A Low Cost Smart Metering System Design for Smart Grid Applications

The most important parts of the smart meters are the sensing devices that are utilized to measure for both current and voltage magnitudes of the systems. Therefore, several investigations have to be carried out to improve practical applications of the smart metering systems. This paper presents a novel sensing device design for AC measurement systems. The proposed sensing system is firstly designed by means of the computer simulation tools and then the printed circuit board of the designed metering system is implemented. Afterwards, the practical circuit is tested under different conditions. In addition, the proposed system is compared with the previously designed sensing circuit by authors in terms of cost, advantages and disadvantages. The obtained results emphasized that the proposed new sensing circuit is capable of very low cost and very high accuracy.