A knowledge-based system for insulation coordination

This paper describes the basic concepts of a knowledge-based system develop ed to support the insulation coordination process in the power systems desi gn area. It is particularly intended to perform insulation coordination in substation and transmission line design. Given the input specifications (e. g., overvoltages, environmental and operational data), the knowledge-based system generates standard withstand voltage levels for the equipment as wel l as air clearances and characteristics of insulator strings for transmissi on lines. The object-oriented approach has been adopted for its ability to represent and process knowledge without resorting to an inference engine.