Electric power information system is related with the safe operation of power grid. To ensure the data of electric power information will not be eavesdropped or deciphered, we need a strict way of encryption. With the improvement of computing capacity, traditional encryption algorithms are at high risk of crack. Quantum communication technology is an absolute security encryption mode, which can significantly improve the safety of electric power information system. For the particularity of electric power production and management data by analysing the principle of quantum communication technology, we have put forward implementation plan of electric power information system data encryption scheme and quantum communication network.
Electric power information system is related with the safe operation of power grid. To ensure the data of electric power information will not be eavesdropped or deciphered, we need a strict way of encryption. With the improvement of computing capacity, traditional encryption algorithms are at high risk of crack. Quantum communication technology is an absolute security encryption mode, which can significantly improve the safety of electric power information system. For the particularity of electric power production and management data by analysing the principle of quantum communication technology, we have put forward implementation plan of electric power information system data encryption scheme and quantum communication network.
The secure transmission of data in power information systems relates to the safe operation of the entire power grid. To ensure that power information data cannot be eavesdropped or deciphered during transmission, a strict encryption method is required. As computer computing capabilities continue to increase, traditional encryption algorithms face the challenge of reduced security. Quantum communication technology is a kind of encryption method relatively safe in principle. It can be applied to data transmission in power information systems, greatly improving the security of the system. However, at present, there is a problem that the signal weakens in the long-distance transmission process of the quantum, so that the long-distance quantum communication is hindered. For the above problems, a method suitable for long-distance quantum communication is researched through the analysis of the principle of quantum communication technology.
With the rapid development of energy Internet, interactions between the power communication network and the cyber Internet become increasingly frequent, resulting in information security threats. Power grid encryption algorithms are mainly based on computational complexity, which will be facilely cracked by the development of quantum computing. Meanwhile, the quantum security communication technology, which is absolutely safe in in theory, can cope with the challenges brought by the improvement of computing. Basing on quantum security communication technology, this paper proposes a general architecture of quantum security communication system in power grid. Problems existing in the application of quantum secure communication technology in power system and key technologies that required to be developed are analyzed concretely. Eventually, several typical energy Internet functions, such as major power-securing events and Unified meter reading and charging service (UMRCS) are proposed to verify the rationality and feasibility.
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.
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.
With the increase of cyber-attacks, the risks of information leakage, falsification and forgery, and bypass control are intensified, and attackers can attack the primary station circuitously through the terminal, resulting in a wider range of security threats. Quantum cryptography has a higher level of security than traditional cryptography. In this paper, a quantum cryptosystem suitable for power communication access network is proposed, and various practical quantum communication devices are designed, and proposes a key reading mode between the service terminal and the quantum key mobile storage device, an interface protocol between the service terminal device and the quantum key mobile storage device, and a key management method applicable to the terminal for the service of the electric service. The application of quantum communication technology to power systems plays a vital role in ensuring the safe, stable and efficient operation of the power grid.
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.