Penggunaan Single Tuned Filter Untuk Memperkecil Harmonisa Yang Ditimbulkan Oleh Beban Non Linier Pada Transformator 400 kVA
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Abstrak — Peralatan listrrik seperti Ac drive, computer, LHE, Swiching power supplier, printer dan lain lain merupakan peralatan beban non linier. Banyaknya penggunaan peralatan beban non linier akan menghasilkan harmonisa seperti yang terjadi pada transformator 400 kVA di Universitas Malikussaleh Lhokseumawe. Nilai THDI yang didapat pada saat pengukuran awal sebesar 20,7 % Nilai sebesar 20,7% ini masih diatas nilai yang diiznkan oleh standart IEE 519-1992. Oleh karena itu diperlukan filter dalam memperkecil harmonisa yang timbul. Salah satu cara memperkecil harmonisa yang disebabkan oleh beban non linier tersebut adalah dengan memasang filter pasif. Filter pasif terdiri dari beberapa jenis, dalam penelitian ini filter yang sudah dicoba adalah filter pasif single tuned.
Kata kunci: harmonisa, single tuned filter, THD
Abstract— Electrical equipment such as Ac drive, computer, LHE, Swiching power suppliers, printers and others are non linear load electrical equipment. The large amount of non-linear load usage will produce harmonics as happened to the 400 kV transformer at Malikussaleh University Lhokseumawe. THDI value obtained at the time of initial measurement of 20.7% Value of 20.7% is still above the value permitted by the standard IEE 519-1992.. Therefore it needs filters to minimize the harmonics that arise. One of ways to minimize the harmonics caused by non linear loads is by installing passive filters. As they consist of several types, this research tested the single tuned passive type of filter.
Keywords: harmonics, single tuned filter, THD
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