Multipurpose IoT Unit for Wireless Current Measurement in HV Networks

Abstract:
This paper deals with the design and implementation of a system for wireless current measurement in high voltage networks. The system consists of a local unit and wireless sensors. The work includes a detailed analysis of wireless technologies, their characteristics, parameters and potential for use in the proposed system. Furthermore, time synchronization methods are investigated to achieve accurate and reliable current measurement in different phases of the line. The result is a fully developed device model, including circuit design, software design, and mechanical design. A significant part of the paper is devoted to the implementation of the ESP-NOW based software solution and communication protocol.