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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Hasil Pengabdian Kepada Masyarakat Rang Teknik Journal Indonesian Journal of Electrical Engineering and Computer Science Jurnal Darma Agung Bulletin of Computer Science and Electrical Engineering (BCSEE) Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Journal of Renewable Energy, Electrical, and Computer Engineering Schrodinger : Jurnal Ilmiah Mahasiswa Pendidikan Fisika Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN)
Rohana Ismail
Magister Electrical Engineering, Universitas Muhammadiyah Sumatera Utara, Indonesia
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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PENGARUH SAMBARAN PETIR TERHADAP KINERJA RELE JARAK DALAM MENENTUKAN TITIK GANGGUAN PADA SALURAN TRANSMISI Adam Pangestu; Surya Hardi; Rohana Rohana
Jurnal Darma Agung Vol 30 No 3 (2022): DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v30i3.2219

Abstract

Saluran transmisi harus dirancang dengan mempertimbangkan beberapa aspek seperti kehandalan, ekonomis, dan keamanan. Oleh karena itu, maka sistem proteksi saluran transmisi harus bekerja dengan sensitif, selektif, cepat, maupun handal pada saat terjadinya gangguan sambaran petir. Rele jarak dapat mendeteksi titik gangguan pada saat saluran transmisi mengalami gangguan akibat sambaran petir. Penelitian ini bertujuan menganalisa kinerja Rele Jarak dalam menentukan titik gangguan akibat sambaran petir pada Gardu Induk Glugur – Payageli. Dalam penelitian ini akan menganalisa berbagai data pendukung yang didapatkan dari PT PLN (PERSERO) untuk mengetahui setting an Rele Jarak dalam menentukan titik gangguan. Setting pada Rele Jarak yang tidak tepat akan mengakibatkan rele jarak gagal bekerja sesuai dengan zona nya. Dalam penelitian ini rele jarak bekerja sesuai dengan standard SPLN No. 0520-2K./DIR Tahun 2014 tetapi Rele jarak dalam menentukan titik gangguan berdasarkan jarak aktual dilapangan memiliki kesalahan pembacaan diatas 3%.
PENGARUH SAMBARAN PETIR TERHADAP KINERJA RELE JARAK DALAM MENENTUKAN TITIK GANGGUAN PADA SALURAN TRANSMISI Adam Pangestu; Surya Hardi; Rohana Rohana
Jurnal Darma Agung Vol 30 No 3 (2022): DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v30i3.2270

Abstract

Saluran transmisi harus dirancang dengan mempertimbangkan beberapa aspek seperti kehandalan, ekonomis, dan keamanan. Oleh karena itu, maka sistem proteksi saluran transmisi harus bekerja dengan sensitif, selektif, cepat, maupun handal pada saat terjadinya gangguan sambaran petir. Rele jarak dapat mendeteksi titik gangguan pada saat saluran transmisi mengalami gangguan akibat sambaran petir. Penelitian ini bertujuan menganalisa kinerja Rele Jarak dalam menentukan titik gangguan akibat sambaran petir pada Gardu Induk Glugur – Payageli. Dalam penelitian ini akan menganalisa berbagai data pendukung yang didapatkan dari PT PLN (PERSERO) untuk mengetahui setting an Rele Jarak dalam menentukan titik gangguan. Setting pada Rele Jarak yang tidak tepat akan mengakibatkan rele jarak gagal bekerja sesuai dengan zona nya. Dalam penelitian ini rele jarak bekerja sesuai dengan standard SPLN No. 0520-2K./DIR Tahun 2014 tetapi Rele jarak dalam menentukan titik gangguan berdasarkan jarak aktual dilapangan memiliki kesalahan pembacaan diatas 3%.
PEMODELAN PERLINDUNGAN SAMBARAN PETIR PADA TRANSFORMATOR DAYA DI GARDU INDUK TEGANGAN TINGGI Fauzi Bramantyo; Rohana Rohana; Surya Hardi
Jurnal Al Ulum LPPM Universitas Al Washliyah Medan Vol. 11 No. 1 (2023): Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan
Publisher : UNIVERSITAS AL WASHLIYAH (UNIVA) MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/alulum.v11i1.431

Abstract

Sambaran petir merupakan gangguan yang sering terjadi pada saluran transmisi dapat mengakibatkan tegangan lebih transient pada saluran transmisi merambat ke ujung jaringan dan akhirnya mencapai gardu induk. Pada gardu banyak terdapat peralatan sensitif terhadap tegangan lebih diantanya transformator. Untuk mencegah kerusakan akibat tegangan lebih dipasang Arester. Simulasi penelitian dilakukan dengan menggunakan menggunakan software Alternative Transient Program (ATP). Arester dimodelkan sebagai model IEEE. Sambaran petir disimulasi ke kawat tanah menara transmisi. Arrester dipasang dilokasi sebelum dan sesudah menara terakhir dekat dengan transformator daya. Arus surja petir standard IEC bervariasi dari 20 kA hingga 100 kA dengan kelipatan 20 kA. Hasil diperoleh tegangan lebih maksimum terjadi ketika sistem diijeksikan arus petir 100 kA dengan kondisi sistem belum terpasang Arrester dengan tegangan puncak yang terjadi pada masing-masing fasa berturut-turut, Fasa A, Fasa B dan Fasa C sebesar 3.649 kV, 2.836 KV, dan 3.473 kV. Tegangan minimum yang terjadi ketika arus petir 20 kA diinjeksikan kedalam sistem yang sudah terpasang Arrester, dan Arrester dipasang setelah menara. Nilai tegangan puncak yang timbul pada Fasa A, Fasa B dan Fasa C berturut–turut sebesar 191 kV, 175 kV dan 175 kV. Pemasangan Arester dapat menurunkan tegangan lebih pada setiap fasanya dan lokasi pemasangan arrester yang paling efektif adalah dekat dengan transformator daya. Kata kunci :
Analisis Pengaruh Bayangan Terhadap Daya Keluaran Yang Dihasilkan Oleh Pembangkit Listrik Tenaga Surya Rohana Rohana; Muhammad Fitra Zambak; Ihsanurrizqie Indra Siregar
Schrodinger Jurnal Ilmiah Mahasiswa Pendidikan Fisika Vol 4, No 1 (2023): Schrodinger Jurnal Ilmiah Mahasiswa Pendidikan Fisika
Publisher : UNIVERSITAS INDRAPRASTA PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/sch.v4i1.8848

