A novel kind of monitoring and analyzing system for digital substation functional loop

Currently, the schedule preparation of condition-based maintenance for the secondary devices in digital substation highly relies on the information supporting of the condition monitoring. In this paper, a novel kind of real-time condition monitoring and analyzing system for the functional loop applied in the digital substation is introduced. Based on the data captured in the network of process level by the collecting unit, an analyzer is equipped in a higher level in order to get the configuration of the digital substation, and furthermore, this virtual linkage of functional loop is displayed and updated on the client as undirected graphs. Using these graphs and with the help of the information in the offline database, this system can offer estimation results for the MTTF of a certain functional loop, which makes contribution to the digital substation condition-based maintenance in real-time.