The impact of liquid breakdown mechanisms on the design of composite dielectric structures

The assessment of dielectric integrity in insulating structures using a computer-based cumulative stress criterion is advanced. The computer-based automated insulation design program described provides the ability to assess the dielectric integrity of oil/cellulose structures by the establishment of the appropriate margin without the intuitive judgment which usually needed in this process. This tool is capable of dealing with multiple creep and/or bulk dielectric paths and can accommodate structures of unlimited complexity. Two simple case studies are introduced in order to illustrate the main principles of automated dielectric design