EPON communication-based power failure self-recovery method for non-open-loop transformer station

The invention discloses an EPON communication-based power failure self-recovery method for a non-open-loop transformer station to achieve the technical aims that a power failure stand-by power supply for a non-open-loop transformer station can quickly and automatically be switched to transfer a power supply. A transformer station of a power supply system is equipped with failure self-recovery terminals to form a communication network, the failure self-recovery terminal collects associated AC signals and switch signals of the whole station, and an open-loop station, a non-open-loop station, power failure self-recovery starting and self-recovery motion logic determination can be realized. Compared with the prior art, the method has the advantages that the failure self-recovery terminals communicate with each other, the failure self-recovery terminals collect a current and voltage analog quantity and an input quantity of the station, a state magnitude for the station is then generated and sent to the communication network, the failure self-recovery terminals comprehensively make a judgment on the basis of local-based analog quantity information, input information and the state magnitude obtained from the communication network, a trip-out and closing operation value generated from the judgment is published on an EPON communication network or a corresponding trip-out and closing operation is carried out, and therefore power failure self-recovery is quickly achieved.