Trans-department business instruction processing method suitable for electric energy acquisition system

The invention discloses a cross-department business instruction processing method suitable for an electric energy acquisition system, and belongs to the technical field of electric energy acquisition systems, and the method comprises the steps: configuring an encryption server at a master station of the electric energy acquisition system, and expanding ERTU communication protocols of the master station and substations; sending a first electric energy meter setting command to the master station through the marketing system; the master station generates a second electric energy meter setting command according to the extension protocol, and generates a parameter setting frame through the electric energy meter protocol; the content needing to be encrypted is sent to a master station encryption server, and an encrypted message is generated; the encrypted message is sent to the ERTU, the ERTU is inserted into the second electric energy meter setting command, a third electric energy meter setting command is generate