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Analisis Teknis-Ekonomi Pembangkit Listrik Tenaga Hybrid Solar PV/Biogas off Grid System R. Reski Eka Putra; Susi Afriani; Nanda Putri Miefthawati; Marhama Jelita
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 18, No 1 (2020): Desember 2020
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v18i1.11695

ABSTRACTReliability of the electric power system and fulfil the certification of sustainable industries in the palm oil industry are offered by utilizing the potential of renewable energy sources as power plants. This research is aimed to analyze the technical and economic aspects of the Solar PV-Biogas power plant at PT. TBS. The method used in this research is hybrid parallel with the off grid network system. In manual calculations showed an optimal generating system consisting of an anaerobic digester with a lagoon capacity of 28,934.81 m3, 1,560 kW biogas generator, 4,040.22 kWp PV array, 2000 kW bidirectional inverter, and 10,125 units of batteries with capacity of 1,547Ah. Then the system is evaluated using HOMER Pro software with project lifetime of 20 years, and the total electricity production obtained during the life of the project is able to supply loads continuously with an average excess electricity about 25.23%/years of total production. Meanwhile, in the economic analysis of hybrid power plants require an initial investment (NPC) of Rp.233,553,169,589.30, with total CO2 emissions of POME 44,073.75 tons/year, then the cost of Certified Emission Reduction is obtained about Rp.6,611,062,500/year. The calculation of economic feasibility results in a Net Present Value of Rp.136.266.578.753, Payback Period of 13,8 years, and an Internal Rate of Return of 9,41%. Based on the result of techno-economic analysis in the research, it can be concluded that this hybrid generating system has the potential to be developed for study that is more detailed if it is to be implemented.Keywords: HOMER Pro, Off-grid, PT. TBS, Solar PV/Biogas, Techno-economic.

Rancang Bangun Power Backup System Pada Pengendali Nanoparticle Sampler (Studi Kasus Nano Sampler EA-Nanonet - UIN Suska Riau) Aulia Ullah; R. Reski Eka Putra
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2019: SNTIKI 11
Publisher : UIN Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (614.506 KB)

Untuk memenuhi informasi polutan partikel padat di udara, UIN Suska Riau sebagai member EA-Nanonet melakukan pengukuran kualitas udara menggunakan nanoparticle sampler. Permasalahannya adalah ketika proses pengambilan data, sistem harus menyala secara kontiniu. Sehingga diperlukan catu daya cadangan untuk menyuplai sistem, dan ketika proses pergantian tidak boleh terjadi "drop tegangan". Tulisan ini mengusulkan power supply hibrida dengan mengombinasikan listrik PLN sebagai sistem penyuplai daya utama dan PLTS sebagai daya cadangan. Sistem terdiri dari modul surya 20Wp, SCC 10A, baterai 7Ah, adaptor 9V, IC regulator tegangan 9V. Sebagai alat penukar jaringan, digunakan rele DPDT 250VAC 10A, dan Elco 18800µf 25V ditambahkan untuk mengurangi penurunan tegangan secara tiba-tiba ketika terjadi pergantian sumber catu daya. Hasil pengukuran, konsumsi energi harian perangkat sebesar 33,285 Wh. Berdasarkan pengujian, sistem penyuplai daya cadangan untuk alat pengendali nanoparticle sampler yang dibuat berhasil mempertahankan suplai daya. Ketika listrik PLN padam, berhasil berpindah ke catu daya cadangan sistem PLTS dengan cepat tanpa mengalami jatuh tegangan.

