Simulasi Tegangan Lebih Pada Kabel Daya Bawah Tanah Tegangan Tinggi Akibat Perambatan Arus Petir Dalam Tanah

Putra, Aldrin Alvaro (2023) Simulasi Tegangan Lebih Pada Kabel Daya Bawah Tanah Tegangan Tinggi Akibat Perambatan Arus Petir Dalam Tanah. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada studi ini, dilakukan pemodelan dan simulasi kejadian tegangan transien akibat sambaran petir pada kabel daya kondisi normal dan pada kondisi kabel daya telah mengalamai penurunan kualitas menggunakan perangkat lunak ATPDraw 7.2. Analisa ini dilakukan dengan menggunakan model kabel daya 150 kV dengan variasi media tanah berupa pasir basah, kerikil basah, dan pasir/kerikil kering. Media tanah ini direpresentasikan sebagai suatu rangkaian listrik terdistribusi sesuai dengan jenis tanah. Hasil simulasi, pada kabel daya kondisi normal, sambaran petir merambat hingga isolasi kabel daya serta konduktor kabel daya. Pada nilai sambaran 50 kA, pada media tanah pasir basah, isolasi kabel daya bagian luar menerima tegangan senilai 15,8 MV, isolasi kabel daya bagian dalam menerima tegangan senilai 9,69 MV, dan konduktor kabel menerima 29,89 V. Lalu pada nilai sambaran 50 kA pada media tanah kerikil basah, isolasi kabel daya bagian luar menerima tegangan senilai 42,7 MV, isolasi kabel daya bagian dalam menerima tegangan senilai 26 MV, dan konduktor kabel menerima 29,89 V. Pada nilai sambaran 50 kA, pada media tanah pasir/kerikil kering, isolasi kabel daya bagian luar menerima tegangan senilai 127 MV, isolasi kabel daya bagian dalam menerima tegangan senilai 77,4 MV, dan konduktor kabel menerima 29,85 V. Lalu, pada simulasi tegangan transien akibat sambaran petir pada kabel daya yang telah mengalami penurunan kualitas, disimulasikan sambaran petir senilai 50 kA pada kabel daya dengan media tanah pasir basah. Konduktor pada kabel daya tersebut menerima tegangan senilai 1.5 MV, sebagaimana arus tersebut telah melebihi nilai basic insulation level pada kabel daya 150 kV. Hasil simulasi ini mengindikasikan bahwa bahwa perbedaan potensial pada kabel daya dan media tanah disekitarnya dapat mengakibatkan arus petir merambat pada tanah dan memberi dampak kerusakan pada kabel daya
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In this study, modeling and simulation of transient voltage events due to lightning strikes on power cables under normal conditions and under conditions where the power cables have experienced a decrease in quality are carried out using ATPDraw 7.2 software. This analysis was carried out using a 150 kV power cable model with a variety of soil media in the form of wet sand, wet gravel, and dry sand/gravel. This soil medium is represented as a distributed electrical circuit according to the type of soil. The simulation results, in normal condition power cables, lightning strikes propagate to the power cable insulation and the power cable conductors. At a strike value of 50 kA, on wet sand soil media, the outer power cable insulation receives a voltage of 15.8 MV, the inner power cable insulation receives a voltage of 9.69 MV, and the cable conductor receives 29.89 V. Then at a value a strike of 50 kA on wet gravel soil media, the outer power cable insulation received a voltage of 42.7 MV, the inner power cable insulation received a voltage of 26 MV, and the cable conductor received 29.89 V. At a strike value of 50 kA, the media dry sand/gravel soil, the outer power cable insulation receives a voltage of 127 MV, the inner power cable insulation receives a voltage of 77.4 MV, and the cable conductor receives 29.85 V. Then, in the transient voltage simulation due to lightning strikes on the cable power that has experienced a decrease in quality, simulated a lightning strike worth 50 kA on a power cable with wet sand soil media. The conductor on the power cable receives a voltage of 1.5 MV, where the current has exceeded the basic insulation level value on the 150 kV power cable. The results of this simulation indicate that the potential difference between the power cable and the surrounding ground media can cause lightning currents to propagate through the ground and cause damage to the power cable

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Kabel daya, Simulasi, Tegangan lebih, ATPDraw, Power cable, Simulation, Overvoltage
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission 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:	Aldrin Alvaro Putra
Date Deposited:	01 Feb 2023 07:29
Last Modified:	01 Feb 2023 07:33
URI:	http://repository.its.ac.id/id/eprint/95978

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