Research on LDPE for HV/EHVDC Cable Insulation Material

In order to achieve the goal of carbon peak and carbon neutrality, a newpower system with new energy as the main body should be built, andHV and EHV DC cables will become the main backbone networkcomponent of the new power grid. The focus of DC cable research is oninsulating materials, but there is little research on low densitypolyethylene (LDPE) for insulating materials in cable industry. Fourkinds of LDPE (A, B, C, D) for MV/HV cable insulation material frommanufacturers home and abroad were selected in this paper. The keyperformance parameters were compared by means of GPC, tensile test,volume resistivity test and DC breakdown test. A is more suitable as thebase resin and these results will provide experimental and data supportfor the localization of EHVDC cable insulation material.

Keywords:

EHVDC cable , LDPE , GPC , Volume resistivity , DCbreakdown