Proposal for an RMS thermoelectric model for a resistive-type superconducting fault current limiter (SFCL)

Branco, P. J. Costa; Almeida, M.E.; Dente, J. A.

doi:10.1016/j.epsr.2010.04.002

Cited by 15 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the classic magneto-thermal models can result into complicated calculations and long simulation times. Therefore, simplified magneto-thermal models, based on empirical results, have been proposed in [13], [14], or [15].…”

Section: B Magneto-thermal Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Models for Fault Current Limiters based on Superconductor Materials

Etxegarai¹,

Zamora²,

Buigues³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

The present paper introduces the main electric applications of superconducting materials, focusing on Superconducting Fault Current Limiters (SFCL). In recent years, short-circuit current values have increased, mainly due to a higher penetration of distributed generation. Fault Current Limiters (FCL) based on superconductor materials can provide one of the most promising solutions for limiting those fault currents. Nowadays, research focuses mainly on resistive SFCLs, because of size, cost and product maturity. Several modelling approaches for resistive type current limiters, as proposed in the literature, are reviewed hereby.

show abstract

Section: B Magneto-thermal Modelsmentioning

confidence: 99%

“…Finally, the superconducting material returns to the superconducting state with some slope, as indicated by (15).…”

Section: B Magneto-thermal Modelsmentioning

confidence: 99%

Models for Fault Current Limiters based on Superconductor Materials

Etxegarai¹,

Zamora²,

Buigues³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

show abstract

“…The authors explain that the heat initially leaves the superconductor wire by conduction, and then (after approximately 0.35 s) by convection; however, the authors only investigated the conductive period. Hence, a model that accurately represents the recovery of the superconductor should consider both conductive and convective heat transfer; this approach is considered in [BAD10]. An important result from [DYF + 08] is that the proportion of energy that is dissipated into the coolant during a quench lies between 30-60% of the total energy.…”

Section: A6 Thermal-electric Modelsmentioning

confidence: 99%

“…The authors of [BAD10] argue that the superconductor heats up slowly, relative to electrical transients, and therefore the temperature does not need to be updated as often as in other models; however this is not fully justified because the comparison between this model and the experimental results is obscured during the first cycle. Hence, it is difficult to verify whether or not the assumption of an adiabatic system is valid during the initial stages of the fault.…”

Section: A6 Thermal-electric Modelsmentioning

confidence: 99%

Retraction notice to “Analysis of resistive SFCL in a test-bed microgrid” [Ain Shams Eng. J. 6 (2015) 883–892]

Khuntia

Samantaray

2018

Ain Shams Engineering Journal

View full text Add to dashboard Cite

Fault current levels in electrical systems are rising due to natural growth in demand, the increasing presence of distributed generation (DG), and increased network interconnection. This rising trend is expected to continue in the future.Marine vessel power systems are highly power-dense and are often safety-critical.Power system protection is increasingly challenging in these systems. Superconducting fault current limiters (SFCLs) offer an attractive solution to many of the issues faced.This thesis establishes and reviews the state of the art in resistive SFCL technology and application knowledge, and provides crucial research-based guidance for the adoption of resistive SFCLs in future power systems.The issues associated with the application of resistive SFCLs-including location, resistance rating, the recovery period, and interaction with protection systems-are demonstrated. The relationship between several resistive SFCL design parameters is established using a generic analytical approach, hence providing a framework for validating SFCL designs. In particular, it is shown that a particular SFCL resistance rating leads to a peak in the superconductor energy dissipation, which generally should be avoided.It is proven that resistive SFCLs have an inverse current-time characteristic, i.e., they will operate in a time that inversely depends upon the initial fault current magnitude. This knowledge is critical for underpinning the operation of a novel protection scheme using multiple resistive SFCLs. The scheme offers several advantages: very fast-acting operation in response to faults anywhere on the system under study; maximum prospective fault currents are prevented from occurring, reducing the duty on circuit breakers; inherent, fast-acting backup; and communications is not required. It is shown that the scheme is suited to highly-interconnected systems with a high presence of DG. The scheme is readily applicable to the design of future utility and marine vessel power systems.

show abstract

“…High Temperature Superconductor (HTS) fault current limiting concepts have recently been receiving a lot of attention [2][3][4][5][6]. The successful implementation of an HTS saturated core FCL was reported in [7].…”

Section: Introductionmentioning

confidence: 98%