Synchrophasor Logger Based on Laboratory Oscilloscope and Raspberry Pi

Abstract

Synchrophasor measurement plays a critical role in improving the efficiency, reliability and security of distribution grids. The use of synchrophasors allows for advanced monitoring, control and protection of the distribution grid, providing valuable information for decision-making in real-time. In this paper, we present a simple framework based on open-source codes that can convert a typical laboratory oscilloscope to a synchrophasors logger with minimum investment and use devices commonly available in electrical engineering laboratories. We use simple algorithms to extract electrical quantities of interest and log them to a highly efficient time-series database. Post-processing and data analysis can be done for the active and reactive power of each individual harmonic and can be done by accessing the database remotely from any location connected to the internet.