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<![CDATA[Analisis Penentuan Jarak Gangguan pada Saluran Transmisi 150 KV di Unit PT PLN ULTG Prabumulih dengan Metode Double Ended ]]>
<![CDATA[Wendi Afriandi]]>;
<![CDATA[Rahmaniar Rahmaniar]]>;
<![CDATA[Pristisal Wibowo]]>
<![CDATA[ Jurnal Sosial Teknologi Vol. 5 No. 7 (2025): Jurnal Sosial dan Teknologi ]]>
Publisher : <![CDATA[CV. Green Publisher Indonesia ]]>
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DOI: 10.59188/jurnalsostech.v5i7.32220
<![CDATA[Penelitian ini bertujuan untuk menganalisis penentuan jarak gangguan pada saluran transmisi 150 kV di PT PLN ULTG Prabumulih menggunakan metode Double Ended. Dengan meningkatnya kebutuhan energi listrik, keandalan sistem transmisi menjadi kritis. Gangguan pada saluran transmisi dapat mengakibatkan pemadaman listrik yang berkepanjangan, sehingga penting untuk menentukan lokasi gangguan secara akurat. Penelitian dilakukan dengan mengumpulkan data dari gangguan yang terjadi, membandingkan hasil perhitungan jarak dengan metode Double Ended dan pembacaan relay Distance. Hasil penelitian menunjukkan bahwa metode Double Ended lebih akurat dalam menentukan jarak gangguan, dengan rata-rata selisih hanya satu tower dari lokasi sebenarnya, sementara pembacaan relay Distance menunjukkan selisih yang lebih besar. Temuan ini diharapkan dapat membantu teknisi dalam mempercepat proses pemulihan sistem kelistrikan.]]>
<![CDATA[Evaluasi Kehandalan Jaringan Listrik ULP 3 Binjai Menggunakan Metode Simulasi Monte Carlo Berbasis MATLAB ]]>
<![CDATA[Yunus Satria Solin]]>;
<![CDATA[Rahmaniar Rahmaniar]]>;
<![CDATA[Zuraidah Tharo]]>
<![CDATA[ JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 10, No 2 (2024): JTEV (Jurnal Teknik Elektro dan Vokasional) ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/jtev.v10i2.130746
<![CDATA[Kehandalan jaringan listrik merupakan aspek krusial dalam penyediaan layanan energi yang berkelanjutan. Penelitian ini bertujuan untuk mengevaluasi kehandalan jaringan listrik di Unit Layanan Pelanggan (ULP) 3 Binjai menggunakan metode Simulasi Monte Carlo yang diimplementasikan melalui perangkat lunak MATLAB. Studi ini menggunakan data historis gangguan, topologi jaringan, dan parameter operasional sistem distribusi listrik ULP 3 Binjai selama periode satu tahun terakhir (2023). Metode Simulasi Monte Carlo dipilih karena kemampuannya dalam menangani ketidakpastian dan variabilitas sistem yang kompleks. Implementasi berbasis MATLAB memungkinkan analisis yang lebih efisien dan akurat. Penelitian ini menghitung indeks kehandalan utama seperti System Average Interruption Frequency Index (SAIFI) dan System Average Interruption Duration Index (SAIDI). Hasil simulasi menunjukkan bahwa ULP 3 Binjai memiliki nilai SAIFI 0.88 gangguan/pelanggan/tahun dan SAIDI 1.53 jam/pelanggan/tahun jam/pelanggan/tahun untuk tahun 2023. Analisis sensitivitas juga dilakukan untuk mengidentifikasi komponen kritis yang memiliki dampak signifikan terhadap kehandalan sistem. Berdasarkan hasil evaluasi, diusulkan untuk meningkatkan kehandalan jaringan, termasuk penguatan infrastruktur pada titik-titik kritis dan optimalisasi jadwal pemeliharaan. Penelitian ini memberikan kontribusi dalam pengembangan metodologi evaluasi kehandalan yang dapat diterapkan pada sistem distribusi listrik serupa di Indonesia, dengan fokus pada analisis data terkini.]]>
<![CDATA[Performance Study of OCR (Over Current Relay) and GFR (Ground Fault Relay) Relays as Protection In 20 Kv Cubicles in Selayang GH PT. PLN UP2D North Sumatra ]]>
<![CDATA[Apda Eriansyah]]>;
<![CDATA[Parlin Siagian]]>;
<![CDATA[Rahmaniar Rahmaniar]]>
<![CDATA[ Jurnal Info Sains : Informatika dan Sains Vol. 16 No. 02 (2026): Info sains, 2026 ]]>
Publisher : <![CDATA[SEAN Institute ]]>
