Design and current-limiting simulation of magnetic-shield type superconducting fault current limiter with high Tc superconductors

Komori, Kazuhiro; Kaiho, K.; Tamada, Noriharu; Onishi, Toshitada

doi:10.1109/20.511423

Cited by 18 publications

(6 citation statements)

References 10 publications

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“…8. Magnetic shield type SFCL (left) and Saturated iron core type SFCL (right) [5,6] reactor is used as the exciting coil, the size and cost of our resistive type SFCL is relatively small.…”

Section: Discussionmentioning

confidence: 99%

Investigation on the characteristics of a high speed repulsion mechanism for wide-range operation of resistive type SFCL

Tan

Yang

Geng

et al. 2014

2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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The fault current in a large-scale power system is higher and difficult for conventional breakers to interrupt it. Resistive type high temperature superconducting fault current limiter (HTSFCL) can reduce fault current and achieve a fast operation which makes it a good supplement for conventional breakers. High speed repulsion mechanism driven by the short circuit current through the parallel reactor was used to drive the vacuum interrupter to cut off the current of superconductor side in 10~15ms to prevent it from destroy. According to this, we did some simulation about the key parameters which may influence its electromagnetic force, velocity and movement. Also, as the short circuit current was different, the velocity and movement of the repulsion mechanism varied a lot. Thus, proper parameters for the design of repulsion mechanism are very necessary for wide-range operation. According to this, we did some experiments to investigate the key parameters and came out with a prototype and succeeded. At last, interrupting test with recovery voltage was done to ensure its wide-range operation ability.

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“…8. Magnetic shield type SFCL (left) and Saturated iron core type SFCL (right) [5,6] reactor is used as the exciting coil, the size and cost of our resistive type SFCL is relatively small.…”

Section: Discussionmentioning

confidence: 99%

Investigation on the characteristics of a high speed repulsion mechanism for wide-range operation of resistive type SFCL

Tan

Yang

Geng

et al. 2014

2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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“…When a short circuit fault occurs, part or even the whole of the system voltage U s is put on the SCFCL, a induced voltage 2 E is produced on the secondary winding, an 2 E can be obtained as followed:…”

Section: Principlesmentioning

confidence: 99%

“…Owing to the screening of the tube, the coupling coefficient between the trigger winding and the other two windings approximates to zero, hence the induced voltage on the trigger winding approximates to zero. Besides with the triac T1 on and the triacT2 off, the secondary winding is directly connected with the trigger winding through T1, and the equivalent circuit is shown in Fig.3, in which the secondary winding is equivalent to be the series of a controlled voltage source 2 E and a inductance 2 L , and the trigger winding to be the series of a controlled voltage source 3 E and a inductance 3 L . As previously stated, during the normal operation, 3 E and 3 L are so small, that the secondary winding could be regarded as to be short-circuited, so the current of the secondary winding can be calculated as followed: Fig.3 Equivalent circuit of the novel SCFCL Furthermore, the short-circuited secondary winding could expel the magnetic flux generated by the primary winding together with the tube, so the magnetic flux generated by the primary winding is confined in the narrow gap between the secondary winding and the tube, making the novel SCFCL negligible in the power system.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the magnetic-shield type fault current limiter (MSFCL) [1][2][3] , and solid state bridge type fault current limiter (SSFCL) [4] have been investigated and considered to be promising candidates for practical applications. Both of them have the excellent current-limiting performance, however, the application of the MSFCL is affected by the unsatisfactory recovery characteristics of the superconductors, which usually take a relatively long time to recover from the non-superconducting state to the superconducting state after a fault clearance [5] [6] , and hence imposes a potential risk on the stability of the power system.…”

Section: Introductionmentioning

confidence: 99%

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Study on novel air-core transformer type SCFCL with a trigger winding

Liu²

2012

2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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This paper proposes a novel air-core transformer type SCFCL with a trigger winding, with the combination of the superconducting tube, air-core transformer ， a trigger winding, and triacs. The trigger winding placed outside the superconducting tube concentrically has negligible inductance because of the magnetic shielding of the superconducting tube, and rather low and unchanged voltage drop during the normal operation stage and appears a large induced voltage close to that on the secondary winding of the air-core transformer when the superconducting tube is quenched during the fault current-limiting stage. As a new type of FCLs, the novel SCFCL has advantages as followed: negligible impedance during the normal operation, instantaneous response to the short-circuit fault, fast recovery, low volume, low weight, and so on. Principles are investigated in detail, and verified by simulation results of the field-circuit coupled FEA method.

