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All Journal JTEV (Jurnal Teknik Elektro dan Vokasional Jurnal Informatika dan Teknik Elektro Terapan JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING JAUR (Journal of Architecture and Urbanism Research) RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro INTECOMS: Journal of Information Technology and Computer Science Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdi Ilmu Jurnal Elektro dan Telkomunikasi Journal of Applied Engineering and Technological Science (JAETS) E-Link: Jurnal Teknik Elektro dan Informatika INFOKUM Journal of Computer Science, Information Technology and Telecommunication Engineering (JCoSITTE) Jurnal Scientia Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Info Sains : Informatika dan Sains Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Jurnal Rekayasa Elektro Sriwijaya Prosiding Konferensi Nasional PKM-CSR International Journal of Research in Vocational Studies (IJRVOCAS) COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI) JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Jurnal Nasional Teknologi Komputer Jurnal Media Computer Science Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) International Journal of Economic, Technology and Social Sciences (Injects) Jurnal Teknik Elektro dan Komputer Power Elektronik : Jurnal Orang Elektro Journal of Telecommunication and Electrical Scientific Asian Journal of Environmental Research Journal of Scientific Insights Journal of Electrical Engineering Research
Zuraidah Tharo
Univeristas Pembangunan Panca Budi
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ENERGY EFFICIENCY IMPROVEMENT IN AIR CONDITIONERS AFTER REPAIR AND MAINTENANCE PROCESS Zuraidah Tharo; Rahmaniar; Trio Putra Agung Wijaya; Feri Karyanta Bangun; Budi Hartono
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 1 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18501748

Abstract

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
Analysis of Power Quality in Technology Based Power Systems Tharo, Zuraidah; Wibowo, Pristisal; Syahputra, Mhd Rizki
Journal of Electrical Engineering Research Vol. 2 No. 1 (2026): Januari 2026
Publisher : CV. Raskha Media Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64803/joeer.v2i1.23

Abstract

The rapid advancement of power system technologies has significantly transformed the way electrical power quality (PQ) is monitored, managed, and improved. The increasing penetration of non-linear loads, automation systems, and renewable energy sources has intensified power quality challenges, including harmonic distortion, voltage sags, voltage fluctuations, and transient disturbances. This study aims to analyze the impact of modern technological approaches on power quality enhancement in contemporary power systems. A descriptive-analytical research methodology was employed through a systematic review of recent scientific literature, international standards, and technical reports related to power quality management. The collected data were analyzed using qualitative content analysis and comparative evaluation to assess the effectiveness of automation, machine learning, Internet of Things (IoT)-based monitoring systems, and power electronic mitigation devices. The results indicate that integrated technological solutions significantly improve power quality performance compared to conventional approaches. Machine learning techniques, particularly Artificial Neural Networks, demonstrate high accuracy in disturbance classification and adaptive control, while IoT-based systems enable real-time monitoring and rapid response to power quality deviations. Furthermore, power electronic devices such as Active Power Filters, Static Var Compensators, and Dynamic Voltage Restorers effectively mitigate harmonics and stabilize voltage. However, challenges related to implementation cost, system complexity, cybersecurity, and regulatory inconsistency remain. The study concludes that an integrated, intelligent, and data-driven framework is essential for sustainable power quality management in modern power systems.
MEKANISME PERENCANAAN PLTS OFF-GRID UNTUK DAYA 1300VA PADA RUMAH TINGGAL Romi Masmur Pasaribu; Zuraidah Tharo
E-Link: Jurnal Teknik Elektro dan Informatika Vol. 18 No. 2: Oktober 2023
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/e-link.v18i2.6129

Abstract

Pemasangan Pembangkit Listrik Tenaga Surya (PLTS) pada rumah tinggal dengan pasokan PLN 1300 VA membuka potensi besar bagi penggunaan energi baru dan terbarukan (EBT) di masa depan. Penelitian ini mengungkapkan hasil analisis sistem PLTS sebagai sumber tambahan listrik untuk rumah dengan rata-rata konsumsi harian sekitar 10,816 kWh. Sistem PLTS yang diterapkan merupakan tipe off-grid, dengan komponen utama terdiri dari panel surya 500 Wp, inverter 2000 W, dan baterai Lithium-ion 24 V 100 Ah. Sebelum adanya PLTS, penggunaan listrik dari pasokan PLN mencapai 249 kWh dengan biaya sekitar Rp. 359.730 per bulan, berdasarkan tarif Rp. 1.444,70/kWh. Namun, setelah pemasangan PLTS, penggunaan listrik turun menjadi 163,5 kWh dengan estimasi biaya sekitar Rp. 237.000 per bulan, dengan asumsi tarif Rp. 1.444,70/kWh. Dengan kehadiran PLTS, terlihat penurunan yang signifikan dalam tagihan listrik yang harus dibayar setiap bulan.
PERENCANAAN MEP (MECHANICAL, ELECTRICAL DAN PLUMBING) PADA BANGUNAN CAGAR BUDAYA WARENHUIS DI MEDAN Naufal Aushaf Hadi; Zuraidah Tharo; Siti Anisah
E-Link: Jurnal Teknik Elektro dan Informatika Vol. 18 No. 2: Oktober 2023
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/e-link.v18i2.6138

