Abstract
The high voltage (HV) bushing design of insulation core, umbrella skirt, lead type, and production process were proposed according to the technical requirements of the 10 kV high temperature superconducting (HTS) cable system of Shenzhen Power Supply Bureau. The design took full consideration of the withstanding voltage, impulse voltage, partial discharge, thermal shock, and anti-condensation level. According to the proposed design, a verification prototype was built and tested. It subjected to five slow 77 K-300 K thermal shock cycles and five severe 77 K-300 K thermal shock cycles to verify its performance. The sensitive electrical quantities were tested after each cycle. After the 10 cycles, no degradation of performance and no breakdown or flashover occurred were found in the prototype. The results show that the design is qualified for the expected purpose.
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