Analisis Kestabilan Transien pada Sistem Kelistrikan Kapal Anchor Handling Tug Supply (AHTS) dengan Dynamic Positioning System

Ramli, Rifqi Alfarisi (2018) Analisis Kestabilan Transien pada Sistem Kelistrikan Kapal Anchor Handling Tug Supply (AHTS) dengan Dynamic Positioning System. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penambahan dynamic positioning system pada kapal bantu offshore menyebabkan pemasangan bow thruster yang memiliki daya besar. Kondisi pekerjaan di lapangan yang tidak menentu menyebabkan pembebanan yang tidak menentu pula. Kondisi ini menyebabkan adanya penambahan dan pengurangan beban yang signifikan sehingga dapat mengganggu kestabilan sistem kelistrikan. Fenomena ini disebut dengan fenomena transien sehingga studi tentang kestabilan transien sistem perlu dilakukan. Perubahan pada konfigurasi sistem kelistrikan dan pelepasan beban adalah sedikit dari banyak cara untuk menjaga kestabilan sistem. Cara-cara ini dilakukan agar dapat menyeimbangkan daya mekanis yang dikeluarkan generator dengan kebutuhan beban. Selain itu perubahan konfigurasi juga memberikan kesempatan untuk menemukan konfigurasi terbaik dalam penghematan penggunaan generator di kapal. Menggunakan metode simulasi, dilakukan beberapa perubahan konfigurasi dan didapatkan hasil bahwa konfigurasi closed bus 2 generator thruster dan 2 diesel generator memiliki kestabilan sistem yang sangat baik yang mampu mencapai kondisi stabil dengan pembebanan 110% pada masing-masing bow thruster. Sedangkan konfigurasi closed bus 1 generator thruster dan 2 diesel generator memberikan kesempatan untuk mengistirahatkan 1 generator thuster sehingga dapat menghemat pemakaian. Akan tetapi kestabilan sistem pada konfigurasi ini dapat ditingkatkan lagi dengan melakukan pelepasan beban. =============== The addition of dynamic positioning system on offshore auxiliary vessels leads to the installation of a large powered bow thruster. Unpredictable fieldwork conditions lead to uncertain loading. This condition causes the addition and reduction of significant loads that can disrupt the stability of the electrical system. This phenomenon is called a transient phenomenon so a study of transient stability of the system needs to be done. Changes in electrical system configuration and load shedding scheme are just a few of the many ways to maintain electrical system stability. This method is done in order to balance the generator mechanical power generated with the load needs. Additionally the configuration changes also provide an opportunity to find the best configuration in saving the use of generators on board. Using the simulation method, some configuration changes were made and the result was that the closed bus of 2 generator thruster and 2 diesel generator configurations have excellent stability that can reach stable conditions with 110% loading on each bow thruster. While the closed bus configuration of 1 thruster generator and 2 diesel generator provides an opportunity to rest 1 generator thuster to save generator usage. However, the stability of this configuration can be improved by conducting a load shedding scheme.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Dynamic Positioning System, Kestabilan Transien, Konfigurasi Sistem, Pelepasan Beban, dynamic positioning system, transient stability, system configuration, load shedding
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive.
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM773 Ship propulsion, Electric
Divisions: Faculty of Marine Technology > Marine Engineering > (S1) Undergraduate Theses
Depositing User: Rifqi Alfarisi Ramli
Date Deposited: 03 Aug 2018 02:18
Last Modified: 03 Aug 2018 02:18
URI: http://repository.its.ac.id/id/eprint/57754

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