EXPERIMENTAL STUDIES ON CRYOGENIC SYSTEM FOR 22.9 KV HTS CABLE SYTEM
- Conference date: 16–20 July 2007
- Location: Chattanooga (Tennessee)
In terms of high transmission capacity with lower voltage, a high temperature superconducting (HTS) cable system is a very attractive challenge for utilities. However, the concomitant cryogenic system for the HTS cable system is one of the tantalizing problems in the operation. The reliability and maintainability of cryogenic system are the key issues to apply it to the real electric power grid. Korea Electric Power Corporation (KEPCO) is making an attempt to verify the applicability of the HTS cable system to improve the efficiency of electric power industry. Since May 2006, a 22.9-kV, 50-MVA, 3-phase, 100-m class HTS cable system with an open cooling system has been operated at the KEPCO Gochang test yard. Concurrently, another HTS cable verification test with the same electrical specification and an hybrid cooling system has been carried out by LS Cable (LSC) Ltd in close proximity to the KEPCO's HTS cable system within Gochang test yard. KEPCO conducts the operation of the open cooling system, and is evaluating the hybrid system of LSC with respect to facility performance and usability. This paper compares the cryogenic performance of both HTS cable systems and discusses cooling test results such as step response.
- High temperature superconductivity
- High voltage direct current transmission
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