基于混沌扩频的中压电力线通信系统

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。

Middle-voltage power line communication based on chaotic spread spectrum

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.