Optimal Coordination of Directional Overcurrent Relays Using a Modified Grey Wolf Optimization Algorithm Considering Multiple Characteristic Curves Eka Putra, R. Reski; Pujiantara, Margo; Harjian, Muhammad Rivaldi; Winarta, Fadhel Putra; Fahreza, Muhammad
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 22, No 1 (2024): December 2024
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v22i1.33737

The effective coordination of directional overcurrent relays (DOCRs) is essential for maintaining the stability and dependability of power systems. This work presents a modified grey wolf optimization (MGWO) approach for addressing the DOCR coordination problem. The MGWO algorithm improves the original grey wolf optimization (GWO) by increasing convergence characteristics and balancing the exploration and exploitation stages. This equilibrium is attained by a dimension learning-hunting method and a quadratic reduction in the control parameter during the optimization phase. DOCR coordination is optimized using the MGWO method, using decision factors such as pickup current, time dial setting, and curve type. The goal is to reduce the total working time of primary relays while maintaining selectivity and shortening the discrimination time between primary and backup relays. The suggested MGWO technique is evaluated on the IEEE 8 bus system with two scenarios and compared to other optimization approaches. The results reveal that MGWO outperforms previous algorithms, achieving improvements in the objective function ranging from 5.52% to 58.19%. Additionally, the DOCR settings created by MGWO are evaluated using ETAP software to assure compliance with operational requirements and prevent violations of DOCR coordination.Keywords: Directional Overcurrent Relay Coordination, Grey Wolf Optimization, Multiple Curves, Pickup Current, Time Dial Setting.

ANALISIS SAIFI DAN SAIDI SEBAGAI INDEKS KEANDALAN PADA GARDU INDUK KUTA MENGGUNAKAN METODE SECTION TECHNIQUE AND FAILURE MODE EFFECT & ANALYSIS (FMEA) Harjian, Muhammad Rivaldi; Supriyatna, Supriyatna; Muljono, Agung Budi; Putra, R. Reski Eka
Jurnal Informatika dan Teknik Elektro Terapan Vol 13, No 2 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i2.6450

Abstrak. Keandalan adalah nilai yang diukur melalui menggunakan parameter tertentu. Dalam sistem distribusi keandalan dapat diartikan sebagai kemampuan sistem dalam menyalurkan energi listrik secara optimal. Penelitian ini menganalisis tingkat keandalan sistem distribusi di Gardu Induk Kuta, yang terdiri dari tiga penyulang utama, yaitu penyulang Kuta, Novotel, dan Teluk Awang. Evaluasi keandalan dilakukan dengan menganalisis nilai indeks keandalan berupa SAIDI dan SAIFI dengan dua metode, yaitu metode Section Technique dan Failure Mode and Effect Analysis (FMEA). Proses untuk menentukan apakah sistem distribusi memenuhi standar keandalan, penelitian ini mengacu pada SPLN No. 68 dengan nilai SAIFI sebesar 3,2 kali/pelanggan/tahun dan SAIDI sebesar 21 jam/pelanggan/tahun. Hasil analisis menunjukkan bahwa penyulang Novotel memiliki nilai SAIFI terbaik sebesar 4,26 kali/tahun/pelanggan, sedangkan penyulang Teluk Awang memiliki nilai SAIFI tertinggi sebesar 22,198 kali/tahun/pelanggan. Untuk indeks keandalan SAIDI pada penyulang GI Kuta, hanya penyulang Novotel yang sesuai standar SPLN No. 68 dengan nilai 12,9 jam/pelanggan/tahun. Sedangkan, hasil percobaan menggunakan software ETAP menunjukkan bahwa nilai SAIFI pada penyulang Novotel menjadi yang paling kecil dengan nilai 4,458 kali/tahun/pelanggan, sedangkan nilai SAIFI terbesar terjadi pada penyulang Kuta dengan 25,63 kali/tahun/pelanggan.Abstract. Reliability serves as a key indicator represented by an index or numerical value. Broadly, system reliability is defined as the capability of a power system to deliver an adequate electricity supply while maintaining satisfactory quality standards. This study conducts a comprehensive analysis of the reliability level of the distribution system at the Kuta Main Substation. The substation is supported by three feeders: the Kuta feeder, the Novotel feeder, and the Teluk Awang feeder. To assess the reliability of the distribution system, this study refers to SPLN No. 68 of 1986, which sets the SAIFI standard at 3.2 interruptions per customer annually and the SAIDI standard at 21 hours per customer per year. The lowest SAIFI value is found in the Novotel feeder at 4.26 times/year/customer and the highest SAIFI value is found in the Teluk Awang feeder at 22.198 times/year/customer. For the SAIDI values of the three feeders, only the Novotel feeder meets the PT.PLN SAIDI reliability index with a SAIDI value of 12.9 hours/customer/year. While in the ETAP simulation, the lowest SAIFI value is found in the Novotel feeder with a value of 4.458 times/year/customer and the highest in the Kuta feeder with a value of 25.63 times/customer/year.Keywods : Reliability, SAIFI, SAIDI, Section Technique, FMEA

