Analysis of DC Cable Test Standards and Key Problems in the Test of ±535 kV Cable System

How to ensure the material quality, manufacturing process of DC cable and test the reliability of DC cable system effectively has become the focus of attention. In the past decade, the test method of HVDC cable has been developed in an all-round way. The established standards or specifications, including CIGRE TB 496, GB/T 31489.1 and IEC 62895, have made clear requirements for the test methods in the development of DC cable system. In this paper, based on the experience of development of ± 535 kV DC cable in China, the background of the above standards are summarized, and the differences between GB/T 31489.1 and IEC 62895 are compared. What’s more, according to the electrical performance evaluation method of insulating materials during the development process of DC cable system and the type test of electrical performance in low temperature environment, some suggestions in the standardization work are put forward, which can be used as references for established the test scheme.