatasi dengan adanya jadwal perawatan secara mingguan, bulanan, tahunan.
Penyeimbang Beban pada Gardu Distribusi dengan Metode Fuzzy Logic di Penyulang Lanosi ULP Tomoni PT.PLN (Persero) Andi Wawan Indrawan; Syarifuddin Syarifuddin; Purwito Purwito; Ashar A.R4; Ahamad Rizal Sultan; Anugrah Ilahi
Jurnal Teknologi Elekterika Vol 18, No 2 (2021): Nopember
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v5i2.3411

Abstract

Penelitian ini betujuan untuk memperbaiki nilai rugi daya pada penghantar netral pada gardu distribusi GD 651.BB yang terdapat pada penyulang Lanosi ULP Tomoni PT.PLN (Persero) dengan cara melakukan penyeimbangan beban pada sisi sekunder gardu distribusi. Penyeimbangan beban gardu distribusi dilakukan dengan cara memindahkan hubungan fasa pada tiang sambungan dari fasa yang lebih ke fasa yang kurang Penentuan fasa yang akan diseimbangkan dilakukan dengan mensimulasikan hasil penyeimbangan sebelum dan sesudah dilakukan penyeimbangan menggunakan aplikasi Matlab. .Metode penyeimbangan yang dilakukan menggunakan metode fuzzy logic berdasarkan besaran arus pada masing-masing fasa. Hasil penelitian menunjukkan bahwa persentase ketidakseimbangan beban dan rugi daya pada penghantar netral sebelum dilakukan penyeimbangan beban sebesar 35.14% (Buruk) dengan arus penghantar netral sebesar . Sedangkan setelah dilakukan penyeimbangan beban dengan logika fuzzy maka nilai persentase ketidakseimbangan beban  dan rugi daya pada penghantar netral yang diperoleh sebesar 1% (Baik) dengan arus pada penghantar netral sebesar
PERBAIKAN FAKTOR DAYA PADA INSTALASI TENAGA UNTUK BERBAGAI KONDISI PEMASANGAN Ahmad Rizal Sultan; Ahmad Gaffar
Jurnal Teknologi Elekterika Vol 14, No 2 (2017): Nopember
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.563 KB) | DOI: 10.31963/elekterika.v1i2.1224

Abstract

Penambahan kapasitor pada beban motor berperan sebagai penyuplai daya reaktif yang dibutuhkan oleh motor sehingga beban motor tersebut tidak lagi menarik banyak daya reaktif dari sistem.Daya reaktif pada sistem tenaga listrik tidak terpakai menjadi energi hanya dibutuhkan untuk membangkitkan fluks magnet pada beban induktif.Namun daya reaktif ini tetap menjadi beban bagi pembangkit listrik yang ketika nilainya besar, menyebabkan faktor daya sistem menjadi menurun.Penambahan kapasitor sebagai kompensator daya reaktif pada penerapannya, kebanyakan diletakkan dekat dengan beban yang membutuhkan kompensasi daya reaktif.Dalam penelitian ini telah dilakukan penelitian eksperimental dengan meletakkan kapasitor kompensator di posisi yang berbeda untuk melihat kondisi tanggapan sistem terhadap kondisi tersebut pada instalasi tenaga (motor listrik).Hasil eksperimental menunjukkan adanya pengaruh letak kapasitor sebagai perbaikan faktor daya untuk suatu instalasi tenaga. Perbaikan faktor daya akan optimal bilamana kapasitor diletakkan untuk posisi individual compensasion dibandingankan dengan posisi global compensation dan group compensation.
ANALISIS KOORDINASI ZONA AREA PROTEKSI PLTU MAMUJU DAN TRAFO GI MAMUJU Nurhayati Rasyid; Ahmad Rizal Sultan; Marwan Marwan
JURNAL ELTEK Vol 16 No 2 (2018): ELTEK Vol 16 No 2
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.85 KB) | DOI: 10.33795/eltek.v16i2.108

Abstract

Koordinasi zona area proteksi PLTU Mamuju dan Trafo GI Mamujuterkoordinasi melalui sistem proteksi, salah satu proteksi utama yaiturelay. Dalam penentuan setting relay, antara satu titik relay yang beradapada PLTU Mamuju dan relay yang berada pada Trafo GI Mamujuharus saling berhubungan sehingga koordinasi antara PLTU Mamujudan Trafo GI Mamuju dapat terkoordinasi dengan baik.Proteksi pada sistem tenaga listrik merupakan bagian yang sangatpenting dalam sistem ketanagalistrikan. Tujuan sistem proteksi adalahuntuk menimalisir gangguan atau melindungi sistem tenaga listrik dariakses gangguan yang terjadi pada sistem, jika sistem proteksi tidak baik,maka mengakibatkan menurunnya keandalan sistem padapendistribusian tenaga listrik. Sehubungan dengan hal ini, sehinggapenelitian bertujuan untuk mengevaluasi sistem proteksi danmenganalisis jenis gangguan yang terjadi khususnya gangguan hubungsingkat. Metode yang digunakan dalam penelitian ini adalah denganmelakukan analisa secara sederhana, menghitung arus hubung singkatdan mengevaluasi sistem proteksi. Untuk menjustifikasi hasil analisayang diperoleh maka digunakan software Etap Power Station 16.0.0 dansoftware DigSilent Power Factory 15.1.7.
Optimasi Penyeimbangan Beban Gardu Distribusi Terhadap Penurunan Rugi Energi dengan Metode Seimbang Beban Seharian Muh. Hanif Haris; Ahmad Rizal Sultan
Elposys: Jurnal Sistem Kelistrikan Vol. 7 No. 3 (2020): ELPOSYS vol.7 no.3 (2020)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (932.347 KB) | DOI: 10.33795/elposys.v7i3.663