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<![CDATA[Power system protection is crucial for maintaining energy distribution reliability. This study aims to evaluate the performance of Over Current Relay (OCR) and Ground Fault Relay (GFR) as protection systems in 20 kV cubicles at Selayang Switching Station (GH) PT PLN UP2D North Sumatra. The research method used is descriptive quantitative with an engineering case study approach. Data were collected through field observations, short-circuit fault current calculations, and physical testing using the Omicron CMC 353 secondary current injection tool. The results show that the maximum short-circuit fault current of 14.4 kA is still below the circuit breaker's breaking capacity of 16 kA. The pick-up current settings on feeders SLY 05, SLY 06, and SLY 07 met the sensitivity criterion (1.2 x Imax), and the time coordination (grading margin) between protection devices was within the ideal range of 0.25 to 0.5 seconds. Validation through injection testing showed high accuracy with an average operating time deviation of less than 10% according to PLN standards. The conclusion of this study confirms that the protection system at GH Selayang operates efficiently, precisely, and reliably in securing network assets and ensuring the continuity of electricity supply.]]>
<![CDATA[ENERGY EFFICIENCY IMPROVEMENT IN AIR CONDITIONERS AFTER REPAIR AND MAINTENANCE PROCESS ]]>
<![CDATA[Zuraidah Tharo]]>;
<![CDATA[Rahmaniar]]>;
<![CDATA[Trio Putra Agung Wijaya]]>;
<![CDATA[Feri Karyanta Bangun]]>;
<![CDATA[Budi Hartono]]>
<![CDATA[ Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 1 (2026): Multidiciplinary Output Research For Actual and International Issue ]]>
Publisher : <![CDATA[RADJA PUBLIKA ]]>
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DOI: 10.5281/zenodo.18501748
<![CDATA[This study aims to analyze the improvement in energy efficiency of air conditioning (AC) systems after repairs and routine maintenance. The use of unmaintained AC units leads to an increase in energy consumption, which results in higher operational costs. This research measures the changes in electrical power consumption and cooling capacity at two locations: the village office and a residential house. The results show a 25% reduction in power consumption at both locations after the repairs were made, as well as an 8.6% improvement in cooling capacity at the village office and a 13.6% improvement at the residential house. The study also identifies factors that affect energy efficiency, such as refrigerant leaks and component cleanliness. The findings of this study are expected to provide insights into the importance of maintenance and repairs for AC systems to enhance energy efficiency]]>
<![CDATA[Energy Efficiency Analysis Through Solar Power Generation System as a New Renewable Energy Source at PT. Bunga Flour Mils Medan ]]>
<![CDATA[Muhammad Rizki Alfurqon]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Rahmaniar Rahmaniar]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2960
<![CDATA[The development of the industrial revolution 4.0 has led to a surge in energy demand that continues to increase, driving the need for the implementation of new renewable energy sources, one of which is the Solar Power Plant (PLTS). This study aims to analyze the energy efficiency generated by the PLTS system at PT. Bunga Flour Mills Medan as an alternative solution in reducing dependence on conventional energy. The research method includes measuring output power, energy conversion efficiency, and analyzing the costs and benefits of implementing PLTS. The results of the study indicate that the implemented PLTS system has a fairly high efficiency with a significant contribution to saving the company's electricity consumption. In addition, the use of PLTS also has a positive impact on reducing carbon emissions and electricity operational costs in the long term. Thus, PLTS can be an effective and sustainable solution in supporting energy efficiency in the industrial sector.]]>
<![CDATA[Comparative Analysis of Cooling Systems in Solar Power Plants on System Performance ]]>
<![CDATA[Imelda Martalata Siburian]]>;
<![CDATA[Zuraidah Tharo]]>;
<![CDATA[Rahmaniar Rahmaniar]]>
<![CDATA[ INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026 ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v14i02.3085
