Long-Range Data Synchronization Transmission for Three-Phase Electrical System

Le résumé fourni par la source

This paper presents a long-range data synchronization transmission system for monitoring three-phase electrical parameters. The system utilizes LoRa wireless communication to transmit data from the B-phase and C-phase measurement points to the A-phase node. The A-phase node then synchronously sends the data from all three phases (A, B, C) to a remote server via a 4G cellular network, including precise UTC timestamps and geographical location information. The system design incorporates GPS modules that output a Pulse Per Second (PPS) signal, which, combined with the microcontroller's hardware trigger mechanism, synchronizes the signal to the analog-to-digital converter (ADC) for sampling. Experimental results demonstrate that the proposed system successfully enables the simultaneous acquisition of spatially distributed three-phase voltage waveforms, with the MCU processing the current RMS values and corresponding time and location data, sending them to the remote server. This validates the system's effectiveness in long-range synchronized measurement and data transmission.

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