Technical trends of intermediate joints for HV XLPE cable in China

Currently XLPE cables have replaced oil-filled cables and are widely used in power system construction, which is environmentally friendly and easy for maintenance. More and more attention is paid to the properties of cable intermediate joints, as they are the weak parts of the cable line and will directly affect the security of power grid. In this paper, the development and application of intermediate joints for XLPE cable were introduced according its history in China. Furthermore, the future development direction of intermediate joints was prospected.