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Frontiers in artificial intelligence and applications

A Study of a Quantum-Secure Encrypted Communication Framework for Electric Utilities

Dong Wu, Linyu Peng, Dili Peng, Xu Liu, Tao Wang, Jiao Long, Binyang Yan

Published Nov 21, 2024• 0 citations
Publisher

Abstract

In order to meet the demand of quantum key generation rate for power business encryption, a quantum security encryption communication framework for power enterprises is proposed. Combining the deployment mode of power distribution terminal and communication network architecture, this paper uses the M/M/1 model with preemptive priority to calculate the queuing delay of each service’s quantum key, and compare it with the delay requirements to determine whether quantum encryption is possible. The simulation results show that the key generation rate is required to reach 205 kbit/s if the quantum encryption requirements of all services need to be met under the service type and traffic volume of this case. Conclusion: Under the limited generation rate, a reasonable and scientific method is given for the selective application of quantum encryption to power information services.

DOI
10.3233/faia241104

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In order to meet the demand of quantum key generation rate for power business encryption, a quantum security encryption communication framework for power enterprises is proposed. Combining the deployment mode of power distribution terminal and communication network architecture, this paper uses the M/M/1 model with preemptive priority to calculate the queuing delay of each service’s quantum key, and compare it with the delay requirements to determine whether quantum encryption is possible. The simulation results show that the key generation rate is required to reach 205 kbit/s if the quantum encryption requirements of all services need to be met under the service type and traffic volume of this case. Conclusion: Under the limited generation rate, a reasonable and scientific method is given for the selective application of quantum encryption to power information services.
This paper proposes an information encryption transmission method for power system communication network based on quantum security communication technology, which can effectively encrypt the information in power system and ensure the security of information transmission. Based on quantum secure communication technology, the communication network architecture of power system is constructed. Quantum-layer quantum key distribution Network (QKD) uses BB84 protocol to realize quantum information exchange and optical synchronization, provide quantum key to control layer, and encrypt network information of power system. The control layer is responsible for monitoring QKD status, reasonably managing keys, and issuing communication commands to the communication layer. The communication layer switch encrypts and transmits the power system communication network data generated by the application layer through the minimum attenuation routing algorithm according to the controller instruction. Experiments show that this method can realize the information encryption of power system communication network, and the quantum key encryption function, key source exchange function and the number of encryption services meet the requirements. The application of this method can improve the throughput and communication connectivity of power system communication network.
This research proposes a scheme of power information system based on quantum communication, aiming at improving the reliability and security of power service transmission. The new algorithm LD-WFQ (improved weighted fair queue) prioritizes the data packets that are about to timeout by estimating the expected time consumption of the data packets to be encrypted, so as to reduce the quantum encryption timeout rate of low priority services. The experimental results show that the LD-WFQ algorithm does not affect the performance of high priority services while reducing the ratio of overtime data packets, and shows good optimization effects under different key request rates. Compared with the traditional WFQ algorithm, the LD-WFQ algorithm has obvious advantages in meeting the requirements of power business encryption and improving the utilization rate of quantum keys, and has practical application significance.
With the expansion of the power grid and the increase of the complexity of the power system, the power grid has more stringent requirements for the security of the services transmission. In the secondary protection system of power systems, traditional encryption devices use symmetric encryption algorithms to add and decrypt communication data. Quantum keys have extremely high security. Applying the quantum keys to the power communication network encryption devices can greatly improve the security of service transmission. The quantum key resources generated by the existing quantum key distribution devices is limited, and it is difficult to ensure that all power services data are encrypted and transmitted. Therefore, it is necessary to prioritize the confidential transmission of important services by establishing appropriate evaluation methods for services importance. A relative importance matrix based on the transmission performance indicators of each service was built under the background of quantum communication, so as to obtain the importance of the power communication network business, and to carry out subsequent quantum key application strategy research.
In order to improve the security of power dispatching data transmission over the network, the combined modulation quantum key distribution system which encodes each single-photon signal with both phase modulation and polarization modulation is studied. Based on the abstract unit model of power dispatching data transmission network, the network deployment scheme of using quantum key to realize the encrypted transmission of dispatching data is elaborated. In order to better meet the needs of practical application scenarios, a quantum key allocation scheme that comprehensively considers service importance, service bandwidth, and the amount of remaining keys in the quantum key pool, a quantum key request response scheme that comprehensively considers service delay constraints, the number of service key requests and service importance, and a quantum key pool key resource supplement scheme that comprehensively considers the success rate of service encryption and the freshness of quantum keys in the quantum key pool are further designed. The scheme presented in this paper can provide a reference for the design and practical application of quantum secure communication network for power dispatching data.
The research and test of the security protection technology of distribution network quantum encryption information based on 5G multi access edge computing applies the communication technology and quantum encryption technology of 5G power private network to the terminal environment of distribution network. Through the integration of quantum key and power service master station, terminal and quantum key, 5G communication and quantum encryption equipment, It enables safe communication between the distribution terminal equipment and the distribution master station, and the system response time is controllable. The results show that in the 5G deployment environment, the maximum delay in 1000 tests is 121.23 ms, while in the 5G+quantum environment, the maximum delay is 200.23 ms.
The power distribution and utilization network is an important link between the grid and the user. The data privacy protection is related to the secure and stable communication of the whole network. Based on quantum secure communication and combined with existing power security protection measures, this paper proposed a quantum key application solutions. The system architecture contained the primary station layer, access layer and terminal layer. Through the quantum key distribution network, the key generation devices of both sides of the communication negotiated to generate the quantum key, which was used to encrypt the transmitted data. In the aspect of quantum key distribution, the paper proposed the distribution mode of online distribution and offline distribution, which promoted the flexible distribution of the terminal side quantum key, and realized the low-cost application. The feasibility of the scheme was verified through the pilot application.