Analisis Pengaruh Kapasitansi Terhadap Feroresonansi Pada Sistem Tenaga Listrik Menggunakan Diagram Bifurkasi

Sinuraya, Jeremia Septa Pratama (2016) Analisis Pengaruh Kapasitansi Terhadap Feroresonansi Pada Sistem Tenaga Listrik Menggunakan Diagram Bifurkasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Feroresonansi merupakan salah satu fenomena transien dalam sistem tenaga listrik yang dapat menyebabkan kegagalan pada isolasi peralatan sistem tenaga. Feroresonansi dapat terjadi pada sistem yang memiliki elemen yang bersifat kapasitif seperti kabel, kopling kapasitif, switching serta adanya induktansi non-linier seperti trafo. Akibat paduan tersebut, kejadian transien seperti switching atau petir dapat memicu munculnya feroresonansi berupa tegangan dan arus lebih dengan tingkat harmonik tertentu yang menerpa peralatan seperti Capacitive Voltage Transformer (CVT) Untuk memahami gejala feroresonansi diperlukan pembahasan yang lebih mendalam khususnya tentang seberapa besar peluang feroresonansi dapat terjadi pada sistem akibat pengaruh komponen/elemen di dalamnya. Salah satu metode yang digunakan adalah diagram bifurkasi, yaitu diagram yang menggambarkan seberapa besar pengaruh elemen kapasitansi terhadap gejala feroresonansi yang dapat terjadi.Pada tugas akhir ini digunakan software komputasi MATLAB untuk mengolah data yang dihasilkan dari simulasi model rangkaian feroresonansi. Hasil simulasi menunjukkan feroresonansi yang dipicu oleh impuls petir terjadi pada range Csaluran 0,001-0,07 μF. Feroresonansi akibat switching CB muncul pada range Cg 0,001-0,76 μF dan Cs 0,51-3 μF. Sedangkan feroresonansi akibat hubung singkat muncul pada range 0,001-3 μF. ======================================================================================================================== Ferroresonance is one of transient phenomena in electric power systems that can lead to failure of the power system equipment insulation. Ferroresonance can occur on systems that have capacitive elements such as cables, capacitive coupling, switching equipments and the existance of non-linear inductance such as transformers. Due to this combination, a switching transients or lightning strikes can trigger ferroresonance disturbance and generate a voltage and current harmonics over a certain level that hit equipment such Capacitive Voltage Transformer (CVT). A deeper analysis in needed to understand the symptomps of the ferroresonance specifically about how likely ferroresonance may occur due to the influence of components / elements on systems. One method generally bifurcation diagram. This diagram illustrating how much influence the capacitance element against ferroresonance symptoms that can occur. In this final project, a computation tool MATLAB is used to process data generated from the ferroresonance circuit simulation model. The simulation results show that ferroresonance triggered by lightning impuls occurs at the range of line capacitance 0,001-0,07 μF. Ferroresonance caused by switching impuls occurs at the range of Cg 0,001-0,76 μF and Cs 0,51-3 μF. Meanwhile ferroresonance caused by line-to-ground short circuit occurs at the range of line capacitance 0,001-3 μF

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.319 24 Sin a
Uncontrolled Keywords: Feroresonansi, Capacitive Voltage Transformer (CVT), Induktansi Non-linier, Kapasitansi, Diagram Bifurkasi
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive.
Divisions: Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: ansi aflacha
Date Deposited: 20 Jan 2020 02:42
Last Modified: 20 Jan 2020 02:42
URI: https://repository.its.ac.id/id/eprint/72742

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