Analisis Harmonisa Pengaruh Rekonfigurasi Sistem Distribusi AC Menjadi DC Pada Kapal Tanker Berbasis Simulasi

Budianto, Firman (2021) Analisis Harmonisa Pengaruh Rekonfigurasi Sistem Distribusi AC Menjadi DC Pada Kapal Tanker Berbasis Simulasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Rekonfigurasi sistem distribusi AC menjadi DC merupakan cara untuk meningkatkan effisiensi penggunaan bahan bakar pada diesel generator kapal. Dengan merekonfigurasi sistem distribusi maka rugi-rugi yang dihasilkan pengaruh impedansi pada arus AC dapat dihilangkan. Namun, dalam merekonfigurasi sistem distribusi terdapat komponen tambahan yang dapat meningkatkan distorsi harmonisa dan total harmonic distortion (THD) pada sistem kelistrikan kapal, yaitu konverter. Peningkatan harmonisa ini memengaruhi kualitas daya yang dialirkan pada sistem karena bentuk gelombang mengalami perubahan tidak sinusoidal sempurna, sehingga peralatan listrik kapal dapat mengalami overheating yang dapat menurunkan performa dari peralatan listrik kapal. Pada penelitian ini dilakukan investigasi untuk mengetahui besaran harmonisa yang terjadi ketika kapal menggunakan sistem distribusi listrik DC. Gangguan harmonisa disimulasikan menggunakan software komputer, dengan memperhatikan empat kondisi operasional kapal. Dari hasil simulasi distribusi DC, distrorsi harmonisa yang terjadi pada bus generator panel sebesar, 11,23% THD pada kondisi sailing, 11,23% THD pada kondisi leaving/arriving, 11,23% THD pada kondisi loading-unloading, dan 11,23% THD pada kondisi at port. Berdasarkan dari standar IEEE 519-2014 batas dari distorsi harmonisa sebesar 8% THD, sehingga hasil simulasi distrorsi harmonisa pada sistem distribusi DC melebihi batas dan perlu dicari solusi untuk mengurangi distorsi harmonisa yang terjadi. Solusi untuk mengurangi distorsi harmonisa dalam penelitian ini adalah dengan cara pemasangan filter harmonisa, yaitu filter pasif single-tuned pada bus-bus yang melebihi batas standar. Setelah melakukan pemasangan filter harmonisa distorsi harmonisa yang terjadi pada bus generator panel mengalami penurunan menjadi, 0,53% THD pada kondisi sailing, 0,53% THD pada kondisi leaving/arriving, 0,53% THD pada kondisi loading-unloading dan 0,53% THD pada kondisi at port, sehingga distorsi harmonisa pada sistem distribusi DC sudah tidak melebihi batas standar IEEE 519-2014.
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The reconfiguration of the AC distribution system to DC is a way to increase the efficiency of fuel use in the ship's diesel generator. By reconfiguring the distribution system, the losses generated by the impedance effect on the AC current can be eliminated. In reconfiguring the distribution system, there are additional components that can increase harmonic distortion and total harmonic distortion (THD) in the ship's electrical system, namely the converter. This increase in harmonics affects the quality of the power delivered to the system because the waveform changes that are not perfectly sinusoidal, resulting in overheating of the electrical equipment which can reduce the performance of the ship's electrical equipment. The problem of harmonic distortion in the reconfiguration of the AC to DC distribution system needs to be solved. In this study, harmonic distortion is simulated using computer software, based on four-ship operating conditions. From the DC distribution simulation results, the harmonic distortion that occurs in the bus generator panel is 11.23% THD in sailing conditions, 11.23% THD in leaving/arriving conditions, 11.23% THD in loading-unloading conditions, and 11. 23% THD on at port condition. Based on the IEEE 519-2014 standard, the limit of harmonic distortion is 8% THD, so the simulation results of harmonic distortion in a DC distribution system exceed the limit and it is necessary to find a solution to reduce the harmonic distortion that occurs. The solution to reducing harmonic distortion in this research is by installing a harmonic filter on buses that exceed the standard limit with a filter type, namely a single-tuned passive filter. After installing the harmonic filter, the harmonic distortion that occurs on the bus generator panel has decreased to 0.53% THD in sailing conditions, 0.53% THD in leaving/arriving conditions, 0.53% THD in loading-unloading conditions, and 0, 53% THD in at port condition, so that the harmonic distortion in the DC distribution system does not exceed the IEEE 519-2014 standard limit.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	reconfiguration distribution system, harmonic distortion, harmonic filter, rekonfigurasi sistem distribusi, distorsi harmonisa, filter harmonisa.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Firman Budianto
Date Deposited:	31 Aug 2021 02:09
Last Modified:	31 Aug 2021 02:09
URI:	http://repository.its.ac.id/id/eprint/91061

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