A Method to Construct the Functional Mechanism Model for Substation Monitoring System

The substation monitoring system(SMS) is the eye of the substation to ensure the safe and stable operation of power system. The correctness of the SMS function is important to meet the reliable operation of the substation. However, the underlying logic and processing mechanisms of SMS functionality are complex and difficult to monitor. Therefore, a method to construct the functional mechanism model for SMS is proposed. Firstly, the sub-functions involved in the three devices of the monitoring system are sorted out. According to the execution process of the function, it is disassembled into an ordered set of key nodes, and the monitoring elements related to node status are screened. Finally, the same type nodes and monitoring elements are integrated to form a three-level functional mechanism model of “element-node-function” which is suitable for the whole monitoring system.