一、PLC(Power Line Commumcation电力线通信)的概念和历史 所谓PLC就是指利用公用电力网电源线作为物理介质,进行话音、数据、图像等信息通信的系统,这方面的应用已有几十年的历史。由于其只需有交流市电的供给,不需另外铺设通信线路就可构成通信网络的特点,因此具有投资小、见效快、使用方便的优点。但由于交流市电存在电网杂波干扰大、不便于跨变压器传输 First, PLC (Power Line Commumcation power line communication) concept and history The so-called PLC refers to the use of public power network power line as a physical medium for voice, data, images and other information systems, which has decades of history . Because it only needs the supply of AC mains supply, the communication network can be formed without additional communication lines, so it has the advantages of small investment, quick response and convenient use. However, due to the presence of AC power grid clutter interference, inconvenient trans-transformer transmission