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All Journal MEDIA ELEKTRIKA Elkom: Jurnal Elektronika dan Komputer Jurnal Ilmiah Sultan Agung Jurnal Rekayasa elektrika Jurnal Sains Farmasi dan Kesehatan
Dedi Nugroho
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Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Neuroscience Nursing Physics Public Health Veterinary

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PENGARUH PERUBAHAN KONFIGURASI SALURAN JARINGAN SUTET 500 KV TERHADAP MEDAN MAGNET Dedi Nugroho
MEDIA ELEKTRIKA Vol 2, No 1 (2009): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.651 KB) | DOI: 10.26714/me.2.1.2009.%p

Abstract

Sistem pengiriman daya listrik melalui jaringan trasmisi saluran udara tegangan ekstra tinggi(SUTET) memberikan berbagai keuntungan seperti pengiriman daya listrik lebih besar, kerugian dayabertambah kecil, keandalan tinggi, dan sebagainya, namun disisi lain telah menimbulkan kekhawatiran bagikesehatan masyarakat khususya yang tinggal dibawah atau disekitar SUTET akan efek negatif dari medanmagnet yang ditimbulkan oleh SUTET tersebut. Berdasarkan hal itu badan organisasi kesehatan dunia(WHO) telah menetapkan batas ambang medan magnet adalah 0,3 mT, sementara PLN menetapkan 0,5 mT.Ada berbagai teknik untuk menurunkan besarnya medan magnet dari SUTET yaitu diantaranya :mengubah susunan konfigurasi saluran, menambah ketinggian saluran, memperbesar ukuran konduktor danmemperkecil jarak konduktor antar fasa. Pada bahasan disini ditunjukkan perubahan konfigurasi saluranberakibat pada perubahan nilai-nilai kerapatan medan magnet dari berbagai jarak pengukura, sedangkanperhitungan kerapatan medan magnet didasarkan pada pemakaian metoda bayangan.Berdasarkan hasil perhitungan ditunjukkan bahwa perubahan konfigurasi sistem saluran akanmempengaruhi besarnya kerapatan medan magnet. Dari hasil perhitungan untuk arus listrik 730 A yangmengalir pada empat buah sampel konfigurasi saluran berbeda terlihat bahwa nilai kerapatan medanmagnet maksimum untuk masing-masing konfigurasi saluran adalah berbeda. Untuk konfigurasi horizontaltunggal kerapatan medan magnetmaksimu adalah 0,00938 mT, sedangkan berturut turut untuk susunankonfigurasi delta, ganda standar, dan ganda dengan perubahan letak fasa pada salah satu sirkuitnya adalahmasing-masing 0,00636 mT, 0,00632 mT dan 0,01173 mT
KEGAGALAN ISOLASI MINYAK TRAFO Dedi Nugroho
MEDIA ELEKTRIKA Vol 3, No 2 (2010): Electrical Engineering
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1705.477 KB) | DOI: 10.26714/me.3.2.2010.%p

Abstract

Insulation of transformer oil has a role as an insulating material of voltage equipment in electrical equipments, but has other uses such as cooling media or extinguish the arc. Purity insulating oil will determine the strength of the dielectric material. On the condition of purity used oil will be contaminated by other subtances mixed in the oil, the result of oil will become impure and degraded dielectric strength that will ultimately reduce the level of insulation failure, isolation and purification of used oil (no pure oil) was able to significantly increase the insulation failure rate of new oil approach.
KENDALI ARUS STARTING MOTOR INDUKSI SATU FASA MENGGUNAKAN MAGNETIC ENERGY RECOVERY SWITCH (MERS) Ken Hasto; Muhammad Haddin; Dedi Nugroho
MEDIA ELEKTRIKA Vol 8, No 2 (2015): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (564.224 KB) | DOI: 10.26714/me.8.2.2015.%p

Abstract

ABSTRACT Control of Electrical Energy at the induction motor starting can be done by adjusting the input Voltage so that the flow generated during the starting of the motor can be arranged magnitude. The purphose of this study was to determine the characteristic Magnetic Energi Recovery Switch(MERS), as the regulator of the input voltage at the time of induction motor starting so that the current can be controlled and can regulated the electrical energy consumed by the motor . The method does is to design the input voltage of the motor control by magnetic energy recovery switch MERS . Aplication MERS as a motor input voltage controller firstly be simulated with PSim Software, The simulated results, as a reference made prototype and tasted its feasibility, criteria feasible and not feasible Mers device can be determined, among others, large capacitance smaller than the capacitance resonance .maximum voltage capacitor is not more than twice the voltage source and has low harmonic impact Results Mers applications as controlling the input voltage at the beginning of starting an induction motor capable of improving lowers the voltage to 108 volts . Keywords : Device Mers, the energy regulator, power factor improvement
REDUKSI HARMONISA DENGAN FILTER AKTIF SHUNT BERBASIS MATLAB/SIMULINK Dani Nur Prabowo; Muhamad Haddin; Dedi Nugroho
MEDIA ELEKTRIKA Vol 8, No 2 (2015): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (606.882 KB) | DOI: 10.26714/me.8.2.2015.%p

