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Research of neutral line coupling method in low voltage power line carrier communication

Vol: 38, Issue: 4, Page: 222-229
2023
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Artifact Description

Aiming at the instability of low‑voltage power line carrier communication(PLC) problem caused by many factors including line attenuation, load characteristics and so on, a neutral line coupling method of low‑voltage PLC is proposed in this paper. Firstly, the topological structure of low‑voltage distribution area is analyzed. Secondly, the principle of neutral line coupling method of low‑voltage PLC is described, and the PLC channel models of neutral line coupling in this paper are established. Then the performance of neutral line coupling of PLC is simulated using Matlab software. Finally, the accuracy and application effect of neutral line coupling is evaluated with practical cases. The results show that the neutral line coupling method in this paper reduces the attenuation of PLC channel by more than 24.9 dB under the typical five branch heavy load line conditions; after on‑site construction, the success rate of data acquisition is significantly improved. It has many advantages such as high safety and easy construction, and can be used as an effective operation and maintenance means for PLC in low‑voltage distribution area.

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