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STP397 - AmpaCity Project Update – 40 MVA HTS Cable and Fault Current Limiter Installation in City Center

AmpaCity Project Update – 40 MVA HTS Cable and Fault Current Limiter Installation in City Center

M. Stemmle1, F. Merschel2, M. Noe3, A. Hobl4, K. Allweins1

1Nexans Deutschland GmbH, Hannover, Germany
2RWE Deutschland AG, Essen, Germany
3Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
4Nexans SuperConductors GmbH, Hürth, Germany
 
 
Abstract  In recent years significant progress has been made in the development of high temperature superconducting (HTS) power devices, in particular cables and fault current limiters. Several field tests of large scale prototypes for both applications have been successfully accomplished and the technologies are getting closer to commercialization. This paper will give an update on the German AmpaCity project, which started in September 2011. The objective of the project is developing, manufacturing and installing a 10 kV, 40 MVA HTS system consisting of a fault current limiter and of a 1 km cable in the city of Essen. Since it is the first time that a one kilometer HTS cable system is installed together with an HTS fault current limiter in a real grid application within a city center area, AmpaCity serves as a lighthouse project. In addition it is worldwide the longest installed HTS cable system. Within the project the development phase was finished in March 2013 with successfully completing the type test of the cable system. Subsequently, all system components were manufactured and the installation on site took about two months finishing at the end of November 2013. Afterwards, the commissioning test of the system was performed in December. The widespread use of HTS cables and fault current limiters depends upon the extent to which it is possible to improve the price performance ratio of HTS materials and to optimize manufacturing of cables as well as the cost and reliability of the required cooling technology. It is expected that relatively large technical advances will be made in the future of the comparatively new HTS technology, which in turn will bring associated cost reductions. For this reason, the AmpaCity pilot project in the downtown area of Essen in Germany will be an important step on the way to achieving more widespread application of HTS technology.
 

Keywords (Index Terms)  superconducting cables, superconducting fault current limiters, grid application, AmpaCity project, superconducting system

IEEE/CSC & ESAS SUPERCONDUCTIVITY NEWS FORUM (global edition), October 2014. 
Received August 30, 2014; Accepted August 30, 2014. Reference STP397; Category 5.
This invited presentation 4LOr3B-01 was given at the ASC 2014.
A manuscript was not submitted to ASC.