DESIGN OF POWER QUALITY ANALYZER BASED ON PIC MICROCONTROLLER ALONG WITH A COMPUTER

This paper describes the prototype of a power quality analyzer designed for real-time measures of AC voltage, AC current, active power, reactive power, complex power, power factor, frequency, and voltage total harmonic distortion of a single-phase power system. The prototype has a PICF4550 microcontroller that works in parallel to a computer. The microcontroller collects the data from the grid and sends to the computer to show real-time graphics of voltage and current in time and frequency domain. It also shows some electrical quantities measurements in a LCD display attached on the prototype. The results of two scenarios of tests are presented and compared to a commercial power quality analyzer.