Abstract

ABSTRAK Rumah Sakit Roemani Muhammadiyah Semarang memiliki tingkat pemakaian energi listrik yang membutuhkan kwalitas daya listrik yang baik. Tingginya penggunan beban non linier yang diopeasikan dapat menimbulkan harmonisa yang merupakan permasalahan utama dalam kwalitas daya listrk. Harmonisa memiliki dampak buruk dalam sistem tenaga listrik yang menimbulkan kerugian dalam sistem pelayanan konsumen yang salah satunya diakibatkan terjadinya kesalahan pembacaan dan kerusakaan alat ukur yang digunakan. Untuk Mengatasi masalah ini diguakan filter aktif shunt untuk mereduksi nilai dari harmonisa tersebut. Penelitian ini memfokuskan pada metode reduksi harmonisa dengan menggunakan filter aktif shunt. Prinsip kerja dari filter aktif shunt untuk mengkompensasi harmonisa dengan cara menyuntikan arus harmonisa yang fasanya berbeda 1800. Simulasi filter aktif shunt menggunakan software matlab R2013 yang dibuat berdasrkan teori daya aktif-reaktif sesaat (p-q theory) sebagai penghasil arus refrensi untuk kompensasi harmonisa yang sesuai dengan kondisi beban. Arus refrensi tersebut digunakan sebagai sinyal refrensi pembangkit PWM untuk memicu Inverter yang kemudian membangkitakan arus filter yang diijeksikan pada sistem yang dibuat berdasarkan data yang diambil dari sistem kelistrikan MDP Gedung Lama Rumah Sakit Roemani Muhammadiyah Semarang. Hasil menunjukan bahwa penurunan nilai THD arus 1,4 % pada fasa R, 1,51% untuk fasa S, dan fasa T mencapai 1,37%. . Kata Kunci : Harmonisa, THD, IHD, Filter aktif shunt
Analisa Rugi - Rugi Daya Pada Sistem Tegangan Menengah 6,1 KV Di PLTD 3670 KVA PPSDM MIGAS Cepu I’anatullah Ishomudin; Muhamad Haddin; Dedi Nugroho
Jurnal Ilmiah Penelitian Mahasiswa Vol 2, No 1 (2023): Maret 2023
Publisher : Jurnal Ilmiah Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.402 KB)

Abstract

PPSDM Migas Cepu memiliki Kapasitas Total 3670 kVA. Sistem distribusi listrik juga merupakan salah satu yang paling sering terjadi masalah. Salah satunya di PPSDM Migas Cepu, dalam sistem penyaluran daya baik transmisi maupun distribusi, Hal ini terjadi disebabkan adanya beban tak seimbang dan panjangnya saluran distribusi, yang mengakibatkan adanya rugi-rugi daya pada sistem tegangan menengah di PPSDM Migas Cepu, Solusi untuk permasalah tersebut yaitu Sering melakukan tindakan pemeliharan jaringan baik itu secara berkala ataupun accident, agar jaringan tetap handal. Serta perlu adanya evaluasi berkala untuk memastikan semua peralatan masih bekerja dengan baik dan sesuai dengan standarnya. Penelitian ini membahas tentang Analisa Rugi-Rugi Daya Sistem Tegangan menengah 6,1 KV pada PLTD 3670 KVA PPSDM Migas Cepu. Model ditetapkan sebagai single line diagram PPSDM Migas Cepu. Parameter yang ditetapkan pada penelitian ini antara lain : data pembebanan harian, data spesifikasi saluran, dan data jarak antar gardu. Hasil penelitian menunjukkan bahwa Rugi-Rugi Daya PPSDM Migas Cepu diperoleh yaitu Fasa R sebesar 48,4287 KW (1,2754 %) Fasa S 21,156 KW (0,7971 %), dan Fasa T 49,4056 KW (1,2805 %). Berdasarkan Standart PLN No. 72 Tahun 1987, jumlah rugi daya yang diizinkan yakni tidak melebihi 10 %. Sehingga dapat disimpulkan bahwa sistem di PPSDM Migas Cepu masih aman. Kata Kunci: rugi daya, distribusi, tegangan menengah.
Desain Pembangkit Listrik Tenaga Mikrohidro di Air Terjun Kedung Kayang Dedi Nugroho; Agus Suprajitno; Gunawan Gunawan
Jurnal Rekayasa Elektrika Vol 13, No 3 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5011.831 KB) | DOI: 10.17529/jre.v13i3.8554

