低压配电网载波通信噪声特性研究

低压电力线载波通信作为一种通信新手段,正在引起世界上电力界的广泛关注。但是,无处不在的噪音,负荷和人为的干扰以及一些不可预知的情况却严重地影响了信号的传输质量。通过使用格纳－威利分布（ＷＶＤ）时频分析法、Ｒｅｎｙｉ元素分析法,根据在不同地点,不同噪声环境取得的现场采样数据,对利用噪声来传递信号的可行性进行了初步的研究,并通过１个具体复杂噪声环境中的实例进行信号分析。最后,对高频信号在电力线中的传播

NOISE CHARACTERISTICS INVESTIGATION IN LOW VOLTAGE POWERLINE COMMUNICATION

The low voltage powerline is one of the complicated communication media and the quality of the signal transmission is strongly polluted by the omnipresent noise, heavy jamming due to a variety of loads, and unpredictable effects on signal propagation. From experimental measurement results to analytical methods, this paper is intended to establish Powerline performance and limitation parameters. Analytical methods are based on time frequency energy distribution applying the Wigner Ville Distribution and signal atomic decomposition applying the Renyi information. Experimental measurements have been taken at various noisy affected places in order to investigate the powerline noise characteristics. This paper also investigates the possibility of using noise as a tool for powerline communication. A practical model is proposed in order to guarantee data integrity in such noisy environment. Additionally, the high frequency Powerline transmission has been investigated and some preliminary results are given.