Auxiliary power emergency recovery switching method and system

The invention discloses an auxiliary power emergency recovery switching method. Power supply operation of two busbars with different voltage sizes is achieved through ordered cooperation of knife switches arranged on the busbars; when a switch-on operation signal is acquired, whether one switch in a switch-on state exists on the busbar connected with a load or not is judged, if yes, the high-voltage switches are prohibited from being switched on, switching operation is finished, and if not, the high-voltage switches are switched on, and then the low-voltage switches are switched on. According to the auxiliary power emergency recovery switching method, one-key recovery of auxiliary power functions can be achieved on the condition that no related emergency circumstance occurs, the condition that an auxiliary power supply cannot be quickly recovered in an emergency is avoided, and meanwhile remote control over power supply recovery is achieved. 本发明公开了种厂用电应急恢复倒闸方法，通过母线上闸刀开关的有序配合，来实现两种电压高低不同的母线的供电操作，在获取合闸操作信号时；首先判