Abstract

In using PLTS, of course there are various obstacles that can cause the quantity of power produced to decrease. There are several factors that can cause a reduced power output from the solar power plant, one of which is the shadow. In this study, the PLTS output was calculated when it was covered with shadows and not covered with shadows, which was simulated using the Helioscope software. The simulation technique is carried out by covering the PLTS with the shadow produced by the building, where the resulting shadow is for shelter up to 25%, 50% and 75%. The load used in the simulation is the total load in the PT. KAI Medan Branch. The results of this study indicate that when the PLTS condition is covered by a shadow of 25%, the effective PLTS is used with a capacity of 453.4 kWp and the resulting output power is 534 MWh. In the shading condition of 50% effective PLTS that can be used is 300.2 kWp with an output power of 356.5 MWh and when conditions are 75% effective PLTS is only 176.1 kWp and an output power of 481 MWh.
Development and Strategy of New Renewable Energy Modeling for the Future Suwarno; Muhammad Fitra Zambak; Elvy Syahnur Nasution; Rohana; Catra Indra Cahyadi
Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN) Vol. 2 (2024): Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN)
Publisher : Faculty of Engineering, Malikussaleh University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Developing and modeling strategies for sustainable renewable energy always involve complex optimization problems including design, planning, and control, which are often computationally intractable for conventional optimization methods. Advances in artificial intelligence technology have provided many optimization methods to handle these complex problems effectively and inspired by their promising performance and becoming increasingly popular nowadays for future energy. In this paper, we summarize recent advances in optimization methods inspired by advances in artificial neural network technology, evolutionary algorithms, and hybridization applied to the field of sustainable energy development. Modeling for the prediction of operational solar radiation is very important for decision-making, resource variability, and energy demand. This paper presents an ANN-based method to generate DNI forecast operations using weather and aerosol forecasts of each data. The ANN model is designed to predict weather and aerosol variables at a certain time as input, while the other models use the DNI forecast improvement period before the instant forecast. The developed model uses observations of the North Sumatra location and the results of DNI forecasting are obtained every 10 minutes on the first day with DNI forecasting compared to the initial forecast that comes down based on modeling with R2, MAE, and RMSE and provides a good fit to the experimental data. Energy modeling strategy is one of the basic concepts in maintaining security, comfort, and privacy by creating a green and emission-free environment. The concept of development and modeling strategy of new renewable energy for the future is increasingly attracting attention to be studied and observed more deeply to prepare for sustainable future energy.
Electrical Energy Audit of Operation Support Equipment at 200 MW Steam Power Plant Heri Priagusno; Surya Hardi; Rohana Rohana; Arnawan Hasibuan; Muzamir Isa
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 4 No. 1 (2024): March 2024
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v4i1.13521

Abstract

Based on data from the Pangkalan Susu steam power plant, the total amount of electrical energy used for generating process is on average 10% by the total of electrical energy generated by the plant. Increasing of electrical energy used will reduce the electrical energy sales to the network system. This research was carried out with reference according to ISO 50006:2014. This research is studies to the sample equipment with the largest rating capacity (significant energy user), such as boiler and turbine operation support equipment with on voltage 6 kV. The data of electrical energy in equipment is taken from the last 3 years historical data, namely in 2020, 2021 and 2022, Furthermore, the lowest point of electrical energy usage data was selected, then analyzed with the Linear Regression method to obtain the baseline Energy equation. The equation is used to conduct an analysis by comparing against the new data of the electrical energy in equipment, namely on April 1, 2023, the analysis showed that there was a waste of electrical energy of 164.12 kW equivalent to a fuel purchase loss of IDR 2,343,960 in 1 day. Furthermore, the baseline equation is used to input formulas in the AVEVA application (PI VISION). The Changes of electrical energy used will be monitored directly, so that if there is a waste of electrical energy, the operating pattern can be regulated directly to avoid energy waste in the electrical equipment and earn the fuel cost reduction of the Steam Power Plant.
Co-Authors AA Sudharmawan, AA Adam Pangestu Arnawan Hasibuan Catra Indra Cahyadi Elvy Sahnur Nasution Elvy Syahnur Nasution Faizar Abdurrahman Fauzi Bramantyo Hardi, Surya Hefri Yuliadi Hefri Yuliadi Heri Priagusno Ihsanurrizqie Indra Siregar Muchsin Harahap Muhammad Fitra Zambak Muzamir Isa Muzamir Isa Nurul Islami, Nurul Oni Afriyandi Riza Ria Wirasari Rizki Fadhillah Lubis Surya Hardi Surya Hardi Suwarno Suwarno Suwarno, Suwarno Widyana Verawaty Siregar