Abstract

One of the problems that often arise in distribution systems is load imbalance in meeting electric power needs. If there is a load imbalance in the 3 phase system, the neutral wire in the transformer will be energized. This will cause losses or can be said as unused energy and does not turn into rupiah. For this reason, it is necessary to balance the load of the distribution substations so that the losses that occur do not get bigger. Based on SPLN SE 17: 2014, it is said that the large percentage of load imbalance in distribution substations that can still be tolerated is below 20%, while for distribution substations with an imbalance percentage above 20%, load balancing is necessary. Based on the Transfomer Report of PT. PLN (Persero) ULP Maros, the percentage of load imbalance at the GT.MBS027 substation before load balancing is 44.783% and after load balancing there is a decrease in the percentage of imbalance to 6.867%.Likewise, the total value of energy losses before balancing is 80.802 kWh per day. After the load balancing is done, the amount of lossesdecreases to 2.95 kWh per day. So that you can save 77,852 kWh every day. If converted to a span of 30 days, it can be saved at a powerof 900 kVA of Rp. 3,157,677.12 and at a power of 1300 kVA and above it can be saved of Rp. 3,426,920.47.
Implementasi Over Load Shedding (OLS) Pada Interbus Transformator (IBT) #3 31.5 Mva Dan IBT #5 31.5 MVA Di GI Tello 150/66 kV Untuk Menjaga Keandalan Suplai Ke GI Borongloe, GI Daya Dan GI Mandai Thaha, Sarma; Adiyanti, Annisya; Usman, Usman; Sultan, Ahmad Rizal
Jurnal Teknologi Elekterika Vol. 19 No. 1 (2022): Mei
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v6i1.3660

Abstract

Interbus transformer (IBT) is transformer that transfer power in different voltage level. Tello Substation has two IBT that change voltage level from 150 kV to 66 kV.  In order to maintain the reliability operation of Tello substation, both IBT must be not allowed to overload. Overload condition could occur if one of the transformers is fault, the normal transformer will be overload.  If an overload condition occurs, the two IBTs may not operate simultaneously. Due to this condition, it is necessary to prevent the occurrence of overload condition by applying overload shedding (OLS). This OLS application can prevent overload on the transformer if one of the transformers out of service due to fault condition. The OLS relay will work when the load on the IBT has reached its setting, by releasing the load on the 66 kV system line according to the OLS scheme as a precautionary step before all transformers trip. This research uses a case study on the Makassar Subsystem, which is one of the Sulbagsel System's electrical systems. The results showed that the amount of load that needed to be removed when implementing the OLS scheme at IBT #3 and IBT #5 31.5 MVA GI Tello was 16.86 MW. The OLS and OCR schemes are coordinated with the OLS setting current at each IBT GI Tello is 302.5 A, while the setting current for OCR at each IBT GI Tello is 330 and  time multiple setting ( tms) is 1.96
Perancangan Alat Ukur Portable Datalogger Pembangkit Listrik Tenaga Surya A Noor, Nirwan; Sultan, Ahmad Rizal; Thaha, Sarma; Riyadi, Kazman; Lukman, Musfirah Putri
Jurnal Teknologi Elekterika Vol. 20 No. 1 (2023)
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v20i1.4241

Abstract

Information about the output power of solar panels and the intensity of solar radiation is needed in the PLTS system to determine the characteristics of the potential power generated by the panels and estimate the amount of load attached. The purpose of this study was to design and manufacture a portable parameter measuring instrument and datalogger module on a microcontroller-based solar panel. Arduino Uno and ThingSpeak WebServer where with this measuring instrument solar panel parameters such as input parameters in the form of solar radiation, ambient (environment) temperature and output parameters in the form of voltage, current, latitude panel position will be measured, stored and displayed in graphical form in realtime. The system being built consists of three main parts: namely the sensor as input which will measure solar radiation data, temperature or temperature, current, voltage, latitude and longitude position of the Arduino Uno solar panel module which will acquire measurement data from sensors and the Labview application which will store and display data in realtime. The results of this study indicate that the measured current error is 1.68% and the lux error is 1.95%.
Metode FMECA (Failure Modes, Effect, and Criticallity Analysis) untuk Penentuan Prioritas Pemeliharaan dan Pencegahan Gangguan pada Penyulang 20 kV di Wilayah Kerja PT. PLN (Persero) ULP Karebosi Sultan, Ahmad Rizal; Bachtiar, Muhammad Imran; Wafa, Habib Yardan
Jurnal Teknologi Elekterika Vol. 20 No. 1 (2023)
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v20i1.4296

