基于反馈机制的电力系统量子密钥动态调整方案OA

The power system features numerous nodes and heavy traffic.Current quantum key distribution have insufficient key generation rates to meet the encryption requirements of power system services.This paper proposes a dynamic feedback-based quantum key adjustment scheme to address the security challenges in power system under limited quantum key resources in cross-domain key pools.The scheme consists of two phases,corresponding to the dynamic adjustment of key pool input and output.The feedback mechanism is applied to maintain equilibrium.During the dynamic adjustment of input,real-time selection and optimization of quantum key distribution protocols are carried out based on environmental factors to improve the real-time input rate of quantum keys.During the dynamic adjustment of output,the allocation and utilization of quantum key resources are settled to maximize the overall security level of data within the sampling time.Feedback on data security is reported to the input phase to ensure that the encryption can reach the pre-determined lower limit of overall security level.Experimental results show that the proposed scheme achieves an average gain of 12.59％in overall service security under high-security-risk conditions,outperforming conventional methods.