Review of the design, production and tests of compact AC HTS power cables

Review of the design, production and tests of compact AC HTS power cables

Power cables made of high temperature superconductors (HTS) are considered as most advanced applications ofsuperconductivity for electro-energetics. Several cables made of the First Generation (1G) HTS wires have been produced andinstalled to electrical grids worldwide. Power cables made of the Second Generation HTS wires (2G or Coated Conductors) are inactive development. Most basic principles of HTS power cables development have been published in many works since 90-ties. Inthis Review we would like to present our new developments mostly directed to 2G HTS compact power cables. We are presentingthe methods to optimize a design of 2G AC compact power cable providing uniform current distribution among cable layers and theproduction technology approaches to implement such a design. AC losses measurements in such cables and other test methods aredescribed. Some problems of the development 2G HTS power cables with small diameters are discussed. We presented as examplesdesigns, developments and test results of two major coaxial cables designs: single-phase (cable core and a shield) and three-phase(triaxial: with three coaxial phases).

Power cables made of high temperature superconductors (HTS) are considered as most advanced applications ofsuperconductivity for electro-energetics. Several cables made of the First Generation (1G) HTS wires have been produced andinstalled to electrical grids worldwide. Power cables made of the Second Generation HTS wires (2G or Coated Conductors) are inactive development. Most basic principles of HTS power cables development have been published in many works since 90-ties. Inthis Review we would like to present our new developments mostly directed to 2G HTS compact power cables. We are presentingthe methods to optimize a design of 2G AC compact power cable providing uniform current distribution among cable layers and theproduction technology approaches to implement such a design. AC losses measurements in such cables and other test methods aredescribed. Some problems of the development 2G HTS power cables with small diameters are discussed. We presented as examplesdesigns, developments and test results of two major coaxial cables designs: single-phase (cable core and a shield) and three-phase(triaxial: with three coaxial phases).