Closed water leakage fault judgment method, system, equipment and medium

The invention discloses a closed water leakage fault judgment method, system and device and a medium. The method comprises the steps that operation data of an expansion water tank, operation data of a closed water mother pipe and operation data of a closed water tank are collected respectively; according to preset judgment logic, the collected operation data of the expansion water tank, the operation data of the closed water main pipe and the operation data of the closed water tank are compared with preset threshold values, and a closed water leakage fault judgment result is obtained; the method comprises the following steps: acquiring operation data of an expansion water tank, a closed water mother pipe and a closed water tank, and comparing the operation data of the expansion water tank, the closed water mother pipe and the closed water tank with a preset threshold value according to a preset judgment logic; and according to the comparison result, obtaining the judgment result of the closed water leakage fa