Comparative Analysis on Current Limiting Characteristics of Hybrid Superconducting Fault Current Limiters (SFCLs) with First Half Cycle Limiting and Non-Limiting Operations

Kim, Jin-Seok; Lim, Sung-Hun; Kim, Jae-Chul

doi:10.5370/jeet.2012.7.5.659

Cited by 28 publications

(14 citation statements)

References 14 publications

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“…In order to resolve these problems, several solutions are performed such as separation of bus line, series reactor etc, but these are creating another problems of stability of power system, trustfulness, electrical quality etc. In order to resolve these all problems, an SFCL was suggested and still it's studied continuously [1][2]. Since superconducting element keeps nearly zero resistance, there was no loss.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of the SFCL by turn-ratio of three-phase transformer

Jeong¹,

Choi²,

Jung³

2013

Progress in Superconductivity and Cryogenics

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According to the increase of electric consumption nowadays, power system becomes complicated. Due to this, the size of single line-to-ground fault from power system also increases to have many problems. In order to resolve these problems effectively, an Superconducting Fault Current Limiter(SFCL) was proposed and continuous study has been done. In this paper, an SFCL was combined to the neutral line of a transformer. An superconductivity has the characteristics of zero resistance below critical temperature. because of this, SFCL has nearly zero resistance. so we connecting SFCL to neutral line will not only have any loss in the normal operation but also have the less burden of electric power because of only limiting the initial fault current. We analyzed the characteristics of current, voltage according to the changes of turn ratio of 3 phase system in case of combinations of an SFCL to the neutral line. It was confirmed that the limiting rate of initial fault current by the increase of turn ratio was reduced.

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Section: Introductionmentioning

confidence: 99%

Characteristics of the SFCL by turn-ratio of three-phase transformer

Jeong¹,

Choi²,

Jung³

2013

Progress in Superconductivity and Cryogenics

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“…A hybrid SFCL of the first peak limiting type is proposed in [16] to bypass the HTS to another limiter. The hybrid SFCL consists of a superconducting coil using a HTS material connected in parallel with the CLR, as demonstrated in Figure 2.…”

Section: Hybrid Sfcl Configuration and Thermal-subsystem Characteristicsmentioning

confidence: 99%

Calculation of current limiting reactance of hybrid SFCL for low voltage ride-through capability enhancement in DFIG wind farms

Romphochai¹,

Hongesombut²

2017

Turk J Elec Eng & Comp Sci

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This paper presents a new approach for the low voltage ride-through capability enhancement of doubly-fed induction generator (DFIG) wind farms using a hybrid superconducting fault current limiter (SFCL) of the first peak current limiting type, which has the advantage of a fast recovery time. A design for the hybrid SFCL, focusing on current limiting reactor (CLR) reactance calculation, is proposed in this paper to determine an appropriate value for the CLR reactance that satisfies the grid code requirements of the DFIG wind turbines. High-temperature superconductors (HTS) such as Bi-2212, YBCO, Bi-2223, Ti-2223, and Hg-1223 are investigated for use in the hybrid SFCL. The recovery time and first peak current reduction effectiveness are the criteria for selecting the HTS. In the proposed method, a during-fault voltage from the grid code requirement is used as an input parameter to compute the reactance of the CLR.Based on the results of the base-case simulations conducted on the DIgSILENT PowerFactory software, the Bi-2223 HTS with the first peak of fault current less than 4.5 kA and recovery time of 2.5 s is selected for adoption in the hybrid SFCL. The calculated results of the proposed method are compared with the simulation results of the hybrid SFCL, in terms of the DFIG wind turbine fault ride-through capability enhancement, to demonstrate that the performance of the proposed method satisfies the grid code requirements.

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“…However, when the fault is occurred, it generates arbitrary impedance and limits the fault current. Also, it is recovered to no impedance rapidly after limiting the fault current [1][2][3][4][5][6]. Our research team proposed the transformer type SFCL that merged superconductor to the transformer for power system [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Also, it causes the failure and destruction of the other power apparatus, and brings the economic loss. Therefore, it is necessary to have the alternative reduction of new fault current more systematic and efficient [1][2][3][4][5][6]. Recently various types of Superconducting Fault Current Limiter (SFCL) have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Transient Characteristics of a Transformer Type SFCL Applying the Superconductor and the Normal-conductor into the Secondary Winding

Jung¹,

Choi²

2016

The Transactions of The Korean Institute of Electrical Engineer

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-This paper proposed the structure that applied superconductors to the neutral line of a transformer and applied the normal conductors to the third line. The superconductor applied to the neutral line of a transformer limited the peak value of initial fault current, while the normal conductor finally limited the fault current. In order to secure the operating reliability of transformer type Superconducting Fault Current Limiter (SFCL) of previously proposed structure, we analyzed the operating characteristics according to the fault types. We tested a line-to-ground fault and a line-to-line fault. As a result of the experiment, all the faults showed that the superconductor stably limited the peak-value of initial fault current. Also, the normal conductor finally limited the fault current. Based on this research results, We thought that if the structure of inserting superconductor into the neutral line is applied to the real system, it could improve the reliability and stability of the power system.

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Comparative Analysis on Current Limiting Characteristics of Hybrid Superconducting Fault Current Limiters (SFCLs) with First Half Cycle Limiting and Non-Limiting Operations

Cited by 28 publications

References 14 publications

Characteristics of the SFCL by turn-ratio of three-phase transformer

Characteristics of the SFCL by turn-ratio of three-phase transformer

Calculation of current limiting reactance of hybrid SFCL for low voltage ride-through capability enhancement in DFIG wind farms

Transient Characteristics of a Transformer Type SFCL Applying the Superconductor and the Normal-conductor into the Secondary Winding

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