Electromagnetic and thermal design of superconducting fault current limiters for DC electric systems using superconducting

Qian, Kezhen; Guo, Zhibo; Terao, Yutaka; Ohsaki, Hiroyuki

doi:10.1109/icems.2017.8056509

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…where, Ec is the critical electric field (1 µV/cm), Jc (T) is the critical current density (A/m 2 ) as a function of T, Jc is the critical current density at 77 °K, Tc is the critical temperature (°K), T0 is the first temperature value (77 °K), αx is the time-varying value of the exponential value, α is the superconducting region exponent value, the α value ranges from 5-15 for 1G HTS materials and 15-40 for 2G HTS materials (Xue et al, 2015) (Dutta & Babu, 2014) (Qian et al, 2017).…”

Section: Superconducting Regionmentioning

confidence: 99%

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Improved Recovery Time and Voltage Stability for Resistive Superconductor Fault Current Limiters

Yılmaz

Gençoğlu²

2022

JER is an international, peer-reviewed journal that publishes f

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Fault current levels occurring in power systems force the breaking capacities of the breakers. In the power system elements, the generator, transformer, cables, etc., are exposed to the dangerous effects of fault current until the breaker clears the fault. Various limiting methods have been developed to eliminate this adverse situation in recent years. One of these methods is Superconducting Fault Current Limiters (SFCL). With the discovery of High-Temperature Superconductors (HTS), SFCL's Resistive type has become more popular. Resistive SFCL (R-SFCL), based on the non-linear resistance property of superconducting materials, limits the fault within the first half period. However, it cannot provide such a fast response after the fault. The time required to regain the superconducting state after the fault is the recovery time. For R-SFCL manufacturers, recovery time is a design parameter that must be kept short. This study examines limiting performance, recovery time, and voltage stability with the dynamic model created using MATLAB/Simulink. With the shunt breaker method proposed in the study, the recovery time was shortened, and the voltage stability improved.

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Section: Superconducting Regionmentioning

confidence: 99%

“…where, E0 is the electric field during the transition from the superconducting region to the fluxflow region (V/m) and takes a value between 0.1 and 1 V/m, β is the exponent of the flux-flow region, for both 1G and 2G HTS materials range from 2-4 (Xue et al, 2015) (Dutta & Babu, 2014) (Qian et al, 2017).…”

Section: Flux-flow Regionmentioning

confidence: 99%

Improved Recovery Time and Voltage Stability for Resistive Superconductor Fault Current Limiters

Yılmaz

Gençoğlu²

2022

JER is an international, peer-reviewed journal that publishes f

View full text Add to dashboard Cite

show abstract

“…where Ec is the critical electric field (1 µV/cm), Jc (T) is the critical current density (A/m 2 ) as a function of T, Jc is the critical current density at 77 °K, Tc is the critical temperature (°K), T0 is the first temperature value (77 °K), αx is the time-varying value of the exponential value, α is the superconducting region exponent value, the α value ranges from 5-15 for 1G HTS materials and 15-40 for 2G HTS materials (Dutta & Babu, 2014) (Qian et al, 2017) (Manohar & Ahmed, 2012).…”

Section: Superconducting Regionmentioning

confidence: 99%

“…7)E0 is the electric field during the transition from the superconducting region to the flux-flow region (V/m) and takes a value between 0.1 and 1 V/m, β is the exponent of the flux-flow region for both 1G and 2G HTS materials ranging from 2-4(Dutta & Babu, 2014) (Qian et al, 2017)(Manohar & Ahmed, 2012).…”

mentioning

confidence: 99%

Limitation Analysis of 1st and 2nd Generation Superconductors used in Resistive Superconductor Fault Current Limiters

Yılmaz

Gençoğlu

2022

JER is an international, peer-reviewed journal that publishes f

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Fault currents in power systems force valuable power system elements thermally, dynamically, and electromagnetically until the arc disappears. Installation elements that can withstand fault currents or damage existing components require a high cost. Installing components that withstand fault currents and the damage of fault currents to existing components are costly. Resistive Superconducting Fault Current Limiter (R-SFCL), one of the modern limiting methods, increases the safety and sustainability of the system by eliminating these risks. In this study, a dynamic model was created in MATLAB/Simulink for 1G and 2G HTS used in R-SFCL, and their response to single phase-to-ground fault was observed. According to the simulation results, the most advantageous HTS type for R-SFCL was determined. The fault current level, limitation rate, resistance and temperature values, and response times were compared in terms of limiting performance.

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“…The report suggested that the decarbonisation of the electricity system will require significant investment in the replacing of primary assets and as a result, there appears to be potential in the coming years to replace aging equipment with new, innovative and higherperforming technologies in the strive towards a 'cleaner' and 'smarter' power grid [1]. Interest in the phenomenon of superconductivity and its potential applications in the power sector is growing and has the potential to facilitate the required grid modernization through increasing efficiency and capacity whilst reducing losses and CO2 emissions, as well as improving energy security [2]. There are three inherent characteristics that define a superconductor: [3] • Extremely high current density allows smaller and lighter devices • Zero resistivity below a critical temperature, lowers the losses allowing higher efficiency • An abrupt phase change from superconducting to the 'normal' state can be used to produce dramatic changes in impedance in a fraction of a second.…”

Section: Introductionmentioning

confidence: 99%

Overview and Assessment of Superconducting Technologies for Power Grid Applications

McGuckin

Burt

2018

2018 53rd International Universities Power Engineering Conference (UPEC)

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It is expected that superconducting technologies will play an important role in the future smart grid because their application brings a host of benefits, most notably a decrease power loss that allows for overload relief, the lowering of voltage levels, power quality enhancement and subsequent grid stability. The phenomenon of superconductivity brings these potential qualities to the grid in the form of a number of technologies analogous to the commonly accepted, conventional types in the form of cabling, fault current limiters, energy storage (ES), generators and transformers. This paper aims to provide an overview of these technologies and their current and potential applications.

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Electromagnetic and thermal design of superconducting fault current limiters for DC electric systems using superconducting

Cited by 6 publications

References 18 publications

Improved Recovery Time and Voltage Stability for Resistive Superconductor Fault Current Limiters

Improved Recovery Time and Voltage Stability for Resistive Superconductor Fault Current Limiters

Limitation Analysis of 1st and 2nd Generation Superconductors used in Resistive Superconductor Fault Current Limiters

Overview and Assessment of Superconducting Technologies for Power Grid Applications

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