Abstract

Gedung Warenhuis dibangun pada 1919, merupakan gedung toko serba ada pertama di Sumatera dan terbesar di Hindia Belanda. Namun, keadaan gedung saat ini rusak berat secara keseluruhan. Berdsarkan SK No 433/28.K/X/2021 Tahun 2021 tentang bangunan, situs, kawasan dan struktur cagar budaya kota, menjadikan Gedung Warenhuis menjadi salah satu objek cagar budaya dari 93 objek yang ada. Dengan demikian dilakukanlah kajian yang bertujuan agar dapat menjadi panduan konservasi yang sesuai dengan kaidah dan aturan yang berlaku di Indonesia dan Kota Medan. Dalam upaya revitalisasi gedung, perencanaan MEP sangat dibutuhkan dengan tujuan agar bangunan ini dapat berfungsi sebagaimana mestinya. Berdasarkan hasil data yang ada, gedung warenhuis memiliki luas 3779.24m2 dengan konsumsi daya listrik 200.95 KW dan kebutuhan air 32.58m3.
Analysis of Transformer Dielectric Quality at the Kisaran Main Substation of PT. PLN (Persero) ULTG Kisaran Rizinski Khaliksi; Parlin Siagian; Zuraidah Tharo
Jurnal Media Computer Science Vol 5 No 2 (2026): April
Publisher : LPPJPHKI Universitas Dehasen Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jmcs.v5i2.10989

Abstract

This study presents a comprehensive analysis of the dielectric quality of a 60 MVA power transformer at the Kisaran 150kV Substation, North Sumatra, Indonesia. The transformer, manufactured by PAUWELS TRAFO and operated since 2011, operates at an average load of 33% with an ONAN/ONAF cooling system. Dielectric testing yielded a breakdown voltage of 80.2 kV, a moisture content of 17.62 mg/kg, an acid number of 0.108 mgKOH/g, and dissipation factors of 0.173% (primary), 0.190% (secondary), and 0.243% (tertiary). The bushing dissipation factor ranged from 0.247% to 0.271%. The interfacial tension measured 26.8 mN/m with a flash point at 148°C. Insulation resistance testing showed values of 4.9 GΩ (primary), 3.41 GΩ (secondary), and 3.40 GΩ (tertiary) with polarization indices of 3.06, 1.48, and 1.47, respectively. Operating temperatures remained within acceptable limits at 63°C (peak oil) and 62°C (winding). Analysis based on IEC 60422:2013 and PLN standards indicated that the transformer was in good operational condition with all parameters within acceptable ranges, although the interface voltage was close to the warning threshold. This study provides valuable baseline data for predictive maintenance strategies and demonstrates the importance of integrated dielectric testing for transformer health assessment.
Comparative Analysis of Cooling Systems in Solar Power Plants on System Performance Imelda Martalata Siburian; Zuraidah Tharo; Rahmaniar, Rahmaniar
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3085

Abstract

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.
ANALISIS PERBAIKAN JATUH TEGANGAN DAN REDUKSI RUGI DAYA MELALUI UPRATING KONDUKTOR SERTA PENYEIMBANGAN BEBAN PADA SISTEM DISTRIBUSI DI PT. PLN ULP TEBING TINGGI Ismail; Dino Erivianto; Zuraidah Tharo
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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

Abstract

Analisis perbaikan jatuh tegangan dan reduksi rugi daya melalui uprating konduktor serta penyeimbangan beban pada sistem distribusi di PT. PLN ULP Tebing Tinggi. Sistem distribusi tenaga listrik sering menghadapi tantangan operasional signifikan pada jaringan tegangan rendah, terutama di wilayah dengan karakteristik panjang saluran besar, konduktor berpenampang terbatas, dan ketidakseimbangan beban antar fasa. Di ULP Tebing Tinggi, fenomena jatuh tegangan tinggi tercatat di ujung feeder jauh dari gardu utama, sementara rugi daya akibat aliran arus dan resistansi saluran menjadi beban biaya dan teknis bagi penyedia layanan. Penelitian ini menggunakan pendekatan kuantitatif berbasis analisis teknis yang menggabungkan pengukuran lapangan, perhitungan matematis, dan simulasi sistem tenaga menggunakan software ETAP. Pengukuran menunjukkan beban total gardu TT38 mencapai 91,69 kVA dengan ketidakseimbangan arus yang signifikan. Tegangan di ujung jaringan mengalami penurunan drastis menjadi 184 V dari tegangan pangkal 222-228 V, dengan jatuh tegangan sebesar 25,26% dan rugi daya 14,94 kW. Skenario uprating konduktor dengan mengganti kabel TIC 2×10 mm² menjadi TIC 3×70+1×50 mm² pada segmen 250 meter terakhir menunjukkan peningkatan signifikan. Hasil perhitungan dan simulasi ETAP konsisten menunjukkan penurunan jatuh tegangan dari 25,26% menjadi 3,61% (202,24 V) dan pengurangan rugi daya dari 14,94 kW menjadi 12,37 kW. Perbaikan ini berhasil membawa tegangan minimum ke dalam batas standar SPLN (198-231 V) yang sebelumnya tidak terpenuhi.
A Performance Analysis of Electric Power Transmission Systems Using Ultra-High Voltage Direct Current (UHVDC) Technology Miftah Hadi R Harahap; Zuraidah Tharo; Parlin Siagian
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3099

