Interpretasi Partial Discharge Akibat Kecacatan Internal Pada Sambungan Kabel Tegangan Tinggi AC

Muhammad, Bintang Averusiya (2025) Interpretasi Partial Discharge Akibat Kecacatan Internal Pada Sambungan Kabel Tegangan Tinggi AC. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sambungan kabel merupakan salah satu titik kritis dalam sistem isolasi kabel tegangan tinggi yang sangat rentan mengalami degradasi akibat ketidakteraturan struktur dan cacat instalasi. Fenomena partial discharge (PD) sering kali muncul sebagai indikator awal dari penurunan kinerja sistem isolasi. Cacat internal seperti protrusion, void, dan insulation incision dapat menjadi pemicu utama terjadinya PD. Oleh karena itu, diperlukan kajian eksperimental untuk memahami karakteristik PD yang muncul akibat berbagai jenis kecacatan pada sambungan kabel berisolasi padat. Penelitian ini bertujuan untuk menganalisis karakteristik PD pada sambungan kabel berisolasi XLPE yang disambung menggunakan metode taped joint, dengan tiga variasi cacat internal yang dikondisikan secara terkontrol. Pengujian dilakukan menggunakan tegangan tinggi AC pada tiga level tegangan uji, yaitu PDIV, 1,3 PDIV, dan 1,5 PDIV. Sebelum dilakukan pengujian PD, kondisi isolasi kabel terlebih dahulu diuji melalui pengukuran tahanan isolasi menggunakan metode indeks polarisasi (PI) dan dielectric absorption ratio (DAR) untuk memperoleh gambaran awal tingkat degradasi isolasi. Parameter utama yang diamati meliputi nilai Partial Discharge Inception Voltage (PDIV), nilai tahanan isolasi melalui indeks Polarization Index (PI) dan Dielectric Absorption Ratio (DAR), serta pola sinyal Phase Resolved Partial Discharge (PRPD). Data sinyal PD diperoleh menggunakan osiloskop digital Tektronix MSO54B dan diolah menggunakan perangkat lunak MATLAB. Hasil pengujian menunjukkan bahwa kondisi no defect memiliki nilai PDIV tertinggi sebesar 13,73 kV, sedangkan void defect menghasilkan PDIV terendah, yaitu 8,8 kV. Cacat protrusion menunjukkan aktivitas PD tertinggi dengan jumlah titik mencapai 20.507 pada tegangan 1,5 PDIV serta pola PRPD yang lebih padat dan menyebar. Sebaliknya, insulation incision menunjukkan jumlah titik PD paling sedikit dan pola PRPD yang sempit. Perbedaan karakteristik PD antar jenis cacat ini, diharapkan dapat memberikan kontribusi dalam memahami perilaku PD akibat cacat internal serta menjadi acuan dalam deteksi dini kerusakan sambungan kabel tegangan tinggi berbasis analisis pola PRPD.
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Cable joints represent one of the most critical points in high-voltage cable insulation systems, which are highly susceptible to degradation due to structural irregularities and installation defects. Partial discharge (PD) often emerges as an early indicator of insulation deterioration. Internal defects such as protrusion, void, and insulation incision can serve as primary triggers of PD occurrence. Therefore, experimental studies are required to investigate PD characteristics caused by various defect types within solid-insulated cable joints. This research aims to analyze PD characteristics on XLPE-insulated cable joints connected using the taped joint method, with three controlled internal defect variations. The tests were conducted using high-voltage AC at three test voltage levels: PDIV, 1.3 PDIV, and 1.5 PDIV. Prior to PD testing, the insulation condition was assessed through insulation resistance measurements using the Polarization Index (PI) and Dielectric Absorption Ratio (DAR) to provide an initial overview of insulation degradation. The main parameters observed include the Partial Discharge Inception Voltage (PDIV), insulation resistance values through PI and DAR indices, and Phase Resolved Partial Discharge (PRPD) signal patterns. PD signal data were captured using a Tektronix MSO54B digital oscilloscope and processed using MATLAB software. The results showed that the no-defect condition yielded the highest PDIV value of 13.73 kV, while the void defect produced the lowest PDIV at 8.8 kV. The protrusion defect exhibited the highest PD activity, with 20,507 discharge pulses recorded at 1.5 PDIV and a denser, more dispersed PRPD pattern. In contrast, the insulation incision defect generated the fewest PD pulses and a narrower PRPD pattern. These differences in PD characteristics across defect types are expected to contribute to a better understanding of PD behavior due to internal defects and serve as a reference for early detection of high-voltage cable joint failures based on PRPD pattern analysis.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Sambungan Kabel, Partial Discharge, PRPD, PDIV, Kecacatan, Tegangan AC, Jointing Cable, Partial Discharge, PRPD, PDIV, Defects, AC Voltage
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Bintang Averusiya Muhammad
Date Deposited:	24 Jul 2025 05:26
Last Modified:	24 Jul 2025 05:26
URI:	http://repository.its.ac.id/id/eprint/121126

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