Modeling and analysis of the power transmission with an 110kV/3kA HTS cable in a meshed grid

With the development of high temperature superconducting (HTS) technology, superconducting power transmission cable have been put into the power network, which will greatly improve the efficiency of the grid, resulting in economic and social benefits. HTS cables are the alternatives in areas where space is extremely small or the overhead lines cannot be built due to security and environmental concerns. In this paper, a simulation model of an 110kV/3kA cold dielectric HTS cable is built using PSCAD/EMTDC based on the critical characteristics of the HTS cable considering the quench effects which is calculated by using MATLAB. Finally, an external short-circuit fault is simulated in a 110 kV HTS transmission line and the power flow distributions with HTS cable and without HTS cable are compared. The comparison results show that the HTS cable has greater short-circuit capacity and is beneficial to the power grid voltage stability and regulation.