Feasibility of data communication through distribution transformers for Smart Grid applications

Abstract

This work introduces a novel solution to overcome excessive signal attenuation in distribution transformers for power line communication (PLC) in Smart Grids. The solution avoids classical hardware bypass and does not require sophisticated modulation schemes like OFDM. It explores the resonance that occurs in transformer windings at kHz range to transmit the communication signal. The Bit Error rate (BER) of a BPSK signal propagating through a distribution transformer was measured and an accurate model was simulated. The measured and simulated data presented show that the proposed solution has successfully propagated the signal through the grid transformer.