Desain dan Implementasi Peralatan Deteksi Arcing Tegangan Rendah Berbasis LabView

Azmi Wicaksono, Dimas Anton Asfani, I Made Yulistya Negara
Submission Date: 2017-01-13 14:02:25
Accepted Date: 2017-03-17 10:12:41

Abstract


Busur api listrik tegangan rendah timbul saat terjadi hubung singkat dan memicu kebakaran. Fenomena hubung singkat terjadi saat peralatan pengaman tidak dapat mendeteksi gangguan yang terjadi, meskipun nominal arus saat terjadi hubung singkat sangat tinggi namun durasi hubung singkat sangat cepat sehingga peralatan pengaman konvensional seperti fuse dan circuit breaker (CB) tidak dapat mendeteksi gangguan tersebut, hal inilah yang menimbulkan kebakaran karena hubung singkat. Pada Tugas Akhir ini akan dilakukan pendeteksian arcing pada tegangan rendah dengan mengamati karakteristik arus busur api yang meningkat secara signifikan pada durasi waktu tertentu. Sinyal arus yang masuk akan ditransformasikan menggunakan wavelet. Eksperimen dilakukan dengan membandingkan 3 kondisi yaitu kondisi normal, penambahan beban (switching) serta arcing. Terdapat 2 batas (threshold) yang digunakan sebagai parameter pendeteksian. Threshold pertama adalah nilai arus high frequency maksimum 2A dan yang kedua adalah jumlah titik gangguan sebanyak 7. Berdasarkan hasil pendeteksian, indikator normal akan “ON” selama threshold pertama dan kedua tidak terlampaui, indikator switching “ON” saat threshold pertama terlampaui namun threshold kedua tidak, sedangkan indikator arcing “ON” saat kedua threshold terlampaui.


Keywords


Busur Api Listrik Tegangan Rendah; Transformasi Wavelet; Threshold arus HF; Threshold titik gangguan.

References


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