Abstract
This paper describes the development of XLPE cable for HVDC transmission. We have developed the insulating material, which has high resistivity and little space charge accumulations, for DC XLPE cables.
The characteristics of breakdown strength and space charge accumulation were evaluated. As the results, it was found that model cables using new DC XLPE materials have good properties.
The +/-500 kV DC XLPE cables and factory joints were designed and have been manufactured. And they have been subjected to short-term electrical test and mechanical test. As the results, it was found that the developed DC +/-500 kV XLPE cable was satisfied with required insulating properties.
