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Evaluation of the Use of Superconducting 380 kV Cable
Diese Studie führt eine Auslegung von supraleitenden Kabeln für die Anwendung im 380-kV-Drehstromnetz durch und erläutert allgemeine Aspekte des Einsatzes solcher Kabel im Höchstspannungsnetz. Dabei vergleicht sie die Supraleitungstechnologie unter vielen verschiedenen Kriterien mit anderen Leitungstechnologien. - This study describes the design of superconducting cables for use in the 380 kV three-phase network and explains general aspects of the use of such cables in the extra-high voltage grid. It compares the superconducting technology with other line technologies under many different criteria.
Development of high-temperature superconductor cables for high direct current applications
A design process for HTS DC cables was developed for high current applications. Based on the design process, a 35 kA HTS DC cable demonstrator was developed. The superconducting elements of the demonstrator were manufactured and tested individually at 77 K. Afterwards, the demonstrator cable was assembled and tested at 77 K. The assembled demonstrator successfully reached 35 kA at 77 K and self field conditions.
Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils
This work presents the development and application of high-speed fluorescent thermal imaging for quench analysis in high-temperature superconductors (HTS). Using a fluorescent coating, with a temperature-dependent light emission, temperature changes can be calculated over 2D surfaces. The technique uncovered peculiar transient effects in novel HTS tape architectures and also helped to verify and better understand hot spot development in both insulated and non-insulated, HTS–wound pancake coils.
Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications
High-temperature superconductors have distinct advantages compared to conventional conductors. Below their critical temperature, superconductors have immeasurably low ohmic losses. To maintain the superconducting state, superconductors require constant cooling. This study aims at identifying the environmental impacts of the application of superconductors in future grid technologies such as superconducting power cables.
Technology and readout for scaling up superconducting nanowire single-photon detectors
This work presents three advances to scale SNSPDs from few-pixel devices to large detector arrays: atomic layer deposition for the fabrication of uniform superconducting niobium nitride films of few-nanometer thickness, a frequency-multiplexing scheme to operate multiple detectors with a reduced number of lines, and the integration of SNSPDs with free-form polymer structures to achieve efficient optical coupling onto the active area of the detectors.
AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications
This work focuses on two topics. The first is the investigation of producing filaments on copper-stabilized coated conductors, with striations made after or before electroplating the tape. The second topic is the applicability of the striations for reducing the AC losses of cables, in particular the CORC® and RACC cables, which are made with high-temperature superconductor (HTS) striated tapes.
Hannes or The foreign Land
No elves, no wizards, but unfortunately no noble knights either. Just people like you and me. A chance encounter. Two men in advanced age. What begins as reminiscing about youth leads to an unresolved, deep conflict. We are all the architects of our own happiness. But what if we never learned to forge? This book is not a search for blame, but for the root causes of deeply felt ruptures in a person's life. "Hannes was an idiot. Those aren't my words. He said that about himself once. Perhaps not in the pathological sense, he added. He belonged more to the inconspicuous of his kind, after all, he could still move freely among us. In essence, Hannes even possessed a sort of charm that made him appear likable to the majority of people in his surroundings. Even as a child, he was quite popular among older ladies. They appreciated him for his respect and the politeness he showed them. He tried to win them over, just as he later did with his classmates and then with his friends. That was his way of interacting with people. But from a young age, he had a deficit."
