Muhtadi, M Zaky Zaim (2023) Pengoperasian Diesel Generator pada Kecepatan Variabel Menggunakan Algoritma Adaptive Inertia Weight Particle Swarm Optimization untuk Penghematan Konsumsi Bahan Bakar. Doctoral thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Genset diesel merupakan pembangkit listrik yang handal, namun membutuhkan biaya operasional yang cukup tinggi, terutama untuk bahan bakar. Penelitian ini menjelaskan teknik untuk mengurangi konsumsi bahan bakar pada sistem Diesel Engine Wound Rotor Synchronous Generator. Sistem Variable Speed Diesel Wound Rotor Synchronous Generator (VSD-WRSG) diusulkan pada penelitian ini sebagai solusi untuk menghasilkan penghematan bahan bakar. Pembangkit listrik ini merupakan Constant Speed Diesel Wound Rotor Synchronous Generator (CSD-WRSG) yang dilengkapi dengan konverter elektronika daya AC/DC/AC. Penelitian ini menyajikan pemodelan dan optimasi kecepatan mesin diesel generator kecepatan variabel, serta kontrol frekuensi, tegangan dan arus keluaran dari konverter elektronika daya yang menuju beban. MatLab/Simulink digunakan sebagai software untuk memvalidasi model dan optimasi yang diusulkan. Sistem yang diteliti merupakan sistem mandiri dengan kapasitas 880 kW dan kebutuhan beban rata-rata kurang dari 40% kapasitas pembangkit dalam operasi kegiatan kilang. Penelitian ini memberikan perhatian khusus pada pengembangan metode kontrol kecepatan putaran sistem VSD-WRSG terhadap daya beban yang dilayani. Pendekatan kontrol kecepatan putaran yang digunakan mempertimbangkan kurva Specific Fuels Consumption (SFC) mesin. Kurva ini menggambarkan hubungan antara torsi, kecepatan putaran mesin, laju aliran bahan bakar dan daya. Penelitian ini difokuskan untuk memberikan dua konstribusi sebagai luaran penelitian. Pertama, desain model kontrol putaran mesin diesel menyesuaikan kebutuhan beban sehingga konsumsi bahan bakar dapat minimal. Kedua, desain model konverter AC-ke-DC menggunakan penyearah vienna dengan kontrol hysteresis dikarenakan kesederhanaan dan stabilitas yang baik. Konverter DC-ke-AC menggunakan inverter dengan kontrol sinusoidal pulse width modulation (SPWM) dikarenakan kemudahan dalam implementasinya. Algoritma Adaptive Inertia Weight Particle Swarm Optimization (AIWPSO) digunakan untuk meminimalkan penggunaan bahan bakar menyesuaikan data Spesific Fuel Consumption (SFC). Hasil simulasi menunjukkan bahwa model yang diusulkan cukup efektif. Ketika menggunakan data beban harian, model VSD-WRSG dapat menghemat hingga 107 liter (4.7%) bahan bakar per hari jika dibandingkan dengan CSD-WRSG. Sedangkan dengan penggunaan algoritma AIWPSO didapatkan penghematan penggunaan bahan bakar pada model VSD-WRSG sebanyak 15 liter (0.9%) per hari. Konverter AC/DC/AC juga mampu melayani beban dengan baik.
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The diesel generator is a reliable power plant but requires quite high operational costs, especially for fuel. This research describes techniques to reduce fuel consumption in the Diesel Engine Wound Rotor Synchronous Generator system. The Variable Speed Diesel Wound Rotor Synchronous Generator (VSD-WRSG) system is proposed in this research as a solution to produce fuel savings. This power plant is a Constant Speed Diesel Wound Rotor Synchronous Generator (CSD-WRSG) which is equipped with an AC/DC/AC power electronics converter. This research presents the modeling and optimization of variable speed diesel generator engine speed, as well as the control of frequency, voltage, and output current from the power electronics converter to the load. MatLab/Simulink is used as a software to validate the proposed model and optimization. The system under study is a standalone system with a capacity of 880 kW and an average load requirement of less than 40% of the generating capacity in the operation of refinery activities. This research pays special attention to the development of a rotation speed control method for the VSD-WRSG system against the load power being served The speed control method utilized takes into consideration the Specific Fuel Consumption (SFC) curve of the engine. This curve represents the relationship between torque, rotation speed, fuel flow, and power. This research focuses on providing two contributions. First, the design of the diesel engine rotation control model adapts to the load requirements to minimize fuel consumption. Second, the design of the AC-to-DC converter model uses a Vienna rectifier with hysteresis control because of its simplicity and good stability. DC-to-AC converters use inverters with sinusoidal pulse width modulation (SPWM) control due to its ease of implementation. The Adaptive Inertia Weight Particle Swarm Optimization (AIWPSO) algorithm is used to minimize fuel use according to the Specific Fuel Consumption (SFC) data. The simulation results confirm the effectiveness of the proposed model. When using daily load data, the VSD-WRSG model can save up to 107 liters (4.7%) of fuel per day when compared to the CSD-WRSG. Meanwhile, by using the AIWPSO algorithm, fuel consumption savings on the VSD-WRSG model were obtained by 15 liters (0.9%) per day. The AC/DC/AC converter is also able to serve the load well.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | AC/DC/AC converter system, fuel minimization, Variable Speed Diesel Generator, konverter AC/DC/AC, minimisasi bahan bakar |
| Subjects: | T Technology > T Technology (General) > T57.62 Simulation T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1007 Electric power systems control T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1322.6 Electric power-plants |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20001-(S3) PhD Thesis |
| Depositing User: | M.Zaky Zaim Muhtadi |
| Date Deposited: | 05 Sep 2023 07:09 |
| Last Modified: | 05 Sep 2023 07:09 |
| URI: | http://repository.its.ac.id/id/eprint/104606 |
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