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Topology Processor design for EHV Substations

The intelligent application is one of the major issues in power system research. The topology identification is one of the most important modules to develop intelligent system such as fault diagnosis and restoration expert system. This paper presents the topology processor in order to identify topology effectively in a practical 765kV substation in Korea composed of the double-bus and 1.5 CB, which is the typical structure of EHV substations. The proposed topology processor redefines switching group composed of circuit breaker, disconnecting switches and ground switches as aggregated circuit breaker. The proposed system remarkably reduces the search space and search time for topology identification. The proposed topology processor is developed using the data of a practical 765kV substation in Korea. The proposed system can be applied to intelligent systems such as fault diagnosis and restoration expert system and contribute to improving the performance of intelligent systems.