Recent Progress of Applied Superconductivity R&D in Korea-Power Technology (original) (raw)

Practical superconductor development for electrical power applications annual report for FY 2005

2006

This is a multiyear experimental research program that focuses on improving relevant material properties of high-T c superconductors (HTSs) and developing fabrication methods that can be transferred to industry for production of commercial conductors. The development of teaming relationships through agreements with industrial partners is a key element of the Argonne (ANL) program.

Practical superconductor development for electrical power applications - annual report for FY 2003

2004

Most large-scale applications of high-critical-temperature superconductors will require conductors that can carry large currents in the presence of applied magnetic fields. This report describes progress at Argonne National Laboratory (ANL) in the research and development of practical superconducting components and devices. These efforts primarily focus on the use of Y-Ba-Cu-O system in second-generation conductors, but they also include investigations of Bi-Pb-Sr-Ca-Cu-O systems for use in first-generation conductors. Results are presented in the areas of processing first-generation superconductors and second-generation (2G) superconductors with several different architectures, applying Raman microscopy to the characterization of 2G conductors, studying the role of oxygen doping in the grain boundary transport of 2G conductors, and evaluating the mechanical properties of 2G conductors.

Electric power applications of superconductivity

Proceedings of The IEEE, 2004

The development of superconducting systems for electric power is driven by the promise of improved efficiency, smaller size, and reduced weight as compared to existing technologies and by the possibility of new applications. Superconducting power components can also contribute to improved power quality and increased system reliability. This paper addresses historical developments and technology status of four superconducting power applications: cables, superconducting magnetic energy storage (SMES), fault-current limiters, and transformers. Today, SMES is the only fully functional superconducting system and it has seen only limited use at grid power levels. A few model or demonstration units exist for each of the other three applications. Superconductivity faces several hurdles on the path to widespread use. Perhaps the most important is the need for operating voltages of 100 kV or more. Though progress in this and other areas has been rapid, considerable development is needed before superconducting devices perform reliably in the utility environment. As a result, today, most initial installations are aimed at niche applications and will be installed where space is limited, where power demands are increasing over existing corridors, and/or where initial development costs can be offset by enhanced power grid performance.

APPLICATIONS OF SUPERCONDUCTIVITY IN ELECTRIC POWER AND TRANSPORTATION SYSTEM

JES Publications, 2020

The generation, transmission and distribution of electric power over a long distance at low losses are the major challenges today. The application of superconducting materials in cables, generators and motors, transformer, dynamic synchronous condenser, fault current limiter and energy storage devices can accelerate development of electric power system. The rapid operation and high efficiency of these devices using superconductors would play a significant role in improving the system performance which is unattainable using copper windings. It is necessary to improve the current carrying capacity and cryogenics of superconducting devices to meet the power system requirement. This paper aims to present remarkable progress of superconducting materials applications in electric power and transportation sector.

Applied Superconductivity in Current and Emerging Technologies

2020

An ever-present phenomenon in usual electrical wires is that they exhibit a resistance to the flow of electric current, producing heat, which means that part of the energy is lost in the process. This is why a computer processor, data centers and big transformers in power stations get hot; and why cooling systems have to be used along. Most materials, copper included, follow this behavior, however there are materials that, under certain conditions, won't exhibit any resistance to the flow of electric current, the so-called superconductors (SC).

Overview of Superconductivity and Challenges in Applications

Reviews of Accelerator Science and Technology, 2012

Considerable progress has been achieved during the last few decades in the various fields of applied superconductivity, while the related low temperature technology has reached a high level. Magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) are so far the most successful applications, with tens of thousands of units worldwide, but high potential can also be recognized in the energy sector, with high energy cables, transformers, motors, generators for wind turbines, fault current limiters and devices for magnetic energy storage. A large number of magnet and cable prototypes have been constructed, showing in all cases high reliability. Large projects involving the construction of magnets, solenoids as well as dipoles and quadrupoles are described in the present book. A very large project, the LHC, is currently in operation, demonstrating that superconductivity is a reliable technology, even in a device of unprecedented high complexity. A project of similar complexi...

High temperature superconductors for power applications

Journal of the European Ceramic Society, 2004

High temperature superconductivity (HTS, discovered in 1986) remains an active area of research worldwide, because its higher T c and, thus, more economical cryogenic cooling have raised the prospects for electric power application. The discovery of MgB 2 has rekindled the search for new superconductors with higher T c . Recently, various acceleration programs have been launched in Europe, USA and Japan. The advance in HTS conductor has enabled the demonstration of various application prototypes, including, power cables, transformers, motors, and fault current limiters. However, full commercialisation of HTS application critically relies on the realisation of HTS conductors that are reliable, robust and low cost with low AC-losses. Worldwide activities are, therefore, focused on developing processing technologies to fabricate the so-called coated conductor based on YBCO to fulfil the stringent specifications. While a high critical current density of around 5 MA/cm 2 (77 K) has been achieved, the conductor cost is currently estimated to be 10-50 times higher than what would be accepted. #