Abstract

Kedung Kayang waterfall is located on the border of  Magelang and Boyolali regency of Central Java.  The waterfall is 38 meters high, so it has the potential to be used as a micro hydro power plant (MHP). In designing the MHP, it requires some studies including hydrology, civil, mechanical, and electrical. The purpose of this research is to predict the water discharge, determine the potential of hydro power, selection of MHP sites, design of hydro turbine and electric generator. This research uses Penman Modification method to calculate evapotranspiration, Mock method to calculate water discharge, geographical mapping for MHP sites selection and cross-flow turbine design calculation. This paper presents the results of MHP design consist of MHP capacity, selection of MHP sites, penstock design, cross-flow turbine design and electric generator selection.   The  result showed that  dependable water discharge is 0.143 m3 / sec, effective head is 19.5 meters, hydro potential is 27.33 kW, and electric power that can be produced is 18 kW, length and diameter penstock are 81,74 m and 26,77 m, hydro turbine used cross flow type with outer diameter of the runner is 17,17 cm,  inner diameter is 11,45 cm and width is 59,16 cm. MHP site is located in Klakah village,  Selo Sub-district, Boyolali District.  
Desain Pembangkit Listrik Tenaga Mikrohidro di Air Terjun Kedung Kayang Dedi Nugroho; Agus Suprajitno; Gunawan Gunawan
Jurnal Rekayasa Elektrika Vol 13, No 3 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v13i3.8554

Abstract

Kedung Kayang waterfall is located on the border of  Magelang and Boyolali regency of Central Java.  The waterfall is 38 meters high, so it has the potential to be used as a micro hydro power plant (MHP). In designing the MHP, it requires some studies including hydrology, civil, mechanical, and electrical. The purpose of this research is to predict the water discharge, determine the potential of hydro power, selection of MHP sites, design of hydro turbine and electric generator. This research uses Penman Modification method to calculate evapotranspiration, Mock method to calculate water discharge, geographical mapping for MHP sites selection and cross-flow turbine design calculation. This paper presents the results of MHP design consist of MHP capacity, selection of MHP sites, penstock design, cross-flow turbine design and electric generator selection.   The  result showed that  dependable water discharge is 0.143 m3 / sec, effective head is 19.5 meters, hydro potential is 27.33 kW, and electric power that can be produced is 18 kW, length and diameter penstock are 81,74 m and 26,77 m, hydro turbine used cross flow type with outer diameter of the runner is 17,17 cm,  inner diameter is 11,45 cm and width is 59,16 cm. MHP site is located in Klakah village,  Selo Sub-district, Boyolali District.  
Evaluasi Kualitas Informasi Obat Pada Brosur Obat Nopratilova; Eksanti Indriani Sabila; Dedi Nugroho; Rizky Farmasita Budiastuti; Alhara Yuwanda; Anugerah Budipratama Adina
Jurnal Sains Farmasi Dan Kesehatan Vol. 2 No. 1 (2024): Mei - Agustus
Publisher : CV. ITTC INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62379/jfkes.v2i1.1527

Abstract

The research aims to describe the information in drug brochures. Classification of drug brochures: categorization of drugs based on labeling, name, product origin and therapeutic class. The study also assesses the completeness of information in drug brochures, following Indonesian Ministry of Health regulations (Number: 386/MENKES/SK/IV/1994), Indonesian National Agency of Drug and Food Control (BPOM) regulations (Number 2 of 2021) and WHO Ethical Criteria for Medicinal Drug Promotion in 1988. This descriptive study uses simple random sampling with a sample size of 30 drug brochures. Research findings for drug brochures: Classification of drugs based on labeling shows that 33.3% are over-the-counter drugs, 46.7% are prescription-only drugs and 20.0% are classified as hard drugs. Based on the name, 100.0% are branded drugs. The product origin reveals that 100.0% are domestically manufactured drugs. The most common therapeutic class is Analgesics & Antipyretics is 20.0%. The completeness of information in drug brochures according to the criteria specified in Indonesian Ministry of Health regulations (Number: 386/MENKES/SK/IV/1994) is 50.0%, for BPOM regulations (Number 2 of 2021) is 20.0% and for WHO Ethical Criteria for Medicinal Drug Promotion in 1988 is 20.0%.
Perancangan dan Simulasi Sistem Purging Otomatis pada Sample Probe CEMS di PLTGU PT Jawa Satu Power Akhmad Rizkya; Dedi Nugroho
Elkom: Jurnal Elektronika dan Komputer Vol. 18 No. 1 (2025): Juli : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/elkom.v18i1.2987

Abstract

Improving the accuracy of emission monitoring in the Continuous Emission Monitoring System (CEMS) is crucial to support compliance with environmental regulations, especially in gas and steam-based power plants (PLTGU). At PT Jawa Satu Power's PLTGU, the purging system on the CEMS sample probe is still performed manually and limited to scheduled preventive maintenance, potentially reducing emission data reliability due to particle contamination. This study aims to design and simulate an automatic purging system based on a Programmable Logic Controller (PLC), taking into account technical parameters such as timer, gas pressure, temperature, and sample flow rate. The system design was carried out through the modeling of automatic control logic using CX-Programmer software, with a protection approach based on real-time conditions and timing. The design results show that the automatic purging system can improve cleaning consistency, reduce the risk of contamination, and enhance the integrity of emission monitoring data. This study is expected to serve as a foundation for developing a more applicable and integrated automated purging system for CEMS in the future.
Co-Authors Agus Suprajitno Akhmad Rizkya Anugerah Budipratama Adina Dani Nur Prabowo Eksanti Indriani Sabila Farmasita Budiastuti, Rizky Gunawan Gunawan I’anatullah Ishomudin Ken Hasto Muhamad Haddin Nopratilova Nopratilova yuwanda, alhara alhara