Proposal of all solid insulated substation for future substation

This paper introduces concepts of the all solid insulated substation, which features environmental benignity, compactness, reduction of construction cost, being free from maintenance work, and so on. In the actualization of the all solid insulated substation, many problems have to be conquered, such as the development of the solid insulating materials with high heat conductivity and reasonable electrical insulating performance for a solid insulated transformer, a solid insulated compact connection system between power equipment, nondestructive diagnostic technique for the solid insulating materials, semiconductor switching devices for mechanics less power equipment, etc. This paper also depicts some part of our investigation.