宽带电力线载波通信信道特性研究与建模

Research and modeling of broadband power line carrier communication channel

为提高低压电力线信道传输性能,拓宽信道带宽和降低高频信号在低压电力线中传输误码率,基于G3-PLC标准建立了一个高频载波通信信道模型,并应用于低压电网络。采集多组电力线噪声数据,在通信频段为100 k Hz～3 MHz的情况下,进行时域和频域二维空间仿真,并在PSpice中验证了模型的可靠性。实验结果直观展示了电力线的噪声干扰、阻抗和衰减特性,对深入理解和推进宽带电力线通信发展具有积极意义,为预测低压电网络中PLC信号传输特性提供了一种分析方式。

In order to improve the transmission performance of low-voltage power line channel, broaden the channel bandwidth and reduce the bit error rate of high-frequency signal transmission in low-voltage power line, a high-frequency carrier communication channel model based on G3-PLC standard is established and applied to low-voltage power network. Multi-group power line noise data are collected, and the two-dimensional spatial simulation in time domain and frequency domain is carried out in the case of 100kHz^3MHz communication frequency band. The reliability of the model is verified in PSpice. The experimental results show the noise interference, impedance and attenuation characteristics of power line directly. It has a positive significance for further understanding and promoting the development of broadband power line communication, and provides an analytical method for predicting the transmission characteristics of PLC signal in low-voltage power network.