基于混沌扩频的中压电力线通信系统

Middle-voltage power line communication based on chaotic spread spectrum

随着电力系统自动化水平的不断提高,更多的遥测、遥控信息需要准确的传输,开发能在中压电力线上传输数据的扩频通信系统是有意义的。在对中压电力线通信原理及实现方法进行总结分析的基础上,提出采用混沌扩频的调制方法,并结合电力线信道特性的分析,来实现信号的安全传输。仿真结果表明:混沌扩频通信有传统扩频不能比拟的优越性能,能产生大量的伪随机性好的保密性强的序列,应用于中压电力线通信有着很好的前景。提出的混沌扩频技术的新方法,克服了原有扩频序列数的有限性,解决了通信系统安全传输的根本问题。

With the development of Electric power automation, more information of remote monitoring and measuring needs to be transmitted accurately, it is significant to explore spread spectrum communication system on medium-voltage power line. On the basis of analyzing the principles and methods of accomplishing on medium -voltage power line communication, It was presented that the combination of chaos spread spectrum with middle-voltage power line channel could achieve the security of signal. The simulation results show that the proposed method is superior to others. It can generate a large number of PN sequences, and has good foreground in middle-voltage power line communication. Consequently the method for chaos spread spectrum overcomes the limitations by using conventional sequences, and solves the essential problem for the security of signal.