Analisis Partial Discharge Akibat Cacat Internal Dan Eksternal Pada Sambungan Kabel Bawah Tanah Menggunakan Tegangan Tinggi DC

Attaqi, Muhammad Danial Azka (2026) Analisis Partial Discharge Akibat Cacat Internal Dan Eksternal Pada Sambungan Kabel Bawah Tanah Menggunakan Tegangan Tinggi DC. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kabel bawah tanah berisolasi Cross-linked Polyethylene (XLPE) digunakan pada sistem distribusi listrik karena memiliki kekuatan dielektrik, stabilitas termal, dan keandalan yang baik. Namun, sambungan kabel menjadi titik kritis karena rentan mengalami defect akibat proses instalasi, ketidaksempurnaan material, pemotongan lapisan semikonduktor yang tidak merata, serta kontaminasi pada daerah antarmuka. Penelitian ini bertujuan mengkarakterisasi Partial Discharge (PD) pada sambungan kabel NFA2XSY 12/20 kV dengan tegangan DC menggunakan metode Weighted Pulse Sequence Analysis (WePSA). Pengujian dilakukan pada kondisi tanpa defect, insulation incision defect, void defect, dan surface sliding defect. Analisis mencakup nilai Partial Discharge Inception Voltage (PDIV), laju mean PD rate, perubahan muatan, interval waktu antar pulsa, distribusi probabilitas, dan pola WePSA. Hasil pengujian menunjukkan sambungan tanpa defect memiliki PDIV rata-rata tertinggi sebesar 28,15 kV, sedangkan void discharge memiliki PDIV rata-rata terendah sebesar 20,43 kV diikuti insulation incision discharge sebesar 20,97 kV dan surface sliding discharge sebesar 22,23 kV. Namun, void discharge justru menghasilkan mean PD rate paling rendah, yaitu 0,324 pulsa/s, dibandingkan insulation incision discharge sebesar 1,646 pulsa/s dan surface sliding discharge sebesar 1,669 pulsa/s. Hal ini menunjukkan bahwa PDIV tidak selalu sebanding dengan aktivitas PD pada tegangan DC. Analisis WePSA menunjukkan bahwa insulation incision discharge cenderung repetitif dan terlokalisasi, void discharge bersifat sporadis, sedangkan surface sliding discharge semakin aktif setelah tegangan dinaikkan. Maka dari itu, WePSA dapat membedakan karakteristik defect berdasarkan hubungan antar pulsa PD secara berurutan.
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Cross-linked Polyethylene (XLPE) insulated underground cables are widely used in electric power distribution systems because they have good dielectric strength, thermal stability, and reliability. However, cable joints become critical points because they are prone to defects caused by installation processes, material imperfections, uneven cutting of the semiconductive layer, and contamination at the interface region. This study aims to characterize Partial Discharge (PD) in NFA2XSY 12/20 kV cable joints under DC voltage using the Weighted Pulse Sequence Analysis (WePSA) method. The tests were conducted under four conditions, namely no defect, insulation incision defect, void defect, and surface sliding defect. The analysis includes Partial Discharge Inception Voltage (PDIV) value, mean PD rate, charge variation, time interval between pulses, probability distribution, and WePSA pattern. The test results show that the joint without defect has the highest average PDIV of 28.15 kV, while void discharge has the lowest average PDIV of 20.43 kV, followed by insulation incision discharge at 20.97 kV and surface sliding discharge at 22.23 kV. However, void discharge produces the lowest mean PD rate, which is 0.324 pulses/s, compared to insulation incision discharge at 1.646 pulses/s and surface sliding discharge at 1.669 pulses/s. This indicates that the PDIV value is not always proportional to the density of PD activity under DC voltage. The WePSA analysis shows that insulation incision discharge tends to be repetitive and localized, void discharge is sporadic, while surface sliding discharge becomes more active after the voltage is increased. Thus, WePSA can distinguish defect characteristics based on the relationship between consecutive PD pulses.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Defect, Partial Discharge, Sambungan Kabel, WePSA, Cable Connections, Defects, Partial Discharge, WePSA
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK351 Electric measurements.
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Danial Azka Attaqi
Date Deposited:	01 Aug 2026 02:57
Last Modified:	01 Aug 2026 02:57
URI:	http://repository.its.ac.id/id/eprint/140733

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