Failure Analysis of HVDC Cable Accessories During R&D Tests

Abstract

HVDC cable accessories are key components of the future electricity transmission system. In the last three years, our team has been working on the research and development of HVDC cable accessories with a voltage level of 500 kV. Until the recently successfully passed type test, multiple failures have been experienced during R&D tests. This paper summarizes and analyses the recorded failures and may serve as a reference for future work on cable accessories design.