Current limiting characteristics of a resistance-inductance type superconducting fault current limiter

Zhang, Jing; Dai, Shaotao; Ma, Tao; Li, Yan; He, Darui

doi:10.1016/j.physc.2022.1354105

Cited by 7 publications

(1 citation statement)

References 22 publications

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“…To this end, a significant effort is underway to understand the underlying mechanisms responsible for the degradation of the current-carrying capacity of superconductors and to design devices for their effective protection and control [12][13][14][15]. Such a promising protective device that takes full advantage of the bistability is the HTSbased fault current limiter in its various configurations (resistive, inductive) which, in the superconducting state, introduces no additional resistive losses to the network, while during fault conditions the transition to normal state increases the line resistance, thus limiting the fault current [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Analysis of High-Temperature Superconducting Current Leads: Multiple Solutions, Thermal Runaway, and Protection

Krikkis¹

2023

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The multiple steady states of Ag/Bi2212-composite high-Tc superconducting leads modeling current delivery to a superconducting magnet have been numerically calculated. The model is based on longitudinal conduction combined with convective heat dissipation from a helium gas stream along the conductor. Because of the nonlinearities introduced by the voltage–current relationship and the temperature-dependent material properties, up to three solutions have been identified within the range of parameters considered. Linear stability analysis reveals that two of them are stable, i.e., the superconducting and the normal branches, while the remaining one is unstable. The limit points separating the stable from the unstable steady states form the blow-up threshold, beyond which any further increase in the operating current results in a thermal runway. Interesting findings are that for low filling ratios no bounded solution exists when the length of the lead exceeds the lower limit point, while very high maximum temperatures may be encountered along the normal solution branch. The effect of various parameters such as the conduction–convection parameter, the applied current, and the reduction in coolant flow (LOFA) on the bifurcation structure and their stabilization effect on the blow-up threshold are also evaluated. Apart from the steady and unsteady operating modes, the multiplicity analysis is also used to identify the range of the design and operating variables where safe operation, with a sufficient margin from the onset of instabilities, may beestablished, thus facilitating the protection of the leads and the device connected to it.

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Section: Introductionmentioning

confidence: 99%

Analysis of High-Temperature Superconducting Current Leads: Multiple Solutions, Thermal Runaway, and Protection

Krikkis¹

2023

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Analytical modeling of fault current limiter with coreless variable series reactor

Amini,

Damaki Aliabad,

Amiri

2023

Electr Eng

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Shortening Recovery Time with Bypass Breaker for Resistive Superconductor Fault Current Limiters

Yılmaz

Gençoğlu

2022

Arab J Sci Eng

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Current limiting characteristics of a resistance-inductance type superconducting fault current limiter

Cited by 7 publications

References 22 publications

Analysis of High-Temperature Superconducting Current Leads: Multiple Solutions, Thermal Runaway, and Protection

Analysis of High-Temperature Superconducting Current Leads: Multiple Solutions, Thermal Runaway, and Protection

Analytical modeling of fault current limiter with coreless variable series reactor

Shortening Recovery Time with Bypass Breaker for Resistive Superconductor Fault Current Limiters

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