Abstract

The increasing demand for electrical energy and the growing distance between power generation sources and load centers require transmission systems capable of delivering large amounts of power efficiently and reliably. Ultra-High Voltage Direct Current (UHVDC) technology has emerged as an effective solution for long-distance, high-capacity power transmission, offering lower power losses and higher efficiency compared to conventional transmission systems. This study aims to analyze the performance of electric power transmission systems using UHVDC technology, identify factors affecting system performance, and evaluate the impact of transmission distance on system efficiency and reliability. The research employs a quantitative descriptive approach through modeling and simulation of a UHVDC transmission system. Key performance parameters analyzed include power losses, transmission efficiency, voltage stability, and power transfer capability under various transmission distance scenarios. The results indicate that UHVDC systems are capable of transmitting large-scale power over long distances with relatively low power losses. Although increasing transmission distance leads to higher power losses, the rate of increase is significantly lower than that of conventional alternating current (AC) transmission systems, allowing UHVDC systems to maintain high efficiency. Furthermore, the UHVDC system demonstrates good voltage stability and operational reliability when operating within its design limits. Based on the findings, it can be concluded that UHVDC technology is a reliable and efficient solution for long-distance, high-capacity power transmission and has strong potential to support large-scale renewable energy integration and the development of modern power system infrastructure.
Transformer Life Prediction Analysis Based on Thermal Aging at PT Ultra Sumatera Dairy Farm Wageman A. Naiborhu; Haris Gunawan; Zuraidah Tharo
Jurnal Info Sains : Informatika dan Sains Vol. 16 No. 02 (2026): Info sains, 2026
Publisher : SEAN Institute

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

Abstract

A transformer is a vital component in the electrical power distribution system that functions to transfer energy from medium voltage to low voltage. The reliability of a transformer is highly influenced by the thermal condition of its insulation, which determines its service life. This study aims to predict the effective lifespan of a 1250 kVA distribution transformer at PT. Ultra Sumatra Dairy Farm uses the thermal aging method based on the IEEE C57.91-2011 standard. The data used includes nameplate information, daily load profiles, and average ambient temperature. Based on the measurements, the transformer operates at an average load of 422.7 kVA (33.8% of its rated capacity) and an ambient temperature of 23°C. The calculated results show a hottest-spot temperature of 49.55°C with an aging acceleration factor (FAA) of 0.000649. The daily Loss of Life (LOL) value of 0.00000865% indicates that thermal aging occurs very slowly. Based on the Equivalent Aging Factor (FEQA), the theoretical effective lifespan of the transformer reaches approximately 31,660 years. However, in practice, the actual lifespan of the transformer is estimated to range between 25–35 years due to non-thermal factors such as moisture, oil oxidation, and load fluctuations. These results indicate that the thermal condition of the transformer remains very safe and efficient for long-term operation.
Analysis of the Effect of Capacitor Bank Integration and Harmonic Filters on Improving Energy Efficiency and the Reliability of the Electrical System at Hotel Danau Toba Medan Andri F M Siahaan; Zuraidah Tharo; Parlin Siagian
Jurnal Info Sains : Informatika dan Sains Vol. 16 No. 02 (2026): Info sains, 2026
Publisher : SEAN Institute