<![CDATA[Temperature increase in solar panels is one of the main factors that reduces energy conversion efficiency in Solar Power Plant systems. To address this issue, fluid-based cooling methods have become an effective alternative in maintaining panel performance stability. This study analyzes the performance comparison of cooling systems using freshwater and saltwater on panel temperature changes and their effects on power output efficiency. The experimental method was conducted by operating solar panels under the same solar radiation conditions, then applying two types of cooling fluids separately to observe differences in temperature reduction and electrical performance improvement. The analysis results show that both cooling methods can significantly reduce panel temperature, but there are differences in thermal characteristics between them. Cooling using saltwater demonstrates better heat transfer capability, but potentially causes corrosion effects in the long term. Meanwhile, freshwater provides quite effective cooling stability with lower damage risk. These findings provide a comprehensive overview regarding the selection of optimal cooling media to enhance PV system efficiency in tropical conditions.]]>
<![CDATA[Analysis of Electrical Network Reliability and K3l Risk Management Using Fmea and Hirarc at PT PLN (Persero) ULP Trade ]]>
<![CDATA[Ahmad Budiarto]]>;
<![CDATA[Rahmaniar Rahmaniar]]>;
<![CDATA[Hamdani Hamdani]]>
<![CDATA[ INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026 ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v14i03.3127
<![CDATA[The reliability of the electricity distribution network and the implementation of Occupational Safety and Health (K3L) are crucial factors in maintaining the continuity of electricity supply and minimizing the risk of work accidents. This study aims to analyze the risk management of electrical network disruptions at PT PLN (Persero) ULP. The trading period of July–December 2025 used the Failure Mode and Effect Analysis (FMEA), Hazard Identification, Risk Assessment and Risk Control (HIRARC), and Integrated Risk Framework (IRF) methods. Data were collected through field observations, structured interviews, and documentation of disruption reports. The Risk Priority Number (RPN) value was calculated based on the parameters of Severity, Occurrence, and Detection, while the K3L Risk Rating (RR) was obtained from the multiplication of Severity and Likelihood. The results showed that the Short/Flashover Transformer had the highest Integrated Risk Index value of 3150 with the Critical category, followed by Broken Lightning Arrester (IRI=2940) and Broken HUTM Cable (IRI=2400) in the High Risk category. The integration of FMEA and HIRARC through the IRF approach has been proven to provide a more comprehensive basis for risk-based decision-making than using a single method, while strengthening the K3L management system and systematically improving the reliability of the distribution system.]]>
<![CDATA[Overgeneration Shedding Simulation Using Digsilent at the New Aurduri 500KV and Betung 275KV Extra High Voltage Substations ]]>
<![CDATA[Anggoro Indra Kusuma Atmaja]]>;
<![CDATA[Rahmaniar Rahmaniar]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>
<![CDATA[ INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026 ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v14i03.3128
<![CDATA[The reliability of the electric power system is greatly influenced by the system's ability to maintain the loading of the main equipment within safe limits during a disturbance. In the Sumbagselteng system, conductor disturbances have the potential to cause excessive loads on the Inter Bus Transformer (IBT) due to the concentration of generation in the South Sumatra region. Therefore, the implementation of the Over Generation Shedding (OGS) scheme is required as part of the defense scheme to protect the IBT from overloading conditions. This study aims to analyze the effectiveness of the OGS scheme in limiting the fault current and improving the dynamic stability of the system. The method used is a dynamic simulation using DigSILENT software with a