摘要
双向工频通信技术是一种新型的配电网数字通信技术.介绍了双向工频通信的基本原理;根据配电网基本结构建立了电路模型,阐述了信号调制与传播的特点,说明其本质是电网中各种暂态过程的组合;分析了电网运行状态对信号的影响、可能存在的问题及其解决方法;在Matlab/Simulink仿真平台上,利用小波变换和多分辨率分析研究了信号的时频特性,并据此设计FIR滤波器以实现信号的提取.
TWACS （Two Way Automatic Communication System） is a new kind of digital communication technology in distribution networks. The basic principle was introduced. A circuit model was established according to the structure of distribution networks and the result shows that the modulation and propagation are network transient processes in essential. The influence of network operating mode on signal transmission,problems and its resolution were also studied. By wavelet transform and multiresolution analysis,the time-frequency characteristics of signal were researched in Matlab/Simulink and a FIR filter was designed for signal extraction.
基金
安徽工程科技学院青年科研基金资助项目(2006yq044)
