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Journal : Mestro

Optimizing Production of Kwh Legon PLTD PLTD Using Wind Turbine Generator Model B. Ventus 250 KW(Case Study on Karimunjawa Island) Safrizal, Safrizal; Sutikno, Ery; Arifin, Zaenal
Mestro: Jurnal Teknik Mesin dan Elektro Vol 5 No 1 (2023): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v5i1.407

Abstract

Electricity supply must be able to reach all users, including those on small islands in Indonesia, one of which is Karimunjawa Island. Starting in 2016 Karimunjawa Island is supplied by 2 units of Legon Bajak Diesel Power Plant (PLTD) with a capacity of 2x2.2 MW. Based on the peak electricity demand on Karimunjawa Island, each month from January 2017 to December 2018 increased by about 3.9% with an hourly peak load of 1,146 kWh. The average consumption of PLTD Legon Bajak every month in 2018 is 194,877 liters / month. The higher the kWh production of a PLTD, the higher the operational costs for fuel. In addition to the high price of fuel, combustion results from PLTD operations also cause air pollution. Based on these problems in this study will analyze the optimization of the kWh Legon Bajak PLTD using a wind turbine generator model b.ventus 250 kW of 3 units with an assumption of 50% of the peak load, because on Karimunjawa Island has a high enough wind energy potential. The average wind speed from 2004 to 2015 in several areas of Karimunjawa Island was 5.7 m / s. In this study will calculate technical analysis and economic analysis. In the technical analysis the wind turbine generator power output is calculated using the weibull method based on wind speed and power curve b.ventus 250 kW while the economic analysis calculates the cost of fuel savings that can be achieved after optimization calculations. Calculation results show wind turbine power output of 990,981 kWh / year. Based on the specific value of fuel consumption (SFC) of 0.432 liters / kWh fuel consumption during 2017 amounted to 1,605,453.9 liters / year while for 2018 it was 2,338,528.1 liters / year. From the 3 wind turbine electricity supply of 2,972,943 kWh / year, it will reduce fuel consumption by 1,284,311.4 liters / year with a saving cost of Rp.15,989,291,338.00. The amount of optimization of the kWh PLTD after the supply of 3 units of b.ventus 250 kW wind turbine model in 2017 was 80% while in 2018 it was 54.9%.
Comparative Analysis of DOL Starting Method with VFD on 630 kW/3 kV SWRO PUMP Induction Motor Safrizal, Safrizal
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 03 (2024): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i03.587

Abstract

Operational starting current of an induction motor can reach 5-7 times the nominal current (FLA) in steady state conditions. This is due to the small impedance and high Locked Rotor Current (LRC). During starting, the terminal voltage experiences a voltage drop with a duration of 0.5 cycles to 1 minute, known as voltage dip or voltage sag. High current will generate heat that can damage the motor itself, cause voltage drop in an electrical power system, and if the voltage drop exceeds the allowed tolerance, it can disrupt other systems. To determine the starting current of a 630 kW/3 kV induction motor, a simulation can be performed using the ETAP Power Station software. From the simulation results, the starting motor SWRO Pump using the DOL method had a current surge of 440% (4.4 times) of the FLA (Full Load Ampere) 726 A, resulting in a voltage drop of 6%, while the VFD (Variable Frequency Drive) method had a current surge of 110% of the FLA (Full Load Ampere) 181.5 A with a voltage drop of 0.2%. Both methods experienced similar voltage drops within the acceptable limit (<20%), but had different current surges. The research concluded that VFD is safer because high starting current can cause interference with other equipment and affect the life of the motor's windings. The choice of starting method should be appropriate for the specific application.
Evaluasi Indeks Konsumsi Energi Listrik di Rumah Sakit Daerah Umum R.A. Kartini Jepara Kurniawan, Samuel; Safrizal, Safrizal; Arifin, Zaenal
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.678

