The invention relates to a
transformer substation
quantum communication model, a
quantum secret
key distribution center based on the model and a model achieving method. The communication model is a
quantum secret
key distribution system and comprises a quantum secret
key distribution (QKD) optical device, a secret key obtaining module and a secret key control module. The secret key control module, the secret key obtaining module and the QKD optical device are connected in sequence. The quantum secret
key distribution center comprises two levels. A primary quantum secret
key distribution center (QKDC) is configured in a control center, and a second QKDC is configured at the controller end of a
transformer substation. By defining a
password suite compatible with secret key distribution protocol and designing a secret key
distribution method, the safety and the efficiency of secret key distribution are improved, safe transmission of data is strengthened, and stability and safety of a power
system network in operation are guaranteed.