An Open-Source Hardware/Software IED based on IoT and IEC 61850 Standard

In this paper, a measurement device based on “Open Source” components of hardware and software will be presented. This device has been used to measure voltages and currents of a low-voltage (LV) networks, on which a virtually unlimited number of sensors can be added, and the device is assembled of components available on electronic components Internet. The used hardware for this project is based on Arduino UNO R3 motherboard and peripheral sensors needed for measurement of the mentioned data. The Arduino motherboard is not only the sole peace of hardware, but it can also act as a Wi-Fi router for the devices and the laptop used for data presentation and server side computations. The server is programmed in Java programming language and is open source. Main goal was to make smart meter by the “Do It Yourself' method spending as much less founds as it is possible, by keeping user friendly interface, data validity, accuracy of measurement and ease of use for final user. Data gathering is achieved in almost 1 ms which is excellent for custom made device. However, the measured values should be calculated to RMS values to be usable for energy analyzes and further processing of information.