POWER QUALITY IMPROVEMENT USING DYNAMIC VOLTAGE RESTORER WITH IOT MONITORING

Power quality disturbances such as voltage sags and swells pose significant challenges to the stability and reliability of modern electrical systems, especially in environments with sensitive electronic loads. This project proposes an efficient and compact Dynamic Voltage Restorer (DVR) system designed to mitigate such voltage fluctuations without relying on bulky transformers or conventional energy storage elements. The DVR architecture includes a DSPIC30F2010 microcontroller for real-time monitoring and control, a MOSFET-based inverter circuit for injecting compensating voltage, and a PI controller to maintain steady voltage levels. Furthermore, the system is enhanced with Internet of Things (IoT) capabilities using the ESP8266 Wi-Fi module, enabling remote voltage tracking through the Thing Speak cloud platform. Both simulation and hardware results confirm the DVR’s effectiveness in compensating for voltage anomalies and improving load voltage stability. The integration of IoT not only supports real-time visualization of voltage trends but also allows for proactive maintenance and better system management. This approach offers a cost-effective and scalable solution for ensuring reliable power delivery in residential, commercial, and industrial settings.