Computer-aided protection system design with reconfiguration

A protection system design algorithm that encompasses all possible circuit configurations of a radial distribution system is presented. A predetermined set of coordination rules is incorporated to develop a relational database type managed coordination table. The algorithm performs both computerized placement and selection of devices which coordinate. Automated placement rules determine the location of any new devices required for circuit protection. Automated selection rules work with the coordination table in selecting groups of protection devices which mutually coordinate for the chosen circuit design. A design example is presented depicting a radial distribution system composed of three individual circuits