Abstract:HPLC (high speed power line carrier communication) technology is a kind of high-speed power line communication technology which uses power line as communication medium for data transmission. Based on the expanding business needs of State Grid, cities all over the country are actively carrying out advanced application pilot based on HPLC to meet the rapid growth of communication data demand of State Grid. The intelligent energy meter of HPLC has the function of minute level data acquisition, which can realize real-time monitoring of residents' electric load and electric quantity. It can be widely used in any occasion of high-speed data transmission through power line, such as remote meter reading, smart home, intelligent building, remote monitoring, Internet of things, charging pile and street lamp control, etc. This paper mainly focuses on the basic principles, advantages and derived functions of HLPC, and deeply excavates the power consumption data, so as to provide the basis for residents and enterprises to better implement DSM and orderly power consumption.