Design and implementation of an evaluation system of functional damage in smart substation

In this paper, a functional damage evaluation system is designed and implemented. The rules of functional damage evaluation for equipment in smart substation follow the human experience problem handling. The electric wiring diagram of primary system and topological graph of secondary equipment are automatically generated. The information collected in online monitoring system is used to discover anomalies and potential failures. The states of the devices (including associated devices) and fault location can be obtained automatically by the functional damage evaluation system. Then the corresponding fault handling measures are suggested. The software is developed, realizing literal and graphical display of the evaluation of the specific damage for smart substation. The graphical demonstration of complex relationship helps the maintenance crew intuitively understand the current states of devices and quickly determine the influence of local defects on associated devices, which greatly improves the efficiency of maintenance in smart substation.