Study on the simplified distributed parameter model for HTS power cables

Nowadays, the power demand has been dramatically increasing in highly populated load centers. The high-temperature superconductor (HTS) cables are one possible solution for electricity transmission due to their higher transmission capacity and lower electrical loss compared with traditional power cables. A comprehensive and accurate model is very important for working condition prediction in order for power flow control and overvoltage protection, especially for HTS cable which is very expensive and lacking of operation experience. In this paper, a simplified model for HTS cable is described to further facilitate operating condition simulations. The self-, mutual inductances, capacitances of and between each layer are calculated to construct the parameter matrixes. By proper transformation, the electrical parameters matrixes can be represented by simplified PI sections. Uniform current distribution in conductor layers is always desired. The simplified distributed parameters model presented in this paper is also helpful for structure optimization to achieve uniform current distribution in conductor layers.