PROTECTION ZONE SELECTION IN AN ELECTRIC POWER SYSTEM

摘要

Graph theory to define busline arrangements as a series of vertices (62) and edges (82). wherein the vertices include the number of busses (62) in the system and the edges include disconnect circuit branches connecting the individual vertices (82). The system operaor chooses a configuration, which determines the status of the various disconnect branches. A processor establishes an incident graph matrix, including positions of all the vertices and edges. The matrix is modified in accordance with graph theory and the condition of the disconnect switches. Graph operations are performed to produce a resulting matrix, which defines vertices and the edges incident thereon into zones of protections. Fault analysis in the busline can then be performed in accordance with each zone of protection.