A Non-intrusive Approach for Smart Power Meter

This paper presents the development of a non intrusive smart power meter capable of giving its users methods of remote management of electric power consumption information. It has as objectives the real-time monitoring of electric energy consumption using non-intrusive, with reduced size and low cost sensors, and the wireless management of the data. This meter can also be used as a module in other projects, by using the MQTT protocol. The emonLib library was used, allowing power factor measurement and compatibility with non-invasive current sensors. Communication between the power meter and the outer environment, was made through Wi-Fi technology, allowing observation of the data in real-time, either through Google Sheets, the HTTP web server hosted in ESP8266 module or on MyDevices Cayenne platform via MQTT protocol. As a case study of information provided by the meter, we use the prediction of the electricity bill. The smart power meter was tested in actual situations and using different kinds of loads, yielding to highly accurate measurements.