Upaya Mendukung Diversifikasi Energi Di Lingkungan Kampus Melalui Pengisian Baterai Sepeda Listrik Mandiri Pada PLTS Off-grid Universitas Mataram Harjian, Muhammad Rivaldi; Adnyani, Ida Ayu Sri; Supriyatna; Natsir, Abdul; Perdana, I Ketut; Putra, R. Reski Eka; Tawaqqal, Akbar
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 2 (2025): April-Juni 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i2.11501

This Community service aims to design and implement an independent electric bicycle battery charging system using an Off-grid Solar Power Plant (PLTS) in the campus environment of the University of Mataram. The charging system is designed with two models: charging via an inverter using the bicycle's built-in charger and direct charging using a charging box equipped with a boost converter, charging regulator module, Arduino, current and voltage sensors, and LCD. The electric bicycle battery charging test started at 09:40–16:10 WITA. The initial voltage when charging the battery was 44.04 Volts and the initial battery charging current was 5.86 A. The battery charging time was 6.5 hours until the battery voltage reached 49.98 Volts and the total energy required was 681.02 Wh (Watt-hour). Testing was carried out on two charging methods, namely fixed and non-fixed currents, to compare charging efficiency and effectiveness. The test results show that the independent charging system can charge a 48 Volt 12 Ah electric bicycle battery in about 6.5 hours with a total energy of 681.02 Wh. Charging efficiency through the charger box ranges from 80–98%. This system is considered effective in supporting the use of renewable energy and environmentally friendly transportation in the campus environment.

Design of a Real-Time Voltage Monitoring System for PLN and Generator Using Telegram and ESP32 Wahyudi, Ricky; Prabawa, Prabawa; Putra, Reski Eka; Winarta, Fadhel; Fauzan, Reski Yulian
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 2 No. 2 (2025): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v2i2.78

In modern society, electricity is essential for both daily life and industrial operations. Frequent power outages in Indonesia frequently cause disruptions to household, office, and industrial operations, especially during periods of high demand. As a solution, generator sets (gensets) are commonly used as backup power sources. However, manual checks are still used in many installations for monitoring and switching between PLN (State Electricity Company) and genset sources, which can raise operational risks and delay response times. While switching is addressed by existing systems like Automatic Transfer Switches (ATS), they typically do not include real-time notifications or integrated remote monitoring. Using an ESP32 microcontroller and PZEM-004T voltage sensors, along with the Telegram Bot API, this study suggests designing and implementing a real-time voltage monitoring system. The system finds the active source, measures voltage from PLN and genset sources, and instantly alerts users via Telegram. In comparison to a calibrated multimeter, performance testing reveals an average notification delay of less than 5 seconds and a voltage reading error margin of less than ±2%. By offering an affordable, scalable, and interactive monitoring solution, the developed system fills in the gaps in earlier research. It improves responsiveness and dependability in settings that need constant electrical monitoring by giving users access to real-time updates on voltage levels and power source status.

