Development of an Air Coil Superconducting Fault Current Limiter
Development of an Air Coil Superconducting Fault Current Limiter

Author: Naeckel, Oliver

Publisher: KIT Scientific Publishing

Published: 2016-11-14

Total Pages: 220

ISBN-13: 3731505266

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Electrical power grids are the lifeline of technical infrastructure and fundamental for industry and modern lives. Fault Currents can disrupt the continuous supply of electrical energy, cause instable grid conditions and damage electrical equipment. The Air Coil Superconducting Fault Current Limiter (AC-SFCL) is a measure to effectively limit fault currents. The concept is investigated and proven experimentally by designing, building and successfully testing a 60 kV, 400 V, z = 6% demonstrator.

Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant
Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant

Author: Bayer, Christoph M.

Publisher: KIT Scientific Publishing

Published: 2017-02-16

Total Pages: 222

ISBN-13: 373150605X

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Nuclear fusion is a key technology to satisfy the basic demand for electric energy sustainably. The official EUROfusion schedule foresees a first industrial DEMOnstration Fusion Power Plant for 2050. In this work several high temperature superconductor sub-size cables are investigated for their applicability in large scale DEMO toroidal field coils. Main focus lies on the electromechanical stability under the influence of high Lorentz forces at peak magnetic fields of up to 12 T.

Development of high-temperature superconductor cables for high direct current applications
Development of high-temperature superconductor cables for high direct current applications

Author: Preuß, Alan

Publisher: KIT Scientific Publishing

Published: 2021-01-14

Total Pages: 194

ISBN-13: 3731510413

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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.

Fault Current Limiters
Fault Current Limiters

Author: Mohammad Reza Barzegar-Bafrooei

Publisher: Springer Nature

Published: 2022-02-01

Total Pages: 68

ISBN-13: 9811666512

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This book presents a comprehensive survey of fault current limiters (FCLs) and their applications in power system to cope with the fault current. The book reviews characteristics, technologies, topologies, working principles, applications, and the interaction of FCLs with the power system. In the attempts to develop FCL with close to ideal attributes, academic researchers and companies offer the different configurations that are mostly classified into non-superconducting fault current limiters and superconducting fault current limiters (SFCLs). Both categories are included in this book, and therefore, it can serve as an excellent stepping-stone for senior and/or graduate students who are interested in knowing the reason of the increase in short circuit level in the power system, fault current limitation measures, benefits and drawbacks of the application of FCLs in power systems, the state-of-the-art of fault current limitation techniques, as well as recent advances in this area.

Superconducting Fault Current Limiter: Innovation For The Electric Grids
Superconducting Fault Current Limiter: Innovation For The Electric Grids

Author: Pascal Tixador

Publisher: World Scientific

Published: 2018-12-06

Total Pages: 407

ISBN-13: 9813274387

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This book mainly deals with SuperConducting Fault Current Limiter (SCFCL), mainly the resistive SCFCLs. It aims to further disseminate the technical knowledge of SCFCL in particular to electrical engineers. The SCFCL is a new component and tool to better design and to be used in existing and future electric grids, altering the conventional way of thinking and planning.

Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils
Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils

Author: Gyuráki, Roland

Publisher: KIT Scientific Publishing

Published: 2022-02-24

Total Pages: 194

ISBN-13: 3731510642

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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.

Technology and readout for scaling up superconducting nanowire single-photon detectors
Technology and readout for scaling up superconducting nanowire single-photon detectors

Author: Knehr, Emanuel Marius

Publisher: KIT Scientific Publishing

Published: 2023-03-02

Total Pages: 200

ISBN-13: 3731512564

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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
AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications

Author: Godfrin, Aurélien

Publisher: KIT Scientific Publishing

Published: 2022-05-10

Total Pages: 146

ISBN-13: 3731510960

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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.

Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications
Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications

Author: Buchholz, Alexander

Publisher: KIT Scientific Publishing

Published: 2022-07-27

Total Pages: 246

ISBN-13: 3731511940

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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.