Abstract
Electric power and power factor are two parameters that must be considered because they involve the quality of the energy consumed. In order to be able to analyze these, a microcontroller-based power and power factor meter are needed which can be further developed. In this research, a power and power factor meter based on the ATmega328P microcontroller was developed on the Arduino board. Several algorithms are used to calculate the frequency of the grids, as well as the true-RMS of voltage and current. The simulation results show that this system can measure the power and power factor for input voltages of 100 to 300 volts with a frequency of 45 to 156 Hz for loads up to 5 amperes. The mean calculation average error for linear load is 0.28% for active power and -0.33% for apparent power. Meanwhile, for nonlinear loads, the calculation average error for active power is 1.86% and apparent power is 0.47%.
Highlights
two parameters that must be considered because they involve the quality of the energy consumed
a power and power factor meter based on the ATmega328P microcontroller was developed on the
Several algorithms are used to calculate the frequency of the grids
Summary
Perubahan arus dan tegangan yang terjadi pada masukan daya dapat mempengaruhi besarnya nilai daya listrik yang dikeluarkan. W., (2020) dengan judul “Analisis Ketepatan Pengukur Tegangan True-RMS Jala-jala Listrik Berbasis Mikrokontroler ATmega 328P” [2]. Hasil pengujian menunjukkan bahwa sistem ini memiliki ketepatan pengukuran tegangan yang baik dengan galat rata-rata untuk pengukuran tegangan true-RMS listrik jala-jala adalah 0,21%, dengan kesibukan CPU mikrokontroler ratarata adalah 13%. Selanjutnya dari penelitian Rustianik, Y., (2020) dengan judul “Analisis Ketepatan Pengukur Arus RMS Beban Listrik Berbasis Mikrokontroler ATmega 328P” [3]. Sistem tersebut dapat bekerja dengan ketepatan pengukuran yang baik, memiliki nilai galat rata-rata pengujian beban linear 0,49% dan galat arus beban nonlinear adalah 0,41%. Penelitian tersebut selanjutnya dikembangkan oleh Fauziah N., (2020) dengan judul “Analisis Ketepatan Pengukur Frekuensi Listrik Berbasis Mikrokontroler ATmega 328P”. Mikrokontroler jenis ini memiliki memori yang bisa ditingkatkan (expandable) [5] sehingga dapat dikembangkan untuk dibuat data logger ke komputer atau android
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