Analisa Peningkatan Proteksi Terhadap Busur Api Di PT.Pertamina (Persero) Refinery Unit Iii Plaju Menggunakan Metode Zsi (Zone Selective Interlocking)

Susilo, Toni (2015) Analisa Peningkatan Proteksi Terhadap Busur Api Di PT.Pertamina (Persero) Refinery Unit Iii Plaju Menggunakan Metode Zsi (Zone Selective Interlocking). Undergraduate thesis, Institut Technology Sepuluh Nopember.

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Abstract

Arc flash merupakan kejadian berbahaya yang dapat terjadi pada sistem kelistrikan industri. Besarnya nilai insiden energi arc flash dipengaruhi oleh lamanya faut clearing time (FCT). Berdasar pada standar koordinasi proteksi yang memberikan perbedaan waktu untuk operasi CB, maka hal ini sangat mempengaruhi besarnya nilai insiden energi. Semakin jauh dari beban, maka bahaya yang ditimbulkan akan semakin besar. Zone Selective Interlocking (ZSI) adalah sebuah metode pengurangan energi arc flash yang efektif dan relatif murah. Fokus dari metode ZSI untuk mempercepat waktu tripping pada beberapa kesalahan tanpa mengorbankan koordinasi selektif dan interjecting gangguan kedalam sistem. Dengan mampu lebih cepat membuka CB pada kondisi short-circuit atau ground-fault, tekanan (termal dan mekanik) pada sistem listrik dapat dikurangi. Pada tugas akhir ini metode ZSI diterapkan pada sistem kelistrikan PT. Pertamina (Persero) RU III tegangan 0,4 kV. ZSI mampu mengurangi nilai insiden energi arc flash pada bus MCC-6A.1 sebesar 65,77%, bus MCC-6A sebesar 80,08%, bus MCC-29/4.1 sebesar 65,77%, bus MCC-29/4 sebesar 79,95%, dan bus MCC-4 sebesar 68,62%. ========================================================================================================== Arc flash is a dangerous incident that can occur in industrial electrical systems. The value of arc flash incident energy is influenced by the length of faut clearing time (FCT). Based on the coordination of standards protection that gives time difference for CB operation, then it greatly affects the value of the incident energy. Getting away from the load, then the danger posed will be greater. Zone Selective Interlocking (ZSI) is a method of reducing arc flash energy effective and relatively inexpensive. The focus of ZSI method to speed up tripping on some fault without sacrificing selective coordination and interference interjecting into the system. By being able to more quickly open a CB on the condition of short-circuit or ground-fault, the pressure (thermal and mechanical) on the electrical system can be reduced. In this final project ZSI method applied to the electrical system of the PT. Pertamina (Persero) RU III voltage of 0,4 kV. ZSI was able to reduce the value of arc flash incident energy on the MCC bus-6A.1 amounting 65,77%, MCC bus-6A amounting 80,08%, bus MCC-29 / 4.1 amounting 65,77%, bus MCC-29/4 amounting 79,95%, and the MCC bus -4 amounting 68,62%.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.319 1 Sus a
Uncontrolled Keywords: arc flash, koordinasi proteksi, zone selective interlocking
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: Mr. Tondo Indra Nyata
Date Deposited: 27 Feb 2019 08:11
Last Modified: 27 Feb 2019 08:11
URI: http://repository.its.ac.id/id/eprint/62408

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