Abstract

This work manifests a low-cost threephase digital signal processing (DSP) based energy monitoring with online dataacquisition (DAQ) system. In this endeavor, multifarious parameters aremeasured. All these parameters are displayed on the TFT LCD of the microcontroller in the real time domain. Along with the measurement of miscellaneousparameters from the microcontroller, these parameters are directed over theinternet via Wi-Fi module. On the internet, there is a succinct, vivid andpithy data log of these measured parameters which show their respective instantaneous values and accumulates them onthe internet. This data log interprets energy monitoring over a period of the day, week, month or year. This energy meter canmeasure voltage (RMS), current (RMS), apparent power (S), real power (P),frequency, displacement factor, distortion factor and total harmonic distortion(THD) of current and voltage using a STM32F429microcontroller.

Keywords: Three Phase Energy Monitoring, Thin FilmTransistor, Digital Signal Processing, Data Acquisition System, OnlineMonitoring, Load Duration Curve.