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All Journal International Journal of Electrical and Computer Engineering ASEAN Journal of Systems Engineering MEDIA ELEKTRIKA Majalah Ilmiah Teknologi Elektro TEKNIK Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Pengembangan Energi Nuklir TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) PROSIDING CSGTEIS 2013 Jurnal Teknologi JURNAL NASIONAL TEKNIK ELEKTRO JTET (Jurnal Teknik Elektro Terapan) JTERA (Jurnal Teknologi Rekayasa) Communications in Science and Technology IJITEE (International Journal of Information Technology and Electrical Engineering) Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Jurnal Nasional Teknik Elektro dan Teknologi Informasi Journal FORTEI-JEERI Majalah Ilmiah Teknologi Elektro

Sarjiya

Departemen Teknik Elektro Dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Author-ID : 2374281

Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

Published : 44 Documents Claim Missing Document

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Combined heat and power - optimal power flow based on thermodynamic model with associated petroleum and wet gas utilization constraints Priambudi Pujihatma; Sasongko Pramono Hadi; Sarjiya Sarjiya; Tri Agung Rohmat
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 1: February 2019
Publisher : Institute of Advanced Engineering and Science

Oil fields produce associated petroleum and wet gas, which can be mixed with commercial natural gas as fuel. Associated petroleum and wet gas are a low cost, low quality fuel, whereas commercial natural gas is the opposite. Two parameters are affected by this mixture: the fuel cost and the power – steam output of gas turbine – heat recovery steam generators. This research develops a Unit Commitment and Optimal Power Flow model based on Mixed Integer Nonlinear Programming to optimize combined heat and power cost by considering the optimal mixture between associated petroleum - wet gas and commercial natural gas. A thermodynamic model is used to represent the performance of gas turbine – heat recovery steam generators when subjected to different fuel mixtures. The results show that the proposed model can optimize cost by determining the most efficient power – steam dispatch and optimal fuel mixture. Furthermore, the optimization model can analyse the trade-off between power system losses, steam demand and associated - wet gas utilization.

Maximum Power Point Tracking using Particle Swarm Optimization Algorithm for Hybrid Wind-Tidal Harvesting System on the South Coast of Java Fransisco Danang Wijaya; Kukuh Daud Pribadi; Sarjiya Sarjiya
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 2: April 2017
Publisher : Institute of Advanced Engineering and Science

This paper proposes a hybrid wind-tidal harvesting system (HWTHS). To extract maximum power from the wind and tidal, HWTHS implements particle swarm optimization (PSO) algorithm in maximum power point tracking (MPPT) method. The proposed HWTHS had been tested on the range of possible input appropriate to the characteristics of the southern coast of Java. The presented result shows that by using PSO-based MPPT algorithm, maximum power point can be achieved. Thus the efficiency of HWTHS is 92 %, 94 % in wind section and 91 % in tidal section. By using PSO-based MPPT, HWTHS can respond well to changes in wind and tidal speed, whether it's a change from low speed to a higher speed or change from high speed to lower speed wherein time to reach new steady state is ± 0.1 s. At varied wind and tidal speed, PSO algorithm can maintain Cp of the system in the range of 0.47 - 0.48 so that power can be extracted to the maximum.

Optimizing Tri-Core Permanent-Magnet-Linear-Generator Direct-Drive Wave-Energy-Conversion System Design for Sea Wave Characteristics in South Coast Yogyakarta Fransisco Danang Wijaya; Sarjiya Sarjiya; Muhammad Rifa'i Putra Sugita
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 2: April 2017
Publisher : Institute of Advanced Engineering and Science

According to statistical data, the south coast Yogyakarta has significant ocean wave height which can be used to generate electricity by using wave-energy-converter system. One of the simplest way to convert wave energy to electricity is using direct-drive wave-energy-conversion (WEC) system with permanent-magnet-linear-generator (PMLG). This method is simple because it doesn’t need to convert linear motion to rotational motion. However, PMLG has large electric power losses, has great weight in both of the stator and rotor, and expensive to make. In this paper, a tri-core PMLG was designed. The electric power losses in the winding, translator weight, and manufacturing cost were ideally minimized using multiobjective optimization combined with simulated annealing (SA) algorithm. Then, the design was verified using finite element analysis. The optimized design of this PMLG was simulated using sinusoidal ocean waves which usually occur in the south coast of Yogyakarta to analyze the performance of this linear generator. Simulation result has been shown that this generator can generate 911 watt peak output power at the rated condition and at the optimum load with 81.14% efficiency. This confirms that the optimized design of PMLG is suitable for direct-drive WEC with low power losses and manufacturing cost.

Co-Authors Abdul Syakur Adlan Bagus Pradana Alan Abdu Robbi Afifi Alfi Bahar Ambar Pertiwiningrum Ambariyanto Ambariyanto Amrisal Kamal Fajri Angga Cahya Putra Avrin Nur Widiastuti Christina Purwaningsih Cuk Supriyadi Ali Nandar Daniar Rizki Wijayanti Diah Yuniarti Dian Budhi Santoso Eko Tri Prastyo Eko Yudo Pramono Fajar Prasetia Fatana, Ahmad Fransisco Danang Wijaya Galih Yudhaprawira Gessa Firman Febrian Hamzah Berahim Hamzah Berahim Hamzah Berahim Haneef Nouval Alannibras Humaidi Hatta Imaduddien Wiennetou Hazel Ariantara Hermawan, Hermawan Husni Rois Ali I Ketut Suada Ika Novia Ika Novia A Indra Triwibowo Izzuddin Fathin Azhar Kukuh Arung Pinanditho Kukuh Daud Pribadi Kurniawan, Jaya Lesnanto Multa Putranto Lukas Joko Dwiatmanto, Lukas Joko Mokhammad Isnaeni Bambang Setyonegoro Muhammad Bhayu Bramantyo Muhammad Rifa'i Putra Sugita Muhammad Yasirroni Musthafa Abdur Rosyied Pinanditho, Kukuh Arung Prabowo, Muhaimin Muchti Prasetia, Fajar Prasetyo, Pandhu Ardi Prastyo, Eko Tri Priambudi Pujihatma Qiangqiang Xie Rian Fatah M. Rizki Firmansyah Setya Budi Rizki Firmansyah Setya Budi Rochmadi Rochmadi Sabhan Kanata Sasongko Pramono Hadi Suhono Suhono T. Haryono T. Haryono - Tri Agung Rohmat Tumiran Wiennetou, Hatta Imaduddien Wijayanti, Daniar Rizki Winarko AP Winasis Winasis Wiwik Handajadi, Wiwik Yassir - Yassir Yassir Yudhaprawira, Galih Yusuf Susilo Wijoyo Zainal Abidin

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