Abstract
Inductive load with low power factor has led to the greater load current so that it is required a power factor improvement. Improvement of power factor in inductive load can be carried out by installing capacitor according to required proportion. Installation of capacitors can be used in parallel or series to electric source.The method of making design is divided into two parts, namely, the first is the designing of hardware and the second is the designing of the software. The designing of hardware consists of designing the power supply circuit, driver relay circuit, LCD circuit, minimum system circuit of ATmega 328P, capacitor bank circuit, current sensor circuit and voltage sensor circuit. The sensors used in this study were a non-invasive type SCT013-010 current sensor and a voltage sensor of a 500 mA type zero transformer. The design of software was in the form of work program tools that use the application of Arduino IDE. LCD displays the readout values of voltage, load current, active power, apparent power, reactive power and power factor. The ATmega 328P microcontroller processes data and determines the working relay so that the purpose of power factor value by cos phi ? 0.85 is achieved. The results achieved in this research is the design of automatic bank capacitor based on microcontroller of ATmega 328P can improve power factor by conducting injection capacitor to raise the power factor value according to PLN standard by cos phi ? 0.85 by connecting capacitor to the source of PLN paralleled by a single phase inductive load.
Highlights
Inductive load with low power factor has led to the greater load
by installing capacitor according to required proportion
Installation of capacitors can be used in parallel or series to electric source
Summary
Pelanggan tenaga listrik rumah tangga lebih banyak menggunakan beban induktif. Penggunaan beban induktif yang masih sering dapat dilihat di rumah tangga meliputi pompa air dan lampu TL. Komponen kapasitor sebagai pembangkit daya reaktif berfungsi untuk menyeimbangkan kebutuhan daya reaktif beban induktif [1]. Pada penelitian yang sudah dilakukan untuk perbaikan power factor konsumen rumah tangga menggunakan kapasitor bank. Penelitian yang terkait perbaikan faktor daya dengan judul perancangan kebutuhan kapasitor bank untuk perbaikan faktor daya pada Line Mess I di PT. Bumi Lamongan Sejati dilakukan dengan cara individual compensation untuk memperbaiki faktor daya beban [3]. Berdasarkan dari kedua penelitian yang sudah dilakukan, pada penelitian ini dibuatlah sebuah alat yang dapat memperbaiki faktor daya secara otomatis dengan beban induktif 1 fasa. Cara kerja alat ini memperbaiki faktor daya ≤ 0,85 dengan melakukan injection capacitor yang terhubung paralel terhadap beban induktif 1 fasa. LCD 20x4 sebagai media interface untuk menampilkan tegangan AC, arus AC, daya reaktif beban induktif 1 fasa dan faktor daya. Keterangan : P adalah Daya Aktif (W) V adalah Tegangan (V) I adalah Arus (A) φ adalah Sudut Fasa (°)
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