short circuit fault scenario and a two-stage generator shedding based on definite time characteristics. The parameters analyzed include the IBT current, loading percentage, rotor angle, logarithmic decrement, and damping ratio. The simulation results show that the IBT current increases to around 1800 A with a loading reaching 110–133% during the disturbance. After the 340 MW generator shedding in two stages, the current drops to around 490 A and the loading returns below 65%. The damping ratio ranged from 0.017 to 0.069, indicating the system remained stable with improved damping. The OGS scheme proved effective in reducing IBT loading and improving system stability under disturbance conditions.]]>
<![CDATA[Hybrid system energy simulation for housing ]]>
<![CDATA[Agus Junaidi]]>;
<![CDATA[Rahmaniar Rahmaniar]]>;
<![CDATA[Suwarno Suwarno]]>;
<![CDATA[Catra Indra Cahyadi]]>;
<![CDATA[Wanapri Pangaribuan]]>;
<![CDATA[Hot Marindo Hutabarat]]>;
<![CDATA[Arsita Devi Tambunan]]>;
<![CDATA[Albert Panjaitan]]>
<![CDATA[ International Journal of Applied Power Engineering (IJAPE) Vol 15, No 1: March 2026 ]]>
Publisher : <![CDATA[Institute of Advanced Engineering and Science ]]>
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DOI: 10.11591/ijape.v15.i1.pp59-68
<![CDATA[Fossil fuel power plants are still used as a source of energy around the world and have a significant impact on emissions and environmental pollution. To reduce these emissions, renewable energy offers a solution that can be applied in future housing. This study proposes a simulation using HOMER to determine the most cost-effective composition of hybrid renewable energy systems in housing. This simulation can combine photovoltaic (PV) systems, wind power (WP), and a converter that functions to change DC to AC from PV to obtain an alternating current (AC) system. The hybrid combination of PV and WP proves to be the most appropriate and economical choice at the research location. The results of the study showed that the installation of a hybrid system in housing, with an initial investment cost of IDR 107,474.43 million and an annual operating cost of IDR 22,540.23 million, is 41% lower than conventional fossil fuel-based systems. Research data shows that the project's payback period is estimated to be around 11 years. These findings can be recommendations for similar systems in regions with similar contours and geography. Apart from that, positive monetary impacts can provide incentives for policymakers to implement similar hybrid systems, thereby contributing to the goal of global emissions neutralization.]]>
<![CDATA[Analysis of the Efficiency of Solar Power Plants as an Alternative Energy Source CCTV Integrated with Smartphones ]]>
<![CDATA[Dimas Yudho Wibowo]]>;
<![CDATA[Dino Erivianto]]>;
<![CDATA[Rahmaniar Rahmaniar]]>
<![CDATA[ JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol. 9 No. 1 (2025): Journal of Electrical and System Control Engineering ]]>
Publisher : <![CDATA[Universitas Medan Area ]]>
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DOI: 10.31289/jesce.v8i2.14179
<![CDATA[Solar energy is one of the renewable energies which is an alternative energy for producing electrical energy. The first research stage involves conducting literature studies and field observations related to the problem to be researched. Next, collect the data needed to plan an off-grid solar power plant at the Medan City Study House. This PLTS is also capable of being an alternative energy source for CCTV which is capable of supplying electrical energy for 24 hours. Where CCTV plays a very important role in the Medan City Study House as the security system used. PLTS is highly recommended to be implemented in densely populated areas because PLTS has very minimal emissions and is environmentally friendly. The cost of energy (COE) / kWh from this PLTS is $0.073/kWh. Meanwhile, the price per kWh from PLN is $0.089/kWh. Solar panels produce 6,694 kWh of energy per year. The energy produced by solar panels is sufficient to supply load needs which only require 153,300 kWh of energy per year.]]>
