Penentuan Kapasitas SCES Berdasarkan Kinerja CCT Menggunakan Trajektori Kritis Pada Sistem Multi Mesin

Putri, Rahmatilah Ananda (2021) Penentuan Kapasitas SCES Berdasarkan Kinerja CCT Menggunakan Trajektori Kritis Pada Sistem Multi Mesin. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam sistem tenaga terdapat beberapa aspek penting agar dapat dikatakan memiliki keandalan yang baik. Salah satunya adalah kestabilan transien, sehingga hal tersebut perlu diperhatikan terutama setelah terjadinya gangguan besar secara tiba-tiba. Sesaat setelah gangguan hilang, sistem akan berjalan kembali seperti semula. Namun, belum tentu sistem dapat kembali stabil seperti kondisi awal sebelum gangguan terjadi. Oleh sebab itu, salah satu upaya dalam menjaga kestabilan sistem adalah dengan memperhitungkan nilai Critical Clearing Time (CCT). CCT merupakan batas waktu maksimum toleransi suatu gangguan dapat terjadi sehingga tidak menyebabkan ketidakstabilan pada sistem. Apabila sistem pengaman beroperasi melebihi batas nilai CCT, maka dapat menyebabkan gangguan lain pada sistem. Perbaikan nilai CCT dapat dilakukan dengan menambahkan Supercapacitor Energy Storage (SCES) yang diletakkan pada bus generator. SCES dapat dijadikan solusi karena mampu menyimpan dan menyuplai listrik dalam jumlah besar secara simultan. Pada Tugas Akhir ini akan dilakukan simulasi dan analisa pengaruh penambahan SCES pada sistem 10 mesin IEEJ West reguler dan sistem 10 mesin IEEJ West yang terhubung infinite bus dengan menggunakan metode critical trajectory yang telah terbukti cepat dan akurat dalam mendapatkan nilai CCT. Setelah dilakukan simulasi dan analisa diperoleh hasil bahwa penambahan kapasitas SCES berbanding lurus dengan meningkatnya nilai CCT. Maka dari itu dilakukan penentuan kapasitas SCES yang tepat dengan menyesuaikan waktu sistem pengaman bekerja, sehingga diperoleh hasil akhir bahwa kapasitas SCES yang tepat untuk sistem 10 mesin IEEJ West reguler adalah 0.7 pu dan untuk sistem 10 mesin IEEJ West yang terhubung infinite bus adalah 0.6 pu.
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In a power system, there are several important aspects to state which it has a good reliability or not. One of them is transient stability, so it needs to be considered, especially after a large disturbance suddenly occurs. Shortly after the disturbance is gone, the system will operate again as before. However, the system may not be able to return to its stability as before when the disturbance occurred. Therefore, one of the efforts to maintain system stability is to consider the Critical Clearing Time (CCT). CCT is the maximum tolerance time limit for a disturbance to occur so as not to cause instability in the system. If the safety system operates beyond the limit of the CCT value, it can cause other disturbances to the system. Improvements to the CCT value can be done by adding a Supercapacitor Energy Storage (SCES) placed on the generator bus. SCES can be used as a solution because it is able to store and supply large amounts of electricity simultaneously. In this final project, simulation and analysis of the effect of adding SCES will be carried out on the 10-machine IEEJ West regular system, and the 10-machine IEEJ system West connected to an infinite bus using the method critical trajectory which has been proven to be fast and accurate in obtaining CCT values. After doing the simulation and analysis, the results show that the addition of SCES capacity is directly proportional to the increase in the CCT value. Therefore, it is necessary to determine the appropriate SCES capacity by adjusting the time the safety system works, so the result is the SCES capacity for the10-machine IEEJ West system regular is 0.7 pu and for the 10-machine IEEJ West system connected to the infinite bus is 0.6 pu.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	critical clearing time, critical trajectory, kestabilan transien, supercapasitor energy storage,critical clearing time, critical trajectory, supercapasitor energy storage, transient stability
Subjects:	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 > 20201-(S1) Undergraduate Thesis
Depositing User:	Rahmatilah Ananda Putri
Date Deposited:	13 Aug 2021 09:30
Last Modified:	13 Aug 2021 09:30
URI:	http://repository.its.ac.id/id/eprint/86325

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