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

Abstract

Hotel Danau Toba Internasional Medan consumes a large amount of electricity due to the use of inductive and non-linear loads, which can reduce power quality. This study aims to evaluate the existing power quality and assess the effect of installing capacitor banks and harmonic filters in improving the efficiency and reliability of the electrical system. The methods used in this study include direct measurements, analysis referring to the IEEE Std. 519-2014 standard, and simulations with ETAP software version 16.0.0. The measurement results show a low power factor of 0.759, with a voltage drop reaching 15.65 kV from a nominal voltage of 20 kV, and the highest voltage unbalance recorded at 2.64% on panel 1 during the weekend. Based on the simulation results, the installation of a capacitor bank with a capacity of 525.22 kVAR can improve the power factor to 0.972 and reduce the current from 2015.2 A to 1782.6 A. To prevent resonance caused by harmonics, a reactor detuned by 8% is used. This implementation has been proven to increase energy efficiency, maintain system stability, and generate operational cost savings of IDR 221,400,000 annually.
Co-Authors AA Sudharmawan, AA Abendanon Siagian ACHMAD FAUZI Adi Sastra P Tarigan Ahmad Faisal Akbar Wirayuda Alfauzan, Alfauzan Amani Darma Tarigan Amani Darma Tarigan Amani Darma Tarigan Amani Darma Tarigan Andrawadi, Candra Andri F M Siahaan Andriana, Melly Angga Maulana Anjani, Bella Arnanda Putra Arnita , Vina Asrul Andi Bambang Nurdiyansyah Bambang Sugino Barus , Dwi Permatasari Barus, Michael J.T. Bawamenewi, Helpianus Brid, Dwiki Darma Nuriono budi hartono Dalimunthe, Erpandi Dalimunthe, Muhammad Erpandi David Siringoringo Deni Firmansyah Diana Pratiwi Dicky Lesmana Dikcy Lesmana Dimas Nanda Ikhsan Dwi Permatasari Barus Eddy Sutejo Eddy Sutejo, Eddy Eka Rahma Daniati Eka Umi Kalsum Erwin Syahputra Erwin Syahputra Syahputra Fajar Ahmad Farizal, Muhammad Fatur Rahman fatur Rahman, fatur Feri Karyanta Bangun God Friend Pastian Lase Gultom , Jones Hamdani Hamdani . Hamdani Hamdani Hamdani Hamdani Hamdani Hamdani Hamdani Hamdani Harahap, Yusrizal Pahlevi Haris Gunawan Hidayat Yusar, Jumantri Imelda Martalata Siburian Irham Amando Lubis Irwan Roganda Malau Ismail Jones Gultom Josua Delpiero Sinaga Kevin Tri Yuda Khoiri, Muhammad Lamsyah Abdil Hafiz Lesmana, Dicky Loi, Roberto Yusuf M Rizki Liano M. Samsul Hidayat Mei Winda Siagian Melly Andriana Melly Andriana Mhd Idris Miftah Hadi R Harahap Muhammad Angga Dwi Andika Muhammad Erpandi Dalimunthe Muhammad Erpandi Dalimunthe Muhammad Fahreza Muhammad Fahreza Muhammad Rizki Syahputra Muhammad Rizki Syahputra Naufal Aushaf Hadi niar, rahma Nimas Deria Wijayanti Notatema Waruwu Novalinda Pane, Samuel Parlin Siagian Pasaribu, Waldi Prabowo Prabowo, Deni Pradito, Ferdy Haykal Pristisal Wibowo Purba, Alexius Purba, Johans Luther Putra Andhika Putra, Fariz Aditya Putra, Hadi Wiranata Rahmad Mulyadi Rahmadani, Nur Fadilah Rahmadhani Fitri Rahmadsyah Pulungan Rahmaniar Rahmaniar Rahmaniar Rahmaniar Rahmaniar, Rahmaniar Raihan Nurharfi Ramadhan, Roby Ramayana Bachtiar Ramayana Ramayana Ramayana Ramayana Ranses Wahyudi Sijabat Ridho, M. Ridwan, Wahyu Rikky Yaldi Girsang Riski, Alwi Rizinski Khaliksi Rizky, M. Ariansyah Robby Wardani Roberto Yusuf Loi Romi Masmur Pasaribu Roy Leo Rensius Hutauruk Ruth Chyntia Rouli Marpaung Sembiring, Regi Jesaya Septiany, Anggie Sianipar, Tigor Pangihutan Sihombing, Charles Ricardo Sihombing, Febrian Simbolon, Banglas Simbolon, Joniko Siregar, Arif Zulfahri Siregar, Israma Dani Siregar, Maimunah Siregar, Maimunah Siti Anisah Siti Anisah Siti Anisah Siti Anisah Siti Anisah Siti Anisah Siti Anisah Siti Anisah Siti Anisah SK, Gavana Mustaqim Slamet Budi Arto Situmeang Solin, Yunus Satria Solly Aryza Suhardi Suhardi Syafitri, Auna Syafruddin H.S. Syahputra, Mhd Rizki Syahrobi, Syahrobi Syawal Sihite Tanzil Al Malik Taqwim, Ahsani Trio Putra Agung Wijaya Umi Kalsum, Eka Vina Arnita Vinda Sri Mulyani H Wageman A. Naiborhu Wibowo , Pristisal Wibowo, Pristisal Yan Bastian Lumbantobing Zulkarnain Zulkarnain Lubis