The power communication system provides powerful technical support for realizing the intelligent operation and information management of the power grid and improving the operation efficiency and power supply quality of the power grid. Quantum key distribution (QKD) is considered one of the most promising technologies for commercialization. QKD uses a single photon to encrypt data to produce a more secure and reliable password. This paper intends to study the hierarchical, centralized control architecture of power dispatching based on quantum essential supply (QKD). The performance indexes of MDI-QKD under symmetric and asymmetric conditions were studied by local optimization. The optimal key formation rate of the algorithm is analyzed. From the perspective of quantum critical utilization, a quantum key utilization scheme for grid backbone dispatching service is proposed. The dynamic adjustment test of multi-node time slot and service key update rate is carried out. Experiments show that the MDI scheme can effectively improve the effectiveness of a multi-node QKD system. Thus, the security of data transmission of the core business of power dispatching data networks can be ensured to the greatest extent. AMDI can effectively reduce the transmission timeout of low-priority data streams because the delay of high-priority data streams reaches the proportion. It can be an excellent solution to the power system and the password requirements.
The power communication system provides powerful technical support for realizing the intelligent operation and information management of the power grid and improving the operation efficiency and power supply quality of the power grid. Quantum key distribution (QKD) is considered one of the most promising technologies for commercialization. QKD uses a single photon to encrypt data to produce a more secure and reliable password. This paper intends to study the hierarchical, centralized control architecture of power dispatching based on quantum essential supply (QKD). The performance indexes of MDI-QKD under symmetric and asymmetric conditions were studied by local optimization. The optimal key formation rate of the algorithm is analyzed. From the perspective of quantum critical utilization, a quantum key utilization scheme for grid backbone dispatching service is proposed. The dynamic adjustment test of multi-node time slot and service key update rate is carried out. Experiments show that the MDI scheme can effectively improve the effectiveness of a multi-node QKD system. Thus, the security of data transmission of the core business of power dispatching data networks can be ensured to the greatest extent. AMDI can effectively reduce the transmission timeout of low-priority data streams because the delay of high-priority data streams reaches the proportion. It can be an excellent solution to the power system and the password requirements.
In order to ensure the transmission security of electric power dispatching service data, a quantum key supply and dynamic adjustment algorithm is provided. Firstly, the key application scheme is determined according to the importance degree of different services, and the calculation method of the key pool capacity is also given. Secondly, the quantum key dynamic adjustment algorithm is designed based on the key update frequency and application schemes. Finally, the service model for the dispatching system is established, and our algorithm’s application performance for different scenarios is simulated under point-to-point/multipoint architectures. The test results show that the algorithm can realize the dynamic key adjustment in the selected adjustment period, and thus guarantee maximally the data transmission security in power dispatching data network.
Quantum cryptography is an epoch-making technology with irreplaceable security, which has been widely used in the field of secure communication. This paper first explores the application prospects of quantum communication technology in power systems. Secondly, this paper innovatively proposes a power secure communication method based on quantum keys. At the same time, this paper constructs the quantum key secure communication network architecture and analyzes the application principle and security mechanism of quantum key. Taking the quantum key management system as the core, the author designs and implements the quantum key security storage and business security process application model. Thirdly, this paper uses the local search algorithm to optimize the parameters of the MDI-QKD protocol under symmetric and asymmetric conditions, and gives its optimized key rate. Finally, this paper uses the actual quantum key distribution equipment, quantum VPN and network tester to build an experimental environment. The system uses a comprehensive network tester to simulate the power grid application business information to test and statistically analyze the core performance characteristics of quantum VPN, such as throughput, delay, and encryption algorithm. The experimental results can provide a reference for the popularization and application of the quantum secure communication system in the power grid production control and management information business.
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.
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.
With the continuous development of power communication network and the improvement of intelligent degree, network security and operation and maintenance become more and more important. Therefore, this paper proposes a solution for intelligent security operation and maintenance of power communication network based on Quantum key distribution (QKD). QKD is an encryption technology based on the principle of quantum mechanics, which can realize secure Key exchange and resist attacks of traditional encryption algorithms. We use QKD technology to generate and distribute security keys for protecting communication and data transmission in power communication networks. The results show that the efficiency and accuracy of communication data acquisition, transmission, analysis and processing of the Artificial Intelligence for IT Operations system of the power communication network using the power Internet of Things technology are far higher than that of the traditional operation and maintenance technology, which improves the operation and maintenance accuracy of the power communication network by about 25%. The intelligent operation and maintenance system of the power communication network designed by the author, it effectively improves the communication data processing capability and the reliability of operation and maintenance results, and can meet the current practical engineering application requirements. This study provides an innovative solution for the secure operation and maintenance of power communication networks, which is of great significance for protecting the security and stable operation of power communication networks.
The fifth-generation mobile communication (5G) has the advantages of high bandwidth, low time delay and low power consumption, and it can play an important role in all aspects of power transmission, substation, power distribution and electricity consumption, effectively making up for the disadvantages of traditional optical fiber communication and profoundly transforming the power communication network. However, the information security problems brought by the application of 5G technology are gradually becoming prominent. Based on this, a quantum key distribution strategy based on the quality of service (QoS) is proposed to improve the confidentiality of 5G electric power private network application scheme. Finally, the feasibility of quantum communication application in power dispatching system is verified. The test results show that the service quality of 5G private network meets the communication requirements of power grid services, the actual transmission delay of the power grid simulation dispatching data is about 1s, and there is no packet loss.