Evaluasi Sistem Proteksi Petir Gedung B Teknik Elektro ITS

Rahardjo, Muhammad Rifqi (2024) Evaluasi Sistem Proteksi Petir Gedung B Teknik Elektro ITS. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dengan tingginya curah hujan di Indonesia, sambaran petir sering terjadi dan menyebabkan kerugian signifikan, seperti kerusakan peralatan, kebakaran, dan hilangnya nyawa. Penelitian ini bertujuan mengevaluasi sistem proteksi petir pada gedung B Teknik Elektro ITS, yang memiliki banyak peralatan listrik, evaluasi mencakup proteksi petir eksternal dan internal. Evaluasi eksternal mencakup sistem terminasi udara, down conductor, dan pentanahan petir. Hasil menunjukkan bahwa metode rolling sphere pada kondisi eksisting belum mampu melindungi gedung B. Rekomendasinya adalah mengubah jumlah terminasi udara dari 6 unit setinggi 1,3 meter menjadi 4 unit setinggi 3,3 meter, sehingga dapat melindungi area gedung seluas 2359,57 m2. Sistem down conductor dan pentanahan petir tidak ditemukan di gedung, sehingga arus petir tidak dapat dialirkan ke tanah. Rekomendasi pemasangan meliputi jalur down conductor sepanjang 282,85 meter menggunakan kabel NYA 50 mm2 dan pentanahan menggunakan 3 buah tembaga solid sepanjang 3 meter dengan diameter 15 mm sesuai standar IEC 62305. Pemodelan pentanahan dilakukan dengan tiga kondisi: tanpa pentanahan ekipotensial, dengan pentanahan ekipotensial, dan dengan pentanahan ekipotensial serta SPD. Simulasi dilakukan menggunakan ATP Draw dengan variasi arus petir 10 kA hingga 100 kA, dengan batas nilai GPR sebesar 5 kV. Hasil simulasi menunjukkan bahwa kondisi ekipotensial dengan SPD menghasilkan nilai GPR terendah, dengan GPR maksimum 0,63 kV di laboratorium. Kondisi ini menurunkan GPR akibat sambaran petir hingga 63,90% pada terminasi udara menara telekomunikasi dan 68,30% pada terminasi udara gedung B dibandingkan dengan kondisi ekipotensial tanpa SPD, memastikan peralatan laboratorium aman dari kerusakan akibat sambaran petir.
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With high rainfall in Indonesia, lightning strikes frequently occur, causing significant damage such as equipment damage, fires, and loss of life. This study aims to evaluate the lightning protection system at Building B of the Electrical Engineering Department, ITS, which houses many electrical devices. The evaluation includes both external and internal lightning protection. The external evaluation covers the air termination system, down conductor, and lightning grounding. The results indicate that the existing rolling sphere method is not capable of protecting Building B. The recommendation is to change the number of air terminations from 6 units at 1.3 meters height to 4 units at 3.3 meters height, thereby protecting an area of 2359.57 m2. The down conductor and lightning grounding system were not found in the building, thus the lightning current cannot be diverted to the ground. The installation recommendation includes a down conductor path of 282.85 meters using 50 mm2 NYA cable and grounding using 3 solid copper rods, each 3 meters long with a diameter of 15 mm, in accordance with IEC 62305 standards. Grounding modeling was carried out in three conditions: without equipotential grounding, with equipotential grounding, and with equipotential grounding and SPD. The simulation was conducted using ATP Draw with lightning current variations from 10 kA to 100 kA, with a GPR limit value of 5 kV. The simulation results show that the equipotential condition with SPD produces the lowest GPR value, with a maximum GPR of 0.63 kV in the laboratory. This condition reduces the GPR from lightning strikes by up to 63.90% at the telecommunications tower air termination and 68.30% at the Building B air termination compared to the equipotential condition without SPD, ensuring the laboratory equipment is safe from lightning-induced damage.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ATP Draw, Pentanahan, Proteksi Petir, Sambaran Petir, Grounding, Lightning Protection, Lightning Strikes.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	MUHAMMAD RIFQI RAHARDJO
Date Deposited:	30 Jul 2024 03:11
Last Modified:	30 Jul 2024 03:11
URI:	http://repository.its.ac.id/id/eprint/109347

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