Vehicle-Based Dry Ice Cleaning System for Live-Line Insulators in Substations of 220 kV

A set of vehicle-based dry ice cleaning system was designed, which includes a dry ice cleaning machine, cleaning terminals, mechanical arms, a hydrautic driven lifting platform, caterpillar chassis, and compressed air system, etc. This system cleans the insulating bushings and post insulators in substations with living environment by using dry ice as the insulating medium. The system can not only work fast and clean effectively, but also prevent insulators from flashover. The results of power-frequency voltage-withstand tests and leakage current tests indicate that the insulativity of the material used by the vehicle system meets the requirements of live-line cleaning works in 220 kV substations. In addition, its wireless communication will not be affected by and will not interfere with the equipment in substations. Therefore, the vehicle-based dry ice cleaning system mentioned above is safe and efficient for insulator surface cleaning.