Analysis of the effect of a saturable-core HTS fault current limiter on the circuit breaker transient recovery voltage

Lopez-Roldan, J.; Price, A. C.; Rosa, F. de la; Moriconi, Franco

doi:10.1109/pes.2011.6039914

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…There are various devices for the fault current limitation including superconductor resistance [1–3], series reactor [4, 5], IS limiters, flexible AC transmission systems (FACTS) [6–9], positive temperature coefficient [10], inductive core saturation FCLs [11–18], power electronic‐based FCLs [19–21], and series resonant limiter. Most of these devices are expensive and not affordable.…”

Section: Introductionmentioning

confidence: 99%

Optimal design and analysis of a variable reactor fault current limiter

Aliabad

Zarchi

2017

IET Electric Power Applications

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Development of power networks increases short circuit level and makes use of fault current limiters (FCLs) inevitably. FCLs should have low impedance in the normal condition of the network and high impedance quickly after the short circuit. For this purpose, a variable reactor has been proposed. In this scheme, the reactor impedance is dependent on the reactor air gap. In the normal condition, the reactor has a large air gap and has low impedance. When a fault occurs and the current increases immediately, a strong force is produced between the fixed and moving parts of the reactor and the air gap is decreased. This leads automatically to an increase in the reactor impedance. After the fault is cleaned, the reactor returns to its previous state by a spring and is recovered easily. An optimal design has been performed here to reach the FCL with desirable performance. To this end, analytical relations of the reactor are implemented and the optimum values are calculated by using genetic algorithm. The designed reactor has been simulated by the finite‐element method to verify the analytical calculations. The results confirm the proposed scheme and indicate that the reactor limits the fault current very well.

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Section: Introductionmentioning

confidence: 99%

Optimal design and analysis of a variable reactor fault current limiter

Aliabad

Zarchi

2017

IET Electric Power Applications

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“…The application of Superconducting Fault Current Limiters, SFCLs, in power networks is very fascinating due to their remarkable technical performance [1][2][3][4]. Various designs have been proposed and tested so far [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…During the fault condition, the ampere-turns balance fails to be satisfied between the superconductor cylinder and the copper winding and the magnetic flux penetrates the core. Consequently, the impedance seen from the primary winding rapidly increases and the fault current is limited [2], [21]. The short circuit levels in various locations of power networks are increasing due to the growing demand and the introduction of distributed generations.…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Design of Tunable Shield-Type Superconducting Fault Current Limiter

Hekmati

2015

IEEE Trans. Appl. Supercond.

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The shield type superconducting fault current limiters, due to their outstanding advantages, form an important category of SFCLs. Tunable shield type SFCL, is a novel device which introduces the extra advantage of controllable fault current limitation. As different limitation currents may be required in a voltage level of the power system, the tunability characteristic, besides the unification of devices, may eliminate the need for multiple SFCLs in power substations and result in reduction of total initial and operational costs. In this paper, basic relations governing the operation of the novel tunable shield type SFCLs are presented and target functions are defined which have the most impact on the cost, weight and performance of the device, such as the volume of copper, iron and superconductor, the maximum control voltage source and the ohmic resistance and leakage reactance of primary winding. A heuristic method has been proposed for multi-objective design of tunable SFCL where weight coefficients are defined to choose the importance degree of each target function. Eight cases have been studied with various weighting coefficients the variation of the target functions are compared in these cases. The outputs of the optimization flowchart for one of the cases have been used for the fabrication of a prototype which has shown satisfactory tunable characteristic in limitation current. The experimental test results have shown good compatibility with the theoretical results.

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