Time Synchronization in Power-line Communication

This paper proposes possible way how to realise time synchronization for Smart Grid devices over power-line communication (PLC). Time synchronization methods like 1- PPS, IRIG-B, GPS time or IEEE1588 are well known and used generally in Smart Grids, but not suitable for most devices with PLC. PLC channel is considered as difficult due to strong interferences, slow communication speeds and variable topology. Proposed solution for low-voltage segment uses significant event on line, zero-crossing for synchronization purpose.