Analisis Aliran Daya dan Kestabilan Transien Sistem Hibrida PV-BESS-Diesel Generator pada Platform REIDI ITS

Azis, Asyrafil Nur Azis (2025) Analisis Aliran Daya dan Kestabilan Transien Sistem Hibrida PV-BESS-Diesel Generator pada Platform REIDI ITS. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Krisis energi fosil dan meningkatnya emisi gas rumah kaca mendorong pemanfaatan energi baru terbarukan (EBT) dalam sistem pembangkit listrik tenaga hibrida (PLTH). Living Laboratory REIDI menjadi wadah riset dan implementasi integrasi berbagai sumber EBT seperti photovoltaic (PV), Engine Diesel Generator (EDG), dan Battery Energy Storage System (BESS). Penelitian ini bertujuan untuk menganalisis kestabilan transien, respon tegangan dan frekuensi, serta merancang pola operasi optimal sistem off-grid REIDI menggunakan software power system simulation. Simulasi dilakukan berdasarkan skenario gangguan, seperti penurunan iradiasi hingga 40% dan perubahan beban sebesar 50%. Hasil menunjukkan bahwa sistem tetap stabil ketika EDG atau BESS difungsikan sebagai grid forming, dengan sumber lainnya beroperasi sebagai grid following. Frekuensi berada dalam batas aman operasi, yaitu 49,58–50,42 Hz. Sedangkan tegangan bus sistem berkisar antara 98–100% dari tegangan nominal dan masih memenuhi batas toleransi standar tegangan di bawah 20 kV (+5%) dan ( -10%). Pola pengoperasian yang andal dapat dirancang dengan menetapkan BESS sebagai swing untuk merespon gangguan jangka pendek karena kecepatannya dalam menstabilkan sistem, sedangkan EDG cocok digunakan sebagai swing untuk suplai beban dasar atau saat PV tidak beroperasi optimal. Integrasi sistem off-grid ini membutuhkan desain pengoperasian yang andal agar mampu menjaga kestabilan. Untuk menjamin performa sistem secara berkelanjutan, terutama dalam fluktuasi besar, disarankan pengoperasian on-grid sebagai sumber cadangan.
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The fossil energy crisis and the rising greenhouse gas emissions have accelerated the adoption of renewable energy sources in hybrid power generation systems. The REIDI Living Laboratory serves as a platform for research and implementation of integrated renewable energy sources such as photovoltaic (PV), Engine Diesel Generator (EDG), and Battery Energy Storage System (BESS). This study aims to analyze transient stability, voltage and frequency responses, and to design an optimal operational strategy for the REIDI off-grid system using power system simulation software. Simulations were conducted under disturbance scenarios, including a solar irradiance reduction of up to 40% and a load variation of 50%. The results indicate that the system remains stable when either EDG or BESS functions as the grid-forming unit, while the other sources operate in grid-following mode. The system frequency remains within the acceptable range of 49.58–50.42 Hz. The bus voltage stays between 98% and 100% of its nominal value, which complies with the standard voltage tolerance for systems below 20 kV (+5%) and (–10%). A reliable operation strategy can be achieved by assigning BESS as the swing unit for short-term disturbances due to its rapid response, while EDG is more suitable for base load supply or during low PV output. To ensure system resilience, particularly under major fluctuations, an on-grid backup source is recommended.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	REIDI, Transient Stability, Photovoltaic, Engine Diesel Generator (EDG), Battery Energy Storage System (BESS)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1087 Photovoltaic power generation T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2943 Battery chargers. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Asyrafil Nur Azis
Date Deposited:	24 Jul 2025 09:17
Last Modified:	24 Jul 2025 09:17
URI:	http://repository.its.ac.id/id/eprint/121348

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