Simulations of the Recovery Process of an Air-Coil SFCL

Sousa, Wescley Tiago Batista de; Dicler, Felipe; Martins, Flávio Goulart dos Reis

doi:10.1109/tasc.2015.2507128

Cited by 11 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, we believe that the model perfectly answers the needs identified by CIGRE [1], although it is limited for the moment to the modeling of rSFCLs. One should note, though, that it could also be used in inductive SFCL applications relatively easily,as done in [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Multi-scale model of resistive-type superconducting fault current limiters based on 2G HTS coated conductors

Bonnard

Sirois

Lacroix

et al. 2016

Supercond. Sci. Technol.

View full text Add to dashboard Cite

In order to plan the integration of superconducting fault current limiters (SFCLs) in power systems, accurate models of SFCLs must be made available in commercial power system transient simulators. In this context, we developed such a model for the EMTP-RV software package, a power system transient simulator widely used by power utilities. The model can be used with any resistive-type SFCL (rSFCL) made of high temperature superconductor (HTS) tapes, which are discretized in ‘electro-thermal elements’. Those elements consist solely of electric circuit components, and are used to represent portions of tape of various sizes and dimensions (a ‘multi-scale’ approach). Both the electrical and thermal behaviors of the tape are modeled, including interfacial effects, nonlinear properties of materials and heat transfer to the surrounding environment. Such a multi-scale model can simulate accurately both the local quench dynamics of HTS tapes (microscopic scale) and the global impact of the rSFCL on the power system (macroscopic/system scale). In this paper, the model is used to compute phenomena such as propagation velocity of a hot spot and heat diffusion through the thickness of the tape. Results were verified by comparing EMTP-RV results with finite element simulations. In addition to the development of the multi-scale model itself, which is the major contribution of this paper, the use of the model allowed us to determine the conditions of validity of the commonly used ‘homogenization’ of the thermal properties across the tape thickness. Indeed, when the current flowing into the rSFCL is slightly above its critical current Ic (and up to ), very important errors in the power waveforms arise, leading to potentially wrong decisions of protection systems. Homogenized thermal models should thus be used with great care in practice.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-scale model of resistive-type superconducting fault current limiters based on 2G HTS coated conductors

Bonnard

Sirois

Lacroix

et al. 2016

Supercond. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…In order to avoid such long periods of blackouts the HTS cable must be connected in series with a SFCL device in order to avoid high temperatures of the HTS tapes in the cable, which will not recover its superconducting state before the systems starts to operate normally. Besides avoiding high temperature inside the cable, SFCL devices may recover its superconducting state in few milliseconds [53,54] enabling a circuit breaker to be quickly reclosed. In fact, the cable of the AmpaCity project is connected in series with a SFCL device to prevent such issues [14].…”

Section: Resultsmentioning

confidence: 99%

An open-source 2D finite difference based transient electro-thermal simulation model for three-phase concentric superconducting power cables

Sousa

Shabagin

Kottonau

et al. 2020

Supercond. Sci. Technol.

View full text Add to dashboard Cite

Advances in superconductor technology make the prospect of economical operation of high temperature superconducting (HTS) power cables a practical concept for grid applications in urban centers. With more advanced cable designs being developed and commercialized, their geometrical features and dynamic behavior are becoming increasingly complicated to be modeled. This brings new challenges as the complex structure of HTS power cables significantly increases the computation power needed to perform simulations. In this paper we develop a two-dimensional open source simulation code based on the finite difference method which is solved by means of the alternating direction implicit routine. The algorithm has been written in MatLab programming language. The method improves computational performance and simulation time. In addition, this enables the creation of open-source simulation codes. A three-phase concentric HTS cable design has been chosen for the development of the code, nevertheless the model can be employed for any cable design. The results indicate an efficient, stable and powerful simulation code. During the development no numerical instabilities have been found. Besides that, the model is able to deliver quantities that are experimentally difficult to access. Simulation files are available for the scientific community on the HTS Modeling Workgroup webpage. 1 1 Simulation files can be downloaded.here.

show abstract

“…This method is fast and accurate. Studies [20,21] show that the transient behavior of HTS equipment cables could significantly depends on the fault parameters. In this paper, the temperature variation of fault current limiting cable in current limiting process is also studied by thermal-electrical analogy calculation.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Tests of a Fault Current-Limiting-Type Tri-Axial HTS Cable Prototype

Xia

Song

et al. 2022

Electronics

View full text Add to dashboard Cite

Current-limiting superconducting cable uses the quench resistance of superconductor under short-circuit current to improve the short-circuit impedance of the system. In this paper, the design of current-limiting 10 kV three-phase tri-axial superconducting cable is studied. The design methods of cable conductor layer, insulation layer and current-limiting characteristics are given, and one 5 m-long sample is fabricated for testing. The sample is made of stainless-steel-reinforced yttrium barium copper oxide (YBCO) tape, with an expected rated current of 2.5 kA and rated voltage of 10 kV. The test results show that the designed cable can transmit a maximum AC current of 3.0 kA at 77 K. The cable has passed the power frequency withstand voltage, partial discharge and lightning impulse tests. The current limiting characteristics under the action of DC pulse current show that the cable can quickly quench and produce resistance, and the corresponding equivalent resistance value also changes along with current amplitude and duration.

show abstract

Simulations of the Recovery Process of an Air-Coil SFCL

Cited by 11 publications

References 14 publications

Multi-scale model of resistive-type superconducting fault current limiters based on 2G HTS coated conductors

Multi-scale model of resistive-type superconducting fault current limiters based on 2G HTS coated conductors

An open-source 2D finite difference based transient electro-thermal simulation model for three-phase concentric superconducting power cables

Design and Performance Tests of a Fault Current-Limiting-Type Tri-Axial HTS Cable Prototype

Contact Info

Product

Resources

About