Smart Energy Meter and Digital Billing System for Bangladesh

Digitalization is very important in all sector of a developing country. A digital smart energy meter can reduce the harassment of a consumer and effort of vendors over the traditional physical energy meter reading and billing process. This paper presents a very effective solution for this problem with a smart energy meter and digital billing system. This energy meter can measure the real-time consumed energy and store this data into an SD card. For determining the consumed energy different electrical parameters such as AC voltage, the current, phase angle is measured against real-time. It can be implemented in both the prepaid and postpaid billing system. The proposed energy meter has a 20*4 LCD for understating the consumed energy or remaining energy to consumers. A GSM modem is integrated with the system that allows the vendor to inquire about consumed energy and making digital billing without errors. The main power passes through a relay to the consumer. The vendor can cut off or on the consumer's power supply by triggering relay via SMS. By implementing this smart energy meter, the vendor can ensure the proper use of energy. That will be a huge improvement on the national power grid. This smart energy meter is developed by using low-cost components that are available at the local market.