Combined electric appliance with double-bus segmented wiring mode, and operation method thereof

The invention relates to a combined electric appliance with a double-bus segmented wiring mode. The combined electric appliancecomprises a first bus, a second bus, a third bus and a fourth bus, and the first bus, the second bus, the third bus and the fourth bus are all connected with a bus coupler spacing mechanism; and the bus coupler spacing mechanism comprises a first connecting wire connecting the second bus and the fourth bus, a second connecting wire connecting the first bus and the third bus, and a third connecting wire connecting the first connecting wire and the second connecting wire. According to the wiring mode, only one set of bus coupler interval is configured, the effect of two sets of bus coupler intervals is achieved, and the bus coupler interval can serve as a connection interval of the first bus and the second bus and a connection interval of the third bus and the fourth bus, and can also serve as a bus-tie spacer of the second bus and the third bus and a bus-tie spacer of the first bus and