Power transaction data security demand level determination method and device, and medium

The invention discloses a power transaction data security demand level determination method and device and a medium thereof, relates to the technical field of electrical engineering, is used for providing a reasonable security level quantification system for power transaction data, and aims to solve the problem that a reasonable quantification system for power transaction data security demands does not exist at present. The invention provides a method for determining the security demand level of power transaction data, and the method comprises the steps: enabling the risk judgment of the power transaction data to be realized through a hierarchical fuzzy Petri network through obtaining all data indexes representing the information value and the vulnerability degree of the power transaction data, and obtaining the final credibility of the power transaction data; obtaining an initial state matrix representing the risk occurrence probability of each data index through each evaluation vector, and obtaining a final