Abstract:Power dispatching data needs high real-time, but network bandwidth, data cache and other factors may cause data transmission delay, and power dispatching data may be attacked by external networks such as hacker intrusion and virus spread during transmission, which may lead to data tampering and pose a threat to power system security monitoring. In order to improve the real-time and security of power dispatching data transmission, a multi-path data encryption transmission method of power dispatching considering anti-attribute tampering is proposed. On the basis of dividing power dispatching data into multiple data blocks, a multi-path data block transmission communication chain is established to improve data transmission efficiency. The Advanced Encryption Standard algorithm is used to encrypt the data blocks, and an encryption key is generated for each data block to ensure the confidentiality in the power dispatching process. Linear regression fitting is used to extract the attribute characteristics of encrypted data blocks, and different paths are selected according to the attributes, and the power dispatching data are transmitted to the receiving end at the same time, thus completing the encrypted transmission of multi-path data of power dispatching. The experimental results show that the data transmission delay is 0.41ms, the data integrity pass rate is 97.9%, and the data authentication accuracy is 0.97.