Abstract

Failure Modes, Effect, and Criticality Analysis is an analytical method to determine the cause of disturbance on 20 kV feeders in Unit Layanan Pelanggan Karebosi’s area of responsibility that will be used later to prioritize maintenance and prevention efforts. To determine the priority, the rating of severity, occurrence, and detection of each cause of disturbance recorded during the 2022 period is needed to be known beforehand. The cause of disturbance is prioritized based on the results of RPN (Risk Priority Number) and Criticality Analysis. Causes of disturbance that need to be prioritized for maintenance and prevention efforts are medium-voltage equipment, medium-voltage components, natural disasters, and third-party activity. The result from this analysis is to be used for reliability improvement planning in the future
Analysis of Improvement of Distribution Substation Earthing Resistance Values at PT. PLN (Persero) ULP Karebosi Usrha, Ian Maulana; Gaffar, Ahmad; Sultan, Ahmad Rizal
Jurnal Teknologi Elekterika Vol. 21 No. 2 (2024)
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v21i2.5099

Abstract

The grounding system at the distribution substation is an essential component closely related to maintaining the reliability of the electrical system. In this regard, this study aims to examine the impact of applying certain grounding methods to improve grounding resistance values at the distribution substation. The research was conducted over five months, from January 15, 2024, to June 15, 2024, at the Pannampu feeder managed by ULP Karebosi. MATLAB GUI was used to theoretically calculate using the Dwight equation related to grounding resistance (Ω) and soil resistivity (Ωm). The results of this study show that the measured grounding resistance values after applying the multiple grounding rod method decreased by 52.49% for the grounding electrode of the lightning arrester GD. KPPKU, 49.45% for the grounding electrode of the transformer body and PHB-TR GD. KPPKU, and 48.94% for the grounding electrode of the lightning arrester GD. KPPDK, which had grounding resistance values of 5.43Ω, 5.44Ω, and 8.42Ω before reconfiguration.
GENETIC ALGORITHM-BASED OPTIMIZATION OF DISTRIBUTED GENERATOR PLACEMENT IN DISTRIBUTION NETWORKS TO MINIMIZE POWER LOSSES An-Nizha, Nurul; Sofyan, Sofyan; Sultan, Ahmad Rizal; Bachtiar, Muh. Imran; Muhammad, Umar; Arni, Sitti
Jurnal Teknologi Elekterika Vol. 21 No. 2 (2024)
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v21i2.5101

Abstract

An increase in electrical energy can lead to an increase in power losses and a decrease in voltage in the system. One of the efforts made to reduce power losses that occur in the distribution network is by placing the optimal Distributed Generation (DG) in the right location. Installation of DGs with suboptimal capacity and placement location can result in greater active power losses and further reduce voltage stability. This study discusses the optimization of DG placement in the electric power distribution network using genetic algorithm methods that are known to be effective in solving complex optimization problems. The IEEE 33 bus distribution system, which is a standard system frequently employed in power flow research, was the subject of the case study. The Newton-Raphson method is a commonly used iterative method for power flow analysis due to its accuracy in calculating power flow in electrical networks. The research findings indicate that the most suitable location for two DG units with an injection power of 6,626 MW is on buses 3 and 4. The placement of this DG has the potential to substantially mitigate power losses within the distribution network. The placement of two DG units on buses 3 and 4 results in a more significant improvement in system power losses than the placement of DG units on other buses. Power losses of buses 3 and 4 experienced power losses of 67724.69 MW, while system losses were reduced by 1137621.21 MW, or 5.61 percent.
Co-Authors A Aksan A Fadhil Apriansyah Z A Noor, Nirwan A. A. Mohd Zin A.A. Ketut Agung Cahyawan W Achmad, Alamsyah Adiyanti, Annisya Ahmad Gaffar Ahmad Gaffar Ahmad Rosyid Akmal, Ahsan An-Nizha, Nurul Andi Wawan Indrawan Anugrah Ilahi Arni, Sitti Ashar A.R Ashar AR asri, andarini Asriyadi Asriyadi Bachtiar , Muhammad Imran Bachtiar, Muh. Imran bachtiar, Muhammad imran Fadel, Dwi Fachrocy Fattah, Darmin H Hamma Hamzah, Muhammad Aqmal Muslimin Haris, Muhammad Hanif Ichsan Al Kautsar Latifah Ali Lukman, Musfirah Putri M. W. Mustafa Makmur Saini Marwan Marwan Muh Khaidir Qalbi Muh. Hanif Haris Muh. Yusuf T Naely, Muchtar Naim, Kurniawati Nurhayati Rasyid Patasik, Yesthin Pranoto, Sarwo Purwito Purwito Rachmat Ramadhan, Rachmat Rahmadani, Arief Ria Fitriani Rachman Riyadi, Kazman Rosyid Idris, Ahmad Rusdi Nur Ryadin, Fahmi Sarma Thaha Sofyan Sofyan Syarifuddin Syarifuddin Thaha, Sarma Umar Muhammad Usman Usman Usrha, Ian Maulana Wafa, Habib Yardan