Behavior anomaly detection and isolation method, device and system of power grid regulation and control cloud platform

The invention discloses a behavior anomaly detection and isolation method, device and system for a power grid regulation and control cloud platform. The behavior anomaly detection and isolation method comprises the steps of collecting real-time connection relation data with an external service node and real-time operation information of the system; inputting the collected real-time connection relationship data with the external service node into a pre-trained connection relationship evaluation model to obtain an abnormal connection evaluation score of the connection relationship, and comparing the abnormal connection evaluation score with the abnormal connection baseline score to judge whether the connection relationship of the service node is an abnormal connection; and inputting the collected real-time operation information of the service node into a pre-trained node behavior evaluation model to obtain an abnormal behavior evaluation score, and comparing the abnormal behavior evaluation score with the abnor