Terminal constant value management closed-loop method and system adaptive to variable operation modes of novel power distribution network

The invention discloses a terminal constant value management closed-loop method and system adaptive to a novel power distribution network variable operation mode, and the method comprises the steps: a distribution network master station system issues a terminal constant value calling instruction, and obtains a terminal constant value; fixed value rationality online checking is carried out according to the called terminal fixed value; according to the online checking result of the fixed value, a new fixed value is reset for the terminal with the unreasonable fixed value; and downloading the new fixed value which is reset to the terminal and carrying out archiving and backup to complete a terminal fixed value management closed loop. According to the method, a complete management closed-loop process of constant value timed calling, constant value cross-region transmission, constant value online checking, constant value setting, constant value downloading and constant value filing of the terminal of the main stat