Abstract

This study aims to evaluate the electrical energy consumption index at the R.A. Kartini Regional General Hospital (RSUD Jepara). Electrical energy efficiency is a crucial aspect in the management of modern health facilities, especially in efforts to reduce operational costs and environmental impacts. Hospitals as facilities that operate 24 hours have high energy consumption, especially for medical equipment, air conditioning systems, and lighting. This study uses a quantitative descriptive analysis method by processing electricity consumption data in 2018 obtained from official hospital documents. The results showed that the total installed power at the R.A. Kartini Regional General Hospital Jepara reached 1,410,005 VA, with the largest distribution of energy use in medical devices (51.5%), air conditioning systems (38.7%), and mechanical equipment (20.7%) The hospital's Energy Consumption Index (IKE) was calculated at 146 kWh/m²/year, which is included in the "fairly efficient" category according to Indonesian national standards (180-280 kWh/m²/year). However, there is still room for increased efficiency, especially in air conditioning and lighting systems. The research findings show that the application of inverter technology in the AC system, replacing conventional lamps with LEDs, and optimizing the use of mechanical equipment can result in energy savings of up to 25-30%. This study recommends the implementation of a comprehensive energy management system, including periodic energy audits, increasing equipment efficiency, and educating staff about energy-saving practices. With these steps, RSUD R.A. Kartini Jepara can achieve the IKE target of 102-110 kWh/m²/year, approaching international best practices. In addition, this study also provides an important contribution to energy conservation efforts in the health sector, especially in supporting national and global policies on energy sustainability
Co-Authors . Zulfan A.G, Rosnina Abd, Misswar Achiraini, Oktasa Dewi adhar, Deni Adhar, Deni Adhar Adi Kurniawan , Turkhamun Aditya, Fadhila Afrida, Siti Agoes Dariyo Agung Priambodo Agustia, Sindi Ahmad Helman Hamdani, Ahmad Helman Alamsyah, T. Alamsyah, Teuku Amelia Amelia Aminuyati Amna, Eka Yunita Amrizal Amrizal Anastasha, Desty Ayu Andariyani, Ira Meike Andi Riansyah Andiny, Puti Angraini, Sri Aniska, Tiara Anwar, Sufyan Aqsal, Maulida Ariadi, Yudhi Arifin, Zahida Hasnul Arinda, Dela Arini Arini Arista Muhartanto, Arista Ayu Anatasha, Desti Ayuning, Dwi Azmal, Azmal Azwir Nasir Baehaqi Bagus Setiawan Bagus, Fajrian Basriwijaya, Kiagus Muhammad Zain Berasa, Tuti Depi Bob Subhan Riza, Bob Subhan Br Sembiring, Indah Br Sembiring, Latifah Hanum Budi Setiawan Budiadyana, Gusti Nyoman Candra Setiawan Dadan Suryana Darmawan Darmawan Darmayanti, Osaria Desiana Desmiyawati Desmiyawati, Desmiyawati Dewi Martha Dewi Martha, Dewi Martha Dewi Rosa Indah, Dewi Rosa Dewi, Putri Ayu Prima Dhafir, Muhammad Din, Misbahud Dora Darussalam, Dora Duana, Maiza Dulfajri, Dulfajri Elita, Anggun Dian Elviana Elviana, Elviana Ernawati Ernawati Eva Darnila Facharurrazi, Sayed Fadhilah Fadhilah Fadillah, Mardi Fadriati Fadriati Fahlevi, Muhammad Iqbal Fairus, Fairus Faisal Faisal Fakhrurradhi Luthfi Farianda, Annisa Fathurrahman Fathurrahman fatimah Fatimah Fauza, M. Anta Febry Ananda, Nurul Fera, Dian Fifani, Nur Astri Firman Firdauz Saputra Fitria, Asella Fitriani Fitriani Fitriani Fitriani, Neiliel Fitriya, Nur Fridayanti, Nelly Fuzari, Rajul Fuzari, Razul Ginting, Ina Febria Ginting, Sihevani Gusnafitri, Gusnafitri Gusrianti, Nisa Hadiyan Wijaksana, Haris Hafifah, Hafifah Handayani, Rd Selvy Handayani, Rd.Selvy Hapsari, Jenny Putri Hapsari Hariadi Hariadi Hasrah Junaidi, Hasrah Hawari, Atika Hendrival Hendrival Heni Sugesti, Heni Sugesti Herdi Susanto Herlina Dimiati, Herlina Herri Mahyar Hidayat, Rahmadani Hidayatullah Ismail, Hidayatullah Husna, Naimatul Husnani, Husnani Husnul Fitri, Maghfiratul Ichsan Ichsan Ichsan Ikhtiari, Arina Ilham, Dimas Inayatillah, Aufa