Rahmaditya, Vito (2022) Studi Karakteristik Dampak Parameter Sistem Terhadap Inrush Current Berbasis Transformasi Wavelet. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Inrush current merupakan arus yang muncul ketika transformator daya pertama kali di-energize dan bernilai sangat tinggi. Dalam waktu yang lama dan frekuensi yang tinggi, suatu transformator dapat memendek umurnya karena inrush current menimbulkan suhu mekanis dan elektris yang tinggi terhadap transformator. Untuk itu, diperlukan kondisi yang tepat agar inrush current tidak bernilai terlalu tinggi. Penelitian ini akan menganalisis parameter apa saja pada transformator yang mengakibatkan tingginya nilai inrush current. Analisis dimulai dengan pemodelan transformator pada perangkat lunak ATP Draw dan dilanjutkan dengan analisis transformasi wavelet pada perangkat lunak MATLAB. Setelah disimulasikan dan dianalisis dengan transformasi wavelet, didapatkan bahwa parameter yang memengaruhi nilai dari inrush current adalah impedansi saluran dan sudut mula sinyal saat di-energize. Ketika impedansi saluran semakin kecil, maka nilai inrush current yang muncul semakin besar. Dan untuk sudut mula sinyal, ketika sudut 0°, 180°, 360°, dan kelipatannya akan bernilai minimum. Maka, desain sistem yang efektif dapat disesuaikan dengan cara mengkombinasikan besaran parameter-parameter dengan memperhatikan pengaruhnya terhadap inrush current, yaitu dengan memaksimalkan nilai impedansi saluran dan menggeser sudut mula hingga bernilai 0° atau 180° atau kelipatannya.
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Inrush current is the current that appears when the power transformer is first energized and has a very high value. In a long time and high frequency, a transformer can shorten its life because the inrush current causes high mechanical and electrical temperatures to the transformer. For this reason, proper design is needed so that the inrush current is not too high. This study will analyze any parameters in the transformer that result in high inrush current values. The analysis begins with transformer modeling on ATP Draw software and continues with wavelet transformation analysis on MATLAB software. After being simulated and analyzed by wavelet transformation, it is found that the parameters that affect the value of the inrush current are the line impedance and the starting angle of the signal when energized. When the line impedance is getting smaller, the inrush current value that appears is getting bigger. And for the initial angle of the wave, when the angle is 0°, 180°, 360°, and their multiples will be the minimum value. Thus, the effective system design can be adjusted by combining the magnitude of the parameters by considering their effect on the inrush current, namely by maximizing the line impedance and shifting the starting angle to 0° or 180° or multiples thereof.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Inrush current, wavelet, transformator daya, Inrush current, wavelet, power transformer |
| Subjects: | 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: | Vito Rahmaditya |
| Date Deposited: | 31 Jan 2022 01:24 |
| Last Modified: | 04 Jul 2024 08:29 |
| URI: | http://repository.its.ac.id/id/eprint/92545 |
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