Ananda, Yoshiko Ricky (2023) Analisis Stabilitas Sinyal Kecil dari Kontrol Inersia Virtual dan Kontrol Redaman Virtual pada Sistem Baterai Penyimpan Energi berbasis Analisis Modal. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penetrasi dari photovoltaic memberikan permasalahan stabilitas sistem akibat intermittency dan uncertainty pada pembangkit energi baru dan terbarukan. Selain itu pembangkit berbasis inverter dapat mengakibatkan pengurangan nilai inersia dan redaman pada sistem. Berkurangnya nilai inersia dan redaman pada sistem mengakibatkan nilai RoCoF menjadi semakin meningkat, dimana hal tersebut dapat mengganggu kestabilan frekuensi sistem apabila terjadi gangguan kecil. Untuk mengatasi permasalahan stabilitas sistem tersebut diperlukan battery energy storage system (BESS) dengan menggunakan kontrol tambahan berupa kontrol inersia virtual dan kontrol redaman virtual agar dapat membantu memberikan daya tambahan ke sistem. Oleh karena itu pada Tesis ini dilakukan investigasi efek dari pemasangan dan perubahan nilai konstanta inersia pada kontrol inersia virtual dan konstanta redaman pada kontrol redaman virtual berbasis sistem baterai penyimpan energi terhadap stabilitas sinyal kecil menggunakan analisis modal karena cukup efektif dalam mengidentifikasi penyebab sistem mengalami osilasi atau deviasi. Pengujian menggunakan sistem IEEE 9 bus dengan mempertimbangkan kontrol generator seperti governor, automatic voltage regulator (AVR), dan power system stabilizer (PSS). Dari hasil analisis tersebut didapatkan bahwa photovoltaic mengakibatkan peningkatan nilai comprehensive damping index (CDI) dan eigenvalue mengalami pergeseran menuju unstable area. Sehingga mengakibatkan deviasi frekuensi dan nilai RoCoF mengalami peningkatan. Peningkatan nilai konstanta inersia virtual dan nilai konstanta redaman virtual mampu memberikan pergerakan eigenvalue pada mode intraplant semakin bergerak menuju unstable area sedangkan mode local area semakin bergerak menjauhi unstable area dan pada suatu nilai akan berputar arah mendekati unstable area. Hal tersebut ditunjukkan dari nilai CDI yang menurun, namun nilai konstanta yang terlalu tinggi juga mengakibatkan nilai CDI menjadi meningkat. Penggunaan kontrol inersia virtual dan kontrol redaman virtual berbasis sistem baterai penyimpan energi mampu mengurangi deviasi frekuensi, RoCoF, tegangan, kecepatan rotor generator, sudut rotor generator, dan daya aktif generator karena kompensasi daya yang diberikan oleh kontrol inersia virtual dan kontrol redaman virtual berbasis sistem baterai penyimpan energi. Selain itu waktu menuju menuju nilai stabil pada frekuensi, tegangan, dan sudut rotor generator menjadi lebih cepat. Pada kondisi steady state terjadi peningkatan frekuensi dan penurunan daya aktif masing-masing generator
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Penetration of photovoltaics gives rise to system stability problems intermittency and uncertainty in renewable energy sources. In addition, generation based inverters can reduce inertia and damping on the system. The reduced of inertia and damping in the system results in an increased RoCoF, which can destabilize the system frequency if a small disturbance occurs. To overcome the system stability problem, a battery energy storage system (BESS) is necessary by using additional controls such as virtual inertia control and virtual damping control to help provide additional power to the system. Therefore, this thesis investigates the effect of installing and changing the value of the inertia constant in virtual inertia control and damping constant in virtual damping control based on BESS on small signal stability using modal analysis because it is quite effective in identifying the causes of system oscillations or deviations. The test uses the IEEE 9 bus system by considering generator controls such as a governor, automatic voltage regulator (AVR), and power system stabilizer (PSS). The analysis found that photovoltaic results in an increase in the comprehensive damping index (CDI) and eigenvalue experienced a shift towards the unstable area. So that resulted in frequency deviation and the RoCoF increased. Increasing the virtual inertia constant and the virtual damping constant can provide movement eigenvalue on intraplant mode moving towards the unstable area, while local area mode moving further away from the unstable area and at a specific value will rotate toward approaching the unstable area. The decreasing CDI shows this, but a constant value that is too high also causes the CDI to increase. The use of virtual inertia control and virtual damping control based on BESS can reduce frequency deviation, RoCoF, voltage, rotor speed generator, rotor angle generator, and active power generator due to power compensation provided by virtual inertia control and virtual damping control based on BESS. In addition, the time to reach a stable at frequency, voltage, and rotor angle generator becomes faster. On condition steady state, there is an increase in frequency and a decrease in the active power of each generator
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Energi Baru dan Terbarukan, Kontrol Inersia Virtual, Kontrol Redaman Virtual, Stabilitas Sinyal Kecil, Renewable Energy, Small Signal Stability, Virtual Damping Control, Virtual Inertia Control |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1007 Electric power systems control T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis |
| Depositing User: | Yoshiko Ricky Ananda |
| Date Deposited: | 20 Jul 2023 01:50 |
| Last Modified: | 20 Jul 2023 01:50 |
| URI: | http://repository.its.ac.id/id/eprint/98621 |
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