Implementasi dan Evaluasi Desain Alat Deteksi Arcing Tegangan Rendah AC Pada Instalasi Sistem Tenaga Listrik Komersial

Holis, Abdullah Alfin (2026) Implementasi dan Evaluasi Desain Alat Deteksi Arcing Tegangan Rendah AC Pada Instalasi Sistem Tenaga Listrik Komersial. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Gangguan arcing pada instalasi tegangan rendah AC sulit dideteksi oleh perangkat proteksi konvensional, seperti MCB. Penelitian bertujuan untuk mengimplementasikan dan mengevaluasi desain alat deteksi arcing tegangan rendah AC yang menggabungkan dua algoritma pengolahan sinyal yaitu Fast Fourier Transform (FFT) dan Discrete Wavelet Transform (DWT) db4 level 4. Guna meningkatkan akurasi deteksi, penentuan threshold didasari dengan perhitungan statistik menggunakan Three Sigma Statistical Analysis. Penentuan threhold arcing seri mempertimbangkan level THDi yang akan berpengaruh pada nilai arus pada orde 3, 5, dan 7, sedangkan pada arcing paralel mempertimbangkan jumlah counter dalam satu window sinyal 10 ms. Pengujian akan dimulai dengan mengumpulkan data pada 4 level THDi mulai 1-40% yang akan menjadi landasan perhitungan threshold. Pengujian pada Workshop Hi-VITS dimulai dengan mencari lokasi ruang yang terdampak arcing dengan memvariasikan titik lokasi arcing menggunakan NI 9171 dengan membandingkan distorsi sinyal pada waveform setiap ruangan. Setting Threshold pada arc detector untuk arcing seri menggunakan formula Thershold= μ+3σ dengan band frekueni 140-160 Hz. Sedangkan untuk arcing paralel menggunakan nilai tetap yaitu magnitudo 1,86 PU dan counter 3. Alat dipasang pada 5 titik lokasi pada main feeder dan jalur percabangannya. Pada arcing seri, alat mampu mendeteksi gangguan sesuai lokasi terdampak dengan rata-rata akurasi 89,44% pada THDi 1–10% dan 92,85% pada THDi 10–20%. Pada arcing paralel, alat memperoleh akurasi total sebesar 91,11%. Integrasi alat dengan website menunjukkan tingkat keberhasilan pengiriman arcing seri sekitar 87,04%–92,04%, sedangkan pada arcing paralel sebesar 100%. Berdasarkan hasil tersebut, alat deteksi arcing yang dikembangkan mampu mendeteksi arcing dengan akurasi yang tinggi.
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Arcing faults in low-voltage AC installations are difficult to detect using conventional protection devices, such as miniature circuit breakers (MCBs). This study implements and evaluates a low-voltage AC arcing detection device using two signal-processing algorithms: Fast Fourier Transform (FFT) for series arcing and Level-4 Discrete Wavelet Transform (DWT) for parallel arcing. To improve detection accuracy, the detection threshold was determined using Three Sigma Statistical Analysis. The series-arcing threshold considered the THDi level, which affects current components at the 3rd, 5th, and 7th harmonic orders, whereas the parallel-arcing threshold considered the number of counters within a 10-ms signal window. Initial data were collected using NI9171 under normal, switching, and arcing conditions at four THDi levels ranging from 1% to 40%. The Hi-VITS Workshop test was conducted by varying arcing locations and comparing waveform distortion in each affected room. The series-arcing threshold was set using Threshold = μ + 3σ in the 140–160 Hz frequency band, while the parallel-arcing threshold used a fixed magnitude of 1.86 PU and counter value of 3. Five devices were installed on the main feeder and branch circuits. The device detected series arcing with average accuracies of 89.44% at 1–10% THDi and 92.85% at 10–20% THDi. Parallel arcing achieved an overall accuracy of 91.11%. Website integration showed data transmission accuracies of 87.04%–92.04% for series arcing and 100% for parallel arcing. These results show that the developed device can detect low-voltage AC arcing accurately and in real time.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Arcing Seri & Paralel, Tegangan Rendah AC, Setting Threshold, 3 Sigma Statistical Aanalysis. Series and Parallel Arcing, Low-Voltage AC, Threshold Setting, 3-Sigma Statistical Analysis.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK531 Current and voltage waveforms
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Abdullah Alfin Holis
Date Deposited:	22 Jul 2026 02:45
Last Modified:	22 Jul 2026 02:45
URI:	http://repository.its.ac.id/id/eprint/136476

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