The low voltage power line communication is one kind communication mode differing from traditional communication such as telecommunication, telephone, radio and satellite communication, etc. Since the Power line carrier communication transfers and exchanges data based on electric power network as the channel, it has been accepted by more users because of its economy, real-time property and easy access to low power users. However, for its special character as a high frequency communication channel, the noise interference of low-voltage power networks is much higher than through open-wire lines and cable, which more results from the connected load of the power line rather than just some natural phenomena. This paper gives a complete and systematic analysis on the transmission interference characteristics of low-voltage powerline and brings out the measures.