Study of 150 kV Overhead Transmission Line Configuration Planning from Kambang Pesisir Selatan to Bengkulu City Putra Winarta, Fadhel; Nasir Sonni, Muhammad; Eka Putra, R. Reski; Fahreza, Muhammad; Wahyudi, Ricky
Jurnal Teknik Elektro dan Komputasi (ELKOM) Vol 7, No 2 (2025): ELKOM
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/elkom.v7i2.22636320

The need for electricity is increasing due to the rise of human living standards, therefore, the provision and supply of electrical energy must be increased. To meet the increasing electricity demand, the construction of new generating plants or expanding of the transmission network is required. The most rational alternative to overcome the growing load in the Bengkulu Province is to construct a 150 kV transmission network from Kambang (Pesisir Selatan, West Sumatra Province) to Bengkulu (Bengkulu Province). Therefore, the Bengkulu region gets electricity supply from two areas, i.e. the Central Sumatra Subsystem and the South Sumatra Jambi and Bengkulu Subsystem (S2JB). This 150 kV Transmission line span across of 396 kms that is matched with the government policy as an effort to enhance network reliability and adequacy of electricity supply in Sumatera region. This research aims to plan a transmission line from Kambang to Bengkulu City using load forecast based on the 2019-2028 RUPTL data of the Bengkulu area until year 2050. Calculation of 150 kV transmission line configuration is conducted by considering voltage regulation and load flow analysis by ETAP Software. The result of the Kambang – Bengkulu transmission line planning has capacity of 200 MW with receiving voltage of 150 kV, and frequency of 50 Hz, using 240 mm2 ACSR conductors with double circuit configuration and 2 bundle of conductor per circuit. The transmission line resistance is , the inductance of and the capacitance of . The voltage regulation is 2,1% and the total line loss is 1.574 MW

Optimalisasi Pembelajaran Sistem Proteksi Tenaga Listrik melalui Pelatihan Simulasi Teknikal di Politeknik Negeri Padang R. Reski Eka Putra; Muhammad Rivaldi Harjian; Fadhel Putra Winarta; ricky wahyudi; Muhammad Fahreza
Jurnal Pustaka Paket Vol 4 No 2 (2025): Jurnal Pustaka PAKET
Publisher : Pustaka Galeri Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55382/jurnalpustakapaket.v4i2.1240

Kegiatan pengabdian ini bertujuan untuk meningkatkan kompetensi mahasiswa Program Studi D3 Teknik Listrik Politeknik Negeri Padang dalam memahami dan menganalisis sistem proteksi tenaga listrik melalui pelatihan intensif perangkat lunak Electrical Transient Analyzer Program (ETAP). Tantangan yang dihadapi mahasiswa adalah terbatasnya keterampilan praktis dalam menggunakan perangkat lunak simulasi kelistrikan sebagai penunjang pembelajaran mata kuliah sistem proteksi. Pelatihan dilaksanakan dalam enam sesi pertemuan tatap muka dengan total durasi 12 jam pelajaran (JP). Metode pelatihan mengadopsi pendekatan berbasis studi kasus, dengan sistem distribusi 20 kV sebagai contoh penerapan. Materi pelatihan mencakup simulasi arus hubung singkat dan koordinasi proteksi. Evaluasi dilakukan melalui pretest–posttest dan kuesioner kepuasan. Hasil menunjukkan peningkatan pemahaman konsep sistem proteksi sebesar 35,1% berdasarkan nilai posttest, dan 81,8% peserta mampu membangun model sistem distribusi lengkap di ETAP. Keberhasilan kegiatan juga ditunjukkan melalui antusiasme peserta dan telah menghasilkan modul praktikum berbasis ETAP yang siap digunakan. Kegiatan ini diharapkan dapat menjadi model berkelanjutan dalam mendukung capaian pembelajaran berbasis keterampilan praktik melalui integrasi teknologi dalam proses pendidikan vokasi.

ANALISIS SAIFI DAN SAIDI SEBAGAI INDEKS KEANDALAN PADA GARDU INDUK KUTA MENGGUNAKAN METODE SECTION TECHNIQUE AND FAILURE MODE EFFECT & ANALYSIS (FMEA) Harjian, Muhammad Rivaldi; Supriyatna, Supriyatna; Muljono, Agung Budi; Putra, R. Reski Eka
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 2 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i2.6450

