Method and system for compressing data from smart meter

A system for compressing data from a smart meter, comprising:

• an LZ-encoding module configured to LZ-encode electricity load data whenever the data is collected by the smart meter, wherein the smart meter collects the electricity load data every preset first duration;
• a storage module configured to store the LZ-encoded electricity load data in a temporary database through a smart grid communication channel;
• a read module configured to read the electricity load data from the temporary database every preset second duration, wherein the read electricity load data is electricity load data stored in the temporary database within the second duration before a corresponding reading time point;
• and
• a SAX compression module configured to LZ-decode the read electricity load data, SAX-compress the LZ-decoded electricity load data, and store the SAX-compressed electricity load data in a data center;
• wherein the SAX compression module is specifically configured to determine a level of the LZ-decoded electricity load data based on a preset electricity load grading standard, and assign a character corresponding to the determined level to the LZ-decoded electricity load data.