Generic Model of Three-Phase (RE)BCO Resistive Superconducting Fault Current Limiters for Transient Analysis of Power Systems

Perez-Chavez, Jose Juan; Trillaud, F.; Castro, Luis M.; Quéval, Loïc; Polasek, A.; Andrade, R. de

doi:10.1109/tasc.2019.2891229

Cited by 17 publications

(14 citation statements)

References 28 publications

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“…In the following section, the main characteristics of the thermoelectric model of REBCO technology are introduced. Further details can be found in the following references [ 18 , 37 ].…”

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%

“…This limitation can be overcome either by relating the electrical field E to the current density J covering the creep and flux flow regime of the superconductor as described in [ 38 ] or by combining the resistance of the superconductor derived from ( 1 ) with the equivalent resistance of the metallic layers in the tape. This alternative approach was proposed in [ 18 ] to solve the current sharing between the tape layers during the transition of the superconductor from its superconducting state to its normal-resistive one. Practically, it is carried out using an equivalent parallel resistance circuit model of the tape, assuming that the superconductor’s resistance in its normal state is larger than the combined resistance of the metallic layers.…”

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%

“…Very few measurements on the dependency of the n index on temperature are available [ 29 ]. To include the dependence of the n index on the temperature, the following empirical model was employed [ 18 ],

where

is the reference n index at

.…”

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%

“…The SCC is constituted of series-connected coils made of commercial 2G HTS tapes operated in liquid nitrogen at 77 K. Between the turns in each coil, an insulator guarantees electrical insulation while still providing maximum cooling as proposed in [ 46 ]. For a non-inductive configuration, the winding of a superconducting coil is such that its inductive component is canceled by winding back the tape on itself [ 18 , 47 ]. An additional metallic shunt resistor, which can be either located at room temperature or co-wound with the tape [ 48 ], serves as a bypass to the current during transients.…”

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%

“…It is particularly useful to solve both the heat balance equation and the electric equations under the same framework using nodal analysis coupling thermal and electrical physics of the superconductor. Indeed, an equivalent circuit, for both the electrical and thermal state variables, is built to resolve the temperature and voltage across and along the tape, respectively [ 18 ]. Such a model can be tuned to simulate the physics of the problem with user-defined accuracy while balancing the computational time.…”

Section: Introductionmentioning

confidence: 99%

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Essential Material Knowledge and Recent Model Developments for REBCO-Coated Conductors in Electric Power Systems

2021

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The manufacturing of commercial REBCO tapes, REBCO referring to Rare-earth barium copper oxide, has matured enough to lead to a variety of applications ranging from scientific instruments to electric power systems. In particular, its large current density with a high n index and low hysteresis losses make it a strong candidate for specific applications relying on the dependence of its resistance on current. Despite its advantages, there are still issues that remain to be addressed, such as the scarcity of experimental data for the basic characteristics of the superconductor over a wide range of temperature and applied magnetic field, the homogeneity of these characteristics along the conductor length, as well as the anisotropy of the critical current and n index with respect to the direction of the applied magnetic field. To better utilize the technology, it is therefore sensible to understand the relevancy of these issues so that one could simulate as accurately as possible the physics of the superconductor, at least the dynamics that may impact the correct operation of the superconducting device. There are different levels of modelling to achieve such a goal that can either focus on the performance of the superconductor itself, or on the whole device. The present work addresses some of the latest developments in the modelling of commercial REBCO tapes in power systems with a particular focus on the thermoelectric behavior of superconducting devices connected to external circuits. Two very different approaches corresponding to two different scales in the modelling of superconducting devices are presented: (1) analysis using equivalent models and lumped parameters to study the thermoelectric response of superconducting devices as a whole, (2) Finite Element Analysis (FEA) to compute distributed fields such as current density, magnetic flux density and local losses in tapes. In this context, this paper reviews both approaches and gives a broad variety of examples to show their practical applications in electric power systems. Firstly, they show the relevance of the technology in power systems engineering. Secondly, they allow inferring the necessary level of model details to optimize the operation of superconducting power devices in power grids. This level of details relies completely on the knowledge of some basic measurable properties of superconducting tapes (critical current and n index) and their cooling conditions.

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“…In the following section, the main characteristics of the thermoelectric model of REBCO technology are introduced. Further details can be found in the following references [ 18 , 37 ].…”

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%

where

is the reference n index at

.…”

Section: Modeling Based On Lumped Parametersmentioning

confidence: 99%