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Communication Dans Un Congrès Année : 2015

Comparative study of inductive and resistive SFCLs for various types of short-circuit on meshed and non-meshed HV network

Résumé

A comparative study between inductive and resistive superconducting fault current limiter (SFCL) from current limitation point of view is presented. Different types of fault current limiters are available but the SFCL, thanks to its intrinsic properties, with an extremely non-linear resistivity, can be seen as a natural fault current limiter. At this day, the resistive SFCL (rSFCL) and the inductive SFCL (iSFCL) appear to be the most used in electrical network. Some papers deal with rSFCL and iSFCL but most of them reduce the comparison to the three-phase short-circuit only. However, despite it's one of the most critical case, it is not the most common. For example, if a phase-to-phase short circuit with earth connection occurs close to a transformer with low zero sequence impedance, its amplitude could be higher than the three-phase one. The proposed study, based on symmetrical components, takes into account various fault types (i.e. single line-to-ground fault, line-to-line fault, double line-to-ground fault, three-phase fault) at different locations in meshed and non-meshed HV power system. Comparisons were made by studying the initial symmetrical short-circuit current and the first peak short-circuit current at the fault point and near the fault location (parallel transmission line, generator, …). Various SFCL impedance values and SFCL locations were studied to determine which type of SFCLs is the most effective. In addition, we studied the effects of the power system parameters changes in presence of SFCL (i.e. transformer connection, X/R line ratio). Results show that the rSFCL is the most suitable to limit the first peak of the fault current. About the optimal location the SFCL, we conclude that the transformer feeder is more interesting than the line feeder. In fact, for a power system with parallel transmission lines, we show that a line feeder position induces a significant increase of the current in the healthy line leading to a breaker trip.
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Dates et versions

hal-01197284 , version 1 (11-09-2015)

Identifiants

  • HAL Id : hal-01197284 , version 1

Citer

Gaëtan Didier, Charles-Henri Bonnard, Jean Lévêque. Comparative study of inductive and resistive SFCLs for various types of short-circuit on meshed and non-meshed HV network. EUCAS 2015 - 12th European Conference on Applied Superconductivity, Sep 2015, Lyon, France. p. 171, id. 3A-LS-P-08.x. ⟨hal-01197284⟩
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