Fuzzy test method and system for power protocol

The invention discloses an electric power protocol fuzz testing method and system, relates to the technical field of industrial control systems, and solves the problem that a common protocol in an electric power system in the prior art has some vulnerabilities, so that the electric power system has security risks. The method comprises the following steps: firstly, establishing a Bayesian model, and defining prior probability distribution; collecting power protocol data in normal operation; training a Bayesian model by using the collected normal data; carrying out fuzzy testing on the protocol, generating test cases containing fuzzy variation, sending the test cases to the tested protocol for implementation, recording test results, updating the model by using a Bayesian method, considering new test results, and influencing probability distribution of corresponding characteristics in the model by observed abnormal behaviors; on the basis of the updated Bayesian model, generating a fuzzy test case of the next ro