Detection, classification and mitigation of power quality disturbances on the Ashesi University L.V. distribution network

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This paper seeks to provide a system for ensuring quality power supply at Ashesi University. The system would be based on ESP32 MCU board, and capable of measuring electrical power supply quantities and also offering protection against sustained power interruption, overvoltage, and undervoltage to the valuable power electronic equipment at the school. The hardware setup is capable of offering protection to 3-phase loads in real time. Throughout this paper, the hardware and software setup is emphasized and analyzed in detail, in-terms of specific components used such as the PZEM-004T from which the parameters are read using the ESP32 as well as firebase- which was used to design the database and host the web application. On top of reading the values, ESP32 is utilized for logging the data onto firebase real-time database through the inbuilt Wi-Fi module, for visualization of the data. RMS voltage and current, active power and power factor are closely monitored in comparison with the IEEE standards to help determine opening and closure of the relay module in-case of detrimental power disturbances. The system was able to read and log the data into an online database, and analysis of these readings in line with the set standards indicated proper operation of the system.
Capstone Project submitted to the Department of Engineering, Ashesi University in partial fulfillment of the requirements for the award of Bachelor of Science degree in Electrical and Electronic Engineering, May 2022
real-time voltage measurement