Abstrak. Keandalan adalah nilai yang diukur melalui menggunakan parameter tertentu. Dalam sistem distribusi keandalan dapat diartikan sebagai kemampuan sistem dalam menyalurkan energi listrik secara optimal. Penelitian ini menganalisis tingkat keandalan sistem distribusi di Gardu Induk Kuta, yang terdiri dari tiga penyulang utama, yaitu penyulang Kuta, Novotel, dan Teluk Awang. Evaluasi keandalan dilakukan dengan menganalisis nilai indeks keandalan berupa SAIDI dan SAIFI dengan dua metode, yaitu metode Section Technique dan Failure Mode and Effect Analysis (FMEA). Proses untuk menentukan apakah sistem distribusi memenuhi standar keandalan, penelitian ini mengacu pada SPLN No. 68 dengan nilai SAIFI sebesar 3,2 kali/pelanggan/tahun dan SAIDI sebesar 21 jam/pelanggan/tahun. Hasil analisis menunjukkan bahwa penyulang Novotel memiliki nilai SAIFI terbaik sebesar 4,26 kali/tahun/pelanggan, sedangkan penyulang Teluk Awang memiliki nilai SAIFI tertinggi sebesar 22,198 kali/tahun/pelanggan. Untuk indeks keandalan SAIDI pada penyulang GI Kuta, hanya penyulang Novotel yang sesuai standar SPLN No. 68 dengan nilai 12,9 jam/pelanggan/tahun. Sedangkan, hasil percobaan menggunakan software ETAP menunjukkan bahwa nilai SAIFI pada penyulang Novotel menjadi yang paling kecil dengan nilai 4,458 kali/tahun/pelanggan, sedangkan nilai SAIFI terbesar terjadi pada penyulang Kuta dengan 25,63 kali/tahun/pelanggan.Abstract. Reliability serves as a key indicator represented by an index or numerical value. Broadly, system reliability is defined as the capability of a power system to deliver an adequate electricity supply while maintaining satisfactory quality standards. This study conducts a comprehensive analysis of the reliability level of the distribution system at the Kuta Main Substation. The substation is supported by three feeders: the Kuta feeder, the Novotel feeder, and the Teluk Awang feeder. To assess the reliability of the distribution system, this study refers to SPLN No. 68 of 1986, which sets the SAIFI standard at 3.2 interruptions per customer annually and the SAIDI standard at 21 hours per customer per year. The lowest SAIFI value is found in the Novotel feeder at 4.26 times/year/customer and the highest SAIFI value is found in the Teluk Awang feeder at 22.198 times/year/customer. For the SAIDI values of the three feeders, only the Novotel feeder meets the PT.PLN SAIDI reliability index with a SAIDI value of 12.9 hours/customer/year. While in the ETAP simulation, the lowest SAIFI value is found in the Novotel feeder with a value of 4.458 times/year/customer and the highest in the Kuta feeder with a value of 25.63 times/customer/year.Keywods : Reliability, SAIFI, SAIDI, Section Technique, FMEA

Hybrid Particle Swarm Optimization–Simulated Annealing OPF for Lombok Generation Cost Reduction HARJIAN, MUHAMMAD RIVALDI; MULJONO, AGUNG BUDI; TAWAQQAL, AKBAR; PUTRA, RAJA RESKI EKA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 13, No 4: Published November 2025
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v13i4.409

This study proposes the application of Optimal Power Flow (OPF) in the Lombok Electricity System consisting of 19 buses and 7 generating units, with the main objective of reducing production costs under peak load conditions. The method used is a hybrid optimization method that combines two methods, namely the Particle Swarm Optimization and Simulated Annealing algorithms. Particle Swarm Optimization and Simulated Annealing (PSO–SA) method. Combining PSO and SA algorithms can improve the weaknesses of PSO with its jumping feature. In other words, the use of the PSO-SA algorithm is more effective than the PSO method. The simulation results show a generation cost of USD 31,158. The total generated power is 193,736 MW, which is equivalent to a total load of 193.34 MW. In addition, the voltage profile of all buses is at 0.95–1.05 pu and the power flow of all lines is below the thermal capacity. This finding confirms that the use of the PSO–SA algorithm effectively reduces operating costs without violating the system's operating constraints.

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