Modeling of HTS Applications Using Emtp With Flux-Pinning Scaling Models for Practical HTS Superconductors

Cave, J.R.; Sood, Vijay K.

doi:10.1063/1.2900392

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…EMTP-RV is also a widespread tool used by several utilities around the world. One should note that Hydro-Québec seems to have developed a detailed rSFCL model in EMTP-RV back in 2008 [13], but this model is unfortunately not publicly available.…”

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.

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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.

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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.

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“…In addition, this model has been fully integrated in the EMTP-RV program [12] (version 3.5), a professional power system transient simulator. A similar EMTP-RV model for rSFCLs was developed about a decade ago by Cave and Sood [13] for the internal needs of a Canadian power utility (Hydro-Québec), but details were never disclosed. A more detailed description of these previous works can be found in [14].…”

Section: Towards An Efficient Coupling Between Physical Rsfcl Models ...mentioning

confidence: 99%

“…We assume that the critical current in the tape is equal to I c nom everywhere, except at defect locations. The defects are modeled with equation (13), where…”

Section: Case 1: Rsfcl Made Of 50 M Long Hts Tape With One or Two Hot...mentioning

confidence: 99%

Adaptive multi-scale electrothermal model of REBCO coated conductors embedded in a commercial power system transient simulator

Sosa-Rey

Sirois

Lacroix

et al. 2019

Supercond. Sci. Technol.

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High temperature superconducting coated conductors (CCs) are wires with ideal nonlinear properties for use as resistive superconducting fault current limiters (rSFCLs) for power systems. However, choosing a conductor architecture that can survive all types of excitations occurring in a specific power system is a big challenge. Firstly, the non-uniformity of the critical current along the length of commercial CCs makes them prone to hot spots. Secondly, the current flowing in a CC-based rSFCL is determined by the specific dynamics of the power system in which it is installed. In order to correctly design the CC architecture, one must be able to compute the electrothermal bevahiour of CCs submitted to realistic power system excitations. This requires coupling a physically-representative CC model with a suitable commercial power system simulator. In this paper, an example of such coupling is presented, with the particularity that the numerical method used to simulate CCs can account for realistic lengths used in rSFCLs (hundreds of meters of CCs), while still being able to track hot spot developments on the micrometer scale, thanks to a dynamic adaptive meshing strategy. The coupling is realized within the EMTP-RV environment through a dynamic link library that contains the physical CC model. A few examples of applications are presented, in which propagation of multiple hot spots triggered by the power system are simulated in very moderate computation times. Besides helping rSFCL manufacturers to better select a proper CC architecture, the proposed model can also be used in regular power system simulations as an accurate rSFCL device model, which is expected to greatly help power system engineers to better plan their integration in the grid.

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Coupled Electromagnetic-Thermal Model and Equivalent Circuit of a Magnetic Shield Type SFCL

Morandi

Fabbri

Ribani

2013

IEEE Trans. Appl. Supercond.

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A numerical model of a magnetic shield type superconducting fault current limiter based on an integral formulation of the coupled electromagnetic-thermal problem is presented. A step-by-step linearization of the magnetic problem is introduced in order to solve the system. A simplified equivalent circuit is introduced and implemented inside the Electromagnetic Transient Program power system simulator. The results of the simplified and the full model are compared and the error is evaluated. Index Terms-Coupled problem, Electromagnetic Transient Program (EMTP), equivalent circuit, magnetic shield type fault current limiter (FCL), nonlinear magnetostatics, power system simulator, superconducting fault current limiter (SFCL).

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Modeling of HTS Applications Using Emtp With Flux-Pinning Scaling Models for Practical HTS Superconductors

Cited by 3 publications

References 13 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

Adaptive multi-scale electrothermal model of REBCO coated conductors embedded in a commercial power system transient simulator

Coupled Electromagnetic-Thermal Model and Equivalent Circuit of a Magnetic Shield Type SFCL

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