A low cost power quality meter over the internet

This paper proposes a low cost three-phase power quality meter. Due to its characteristics, the meter can be applied for residential or small businesses use. The proposed device uses the power definitions from IEEE Standard 1459-2010. Moreover, it calculates the true rms value, the individual harmonics, and the voltage unbalanced factor. In order to validate the power quality meter, simulations and experimental results are presented. The results are presented on a web page that can be accessed by any device with internet access.

I. Introduction

A disturbance in power quality (PQ) can be defined as any disturbance found in voltage, current or frequency that results in failure, poor operation or lifetime reduction of the equipment [1].