电力通信的噪音仿真系统

在低压电力线上进行数字通信是近年来的一个趋势，但其恶劣的噪音环境是影响数字通信质量的主要因素。国内外对于电力噪音的文献相对较少。该文利用Matlab下的Simulink,Communications Blockset,Power System Blockset,Signal Processing Toolbox等工具箱，建立了一个产生电力噪音的仿真模型。对该模型运行产生的数据利用Sptool工具得到其波形图，与实测数据相吻合，证明了该模型的可行性。进而利用多种方法进行谱分析，得出处理电力噪音谱分析的有效方法。这无论是在理论分析和实践定量计算方面都提供了一种行之有效的方法。

Noise Emulation System of Power Communication

It is a trend to communicate in low-voltage power line. But its serious noise background is the main factor that affects the quality of digital communication. There are few documents about the noise of power communication. The paper introduces an emulation method of the noise of power communication by using Simulink,Communications Blockset,Power System Blockset and Signal Processing Toolbox in Matlab. The author makes use of the Sptool toolbox to dispose the emulation data and get its wave graph. The wave graph of emulation data coincides with the actual data. It proves that the emulation model is feasibility. At the end of the paper, the author makes use of several methods to analyze its PSD and educes an effective method to analyze the PSD of noise of power communication. It gives us an effective way in either theory analysis or practical application.