Method and system for determining fault-free operation time of station after regular check based on original data

The invention relates to a method and a system for determining fault-free operation time after regular check of a station based on original data. The method comprises the following steps of: recording a recovery operation time point T3 when each fan in the station recovers operation after regular check; recording a first non-resettable fault time point T2 within a specified time interval after operation is recovered after regular checking; the fault-free operation time T4 of each fan after regular checking is calculated; the total operation sum S1 of each fan is equal to the difference between the fault-free operation time T4 of each fan after regular checking and the average installed capacity C1 corresponding to each fan, the total operation sum S1 of the fans in the station is accumulated to form the total operation sum S2 of the station, and the average installed capacity C1 of the fans in the station is accumulated to form the total installed capacity C2 of the station; and calculating the fault-free ope