Abstract
AbstractPower quality is a growing concern as the number of electric sensitive loads is increasing day by day in all fields. Poor power quality is badly affecting sensitive loads causing instabilit...
Highlights
Now-a-days, electrical equipment ranging from personal computers to automated manufacturing process are more susceptible to power quality problems
This paper presents a low cost, compact & standalone digital system using microcontroller for detecting and classifying potential Power Quality (PQ) events of sag, swell, interruption and unbalance in a 3-phase system
Swells and interruptions, Liquid Crystal Display (LCD) indicate the type of power quality problem and the magnitude of the voltage in p.u
Summary
Now-a-days, electrical equipment ranging from personal computers to automated manufacturing process are more susceptible to power quality problems. The faulty conditions of voltage sag, swell, interruption and unbalance are indicated by the respective LEDs, buzzer sound and LCD display message. Three potentiometers (R-POT, Y-POT and B-POT) one for each phase, are used at the output of regulators to generate different voltage conditions to be given to the microcontroller for classification of power quality problems. LCD receives signals from microcontroller and displays as “NC”, “SAG”, “SWELL”, “INTERRUPTON” and “UNB” for normal condition, voltage sag, swell, interruption and unbalance condition, respectively. It is observed that the lamp load is ON and the LCD shows normal condition and voltage values displayed for three phases are 1.00, 1.00 and 1.00 p.u. The buzzer and LEDs are OFF which indicates no disturbance in the system. The relay is switched OFF and load is disconnected from the supply
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