Indah Permata Sari indra, siti balqies Ira Meike Andariyani, Ira Meike Andariyani Irawan, Mulia Dwi Nurul Islahuddin, Islahuddin Ismadi Ismadi Isnaini, Teuku Isyfa Fuhrotun Nadhifah JA, Sudarma Jamidi, Jamidi Jannar, Miftahul Jeffri, Ary Juli Iriani, Juli Julianti, Safitri Jumiarti, Desri Kamarullah Kamarullah Khaidir Khaidir Khaidir Khaidir, Khaidir Khasanah, Shokhihatun Khatami, Muhammad Reza Komalasari, Elis Kristi Agust, Kristi Kurniawan, Erizal Kurniawan, Samuel Kusuma, Tahta Rias Tika C Kusumawardani, Eva Flourentina Laila Nazirah Lasari, Yufi Latmini Lathifah Alfat, Lathifah Latifa, Putri Dwi Latifah Latifah Libraniati, Ringga Lili Fauzielly Lili Tanti, Lili Lingga, Nurainun LUKMAN, LUKMAN M. M. Fadli M. Sagaf Mahdaliana, Mahdaliana Mahmuddin Mahmuddin Mahyu Maimun Maimun Maisari, Ayu Mardiawati, Mardiawati Masril Masril Maulana Arafat Lubis Maulana, Arif Arya Maulana, Fajar Mauliza, Rifkah Mayarani, Selpi Mayarni Mayarni Melfadila, Melfadila Menhard, Menhard Meta Suriyani, Meta Meutia Dewi, Meutia Movitaria, Mega Adyna Muetia, Rahmi Muhamad Fuad, Muhamad Muhamad Yusuf, SE., M.Si. Muhammad Fuad Muhammad Idkham muhammad irfan muhammad rizky, muhammad Muhammad Salman Muhammad Salman Muhammad Wahyu, Muhammad Muhammad Wali, Muhammad Muhammad Yusuf Muliana, Muliana Mulkan, Andi Murni, Cici Dewi Sari Muslimsyah, Muslimsyah Musran, Musran Mustafid Mutiara, Siti Nabela, Danvil Nabila, Nabila Nabilla Nabilla Nabilla, Ulya Nafitri SA, Desi Nanda Nanda Nashran Azizan Nasihin, Ihsan Nasruddin Nasruddin Nate, Tajuk Tangke Nazimah Nazimah Nelita, Nelfi Nilahayati Ningrum, Kristina Ayu Noor, Mohd   Zairul Mohd Nora Sovira, Nora Novandri, Andri Noventri, Tasya Rizky Novira Fazri Nanda, Novira Fazri Nanda Nst., Nadila Febriyanti Nunsina, Nunsina Nur Istiqomah Nur Qorimah, Esti Nuraimah, Nuraimah Nurdin, Ambia Nurdin, Muhammad Yusuf Nurhayati Nurjani Nurlina Nurlina Nusyirwan Nusyirwan Oktavia, Rahmi Olivia, Sonia Rida Patricia, Nabila Perry Boy Chandra Siahaan Pitri Yandri Puji Rahayu, Puji Rahayu Purwanti, Yuniasih Putra, Irwan Putri, Desyana Putri, Dian Amanah Putri, Nabilla Eka Putri, Novalya Irma Putri, Oriza Satifa Putri, Regina R. Rusli Rabiah Adawiyah, Rabiah Raden Mohamad Herdian Bhakti Radika, Radika Rafli, Muhammad Rahma Yunita, Rahma rahmadani, novreza Rahman, Maulana Rahmawati, Fazilah Rahmi Meutia, Rahmi Ramadhani, Novi Sandi Rasmon Ratna Sari, Bunga Rd. Selvy Handayani Resssi, Rina Reynaldi, Fitrah Rinaldy Rinaldy Rini Mastuti Riny Chandra Rizal Munadi Rizal, Yani Rizki Firmansyah Rohman , Dwi Ryan Aswanda Taufiqqur Rosmaiti, Rosmaiti Rozalina, Rozalina Rozalina RR. Ella Evrita Hestiandari Safari, Arief Safmila, Yuliani Safuridar Salawa, Salsabil Sandi, Mei Ryan Sanusi Sanusi Sapriani, Wiwita Saputra, Rahmat Saragih, Negi Prianda Sari, Mita Purnama Sari, Riezky Purnama Saripin, Saripin Saripin, Saripin Sayed Fachrurrazi Septatia, Yuni Sinta Simahbengi, Cut Siregar, Eka Pratika Duri SISKA JUNITA Siti Maisyaroh Fitri Siregar Sitinjak, Marnala Soraya, Andini Sovia, Dela Sumadikarta , Istiqomah SUMIYATI SUMIYATI SURI AMILIA, SURI Suryani Suryani Susianto Susianto Sutarti, Tatik Sutikno, Ery Syafria, Muhammad Teddy Syafriandi Syafriandi Syafruddin Haris, Syafruddin Syahrianursaifi, Syahrianursaifi Syarifah Ulya, Syarifah Ulya Tambun, Muhammad Yunus Tanjung, Angga F. Tengku Putri Lindung Bulan, Tengku Putri Lindung Teuku Zulfadli Teungku Nih Farisni Tristiana, Eni Triwerdhana, Afriadhi Ujang Nurjaman, Ujang Ulfiah, Ulfiah Usnawiyah, Usnawiyah Verinanda, Muhammad Ridwan Wibowo, Gentur Wahyu Nyipto Wintah WIRDAYANI WAHAB, WIRDAYANI Wirdayani Wahab, Wirdayani Wahab Wirhan Fahrozi, Wirhan Yanti Budiasih, Yanti Yarmaliza Yogi Chandra, Yogi Chandra Yulia, Resti Yurni, Irma Yusmanizar Yusmanizar Yuwaldi Away Zaenal Arifin Zahida, Zahida Zahro, Amalia Zainuddin Harahap Zakiyuddin, Zakiyuddin Zanra, Sri Wahyuni Ziaul Maula, Ziaul Zichri, Zichri Zubir, Zubir Zulfiani Zulfiani Zulheri Is Zulhilmi, Zulhilmi Zuliati, Septiarini Zulkhairi Sofyan Zurrahmi Wirda