External power supply fusion wiring method for all-in-one engineering station

The invention relates to a power supply wiring technology of an all-in-one engineering station and particular, to an external power supply fusion wiring method for an all-in-one engineering station. According to the method, ring main units are adopted, instead, in a local scheme, two loops of cables of an off-station power supply are connected with a data bus SJIIM, and such an operation is also applied in a distant view scheme; and therefore, line integrity is ensured, power supply reliability and stability are improved, cable length does not need to be reserved, construction operation is simplified, the occupation of equipment is reduced, operation and maintenance are facilitated, and meanwhile, a property right problem caused by the intersection the wiring method with a distribution network is also avoided; the standby 0 section of a data station is additionally arranged for transition, so that the standby 0 section can be connected to a transformer BD2B so as to supply power to thetransformer BD2B, and at