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“…1 Introduction Since superconducting fault current limiters (SFCLs) can perform automatic fault current sensing and recovery functions as well as the faster current-limiting operation irrespective of fault types, many researchers have studied the current limiting characteristics of SFCLs and developed various types of SFCLs intensively [1][2][3][4]. The developed SFCLs can be classified into quench type SFLC and nonquench type SFCL [5][6][7][8][9][10][11][12]. In the quench type SFCL, the iterative fault current limiting operations can result in the deterioration of its property due to the repeated quench to the normal conducting state from the superconducting state.…”

mentioning

confidence: 99%

DC dual reactor type superconducting fault current limiter using switching operation of YBCO thin films

Lim¹,

Choi²,

Ko³

et al. 2005

phys. stat. sol. (c)

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PACS 85.25.AmIn this paper, we propose DC dual reactor type superconducting fault current limiter (SFCL) using switching operation of YBa 2 Cu 3 O X-7 (YBCO) thin films. The proposed DC dual reactor type SFCL consisted of a bridge diode, inductively coupled two coils and YBCO thin films. Two coils, each of which was connected in series with an YBCO thin film, were wound in parallel to the opposite winding direction. DC dual reactor type SFCL using the switching operation of YBCO thin films do not require the interrupter and its controller for the detection of the fault current unlike the conventional DC reactor type SFCL. In addition, the magnetic coupling between two coils in the DC dual reactor type SFCL can not only contribute to the equal balancer for currents passing through each coil before a fault accident but also achieve the balanced power burden between two YBCO thin films during a fault time. Through the experiments, the fault current limiting characteristics of the DC dual reactor type SFCL were investigated and its merits were described. 1 Introduction Since superconducting fault current limiters (SFCLs) can perform automatic fault current sensing and recovery functions as well as the faster current-limiting operation irrespective of fault types, many researchers have studied the current limiting characteristics of SFCLs and developed various types of SFCLs intensively [1][2][3][4]. The developed SFCLs can be classified into quench type SFLC and nonquench type SFCL [5][6][7][8][9][10][11][12]. In the quench type SFCL, the iterative fault current limiting operations can result in the deterioration of its property due to the repeated quench to the normal conducting state from the superconducting state. In the non-quench type SFCL, on the other hand, quench generation is not required, which many researchers' attention has been drawn on. However, non-quench type SFCL or bridge type (DC reactor type) SFCL, which generally consists of diode or thyristor bridge and superconducting coil, has disadvantages such as bigger size and higher cost than other type SFCL due to the superconducting coil. In addition, the bridge type SFCL needs a controller and an interrupter for the protection of superconducting coil from a fault accident [10][11][12]. In this work, we propose DC dual reactor type superconducting fault current limiter (SFCL) which consists of a diode bridge, DC dual reactor and high-T C superconducting (HTSC) elements. Unlike the conventional bridge type SFCL, which requires the controller for the operation of the interrupter to prevent the continuous increase of fault current after a fault happens, the proposed DC dual reactor type SFCL can be operated without the interrupter and the controller for its operation. In the proposed DC dual reac-

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Design and current-limiting simulation of magnetic-shield type superconducting fault current limiter with high Tc superconductors

Cited by 18 publications

References 10 publications

Investigation on the characteristics of a high speed repulsion mechanism for wide-range operation of resistive type SFCL

Investigation on the characteristics of a high speed repulsion mechanism for wide-range operation of resistive type SFCL

Study on novel air-core transformer type SCFCL with a trigger winding

DC dual reactor type superconducting fault current limiter using switching operation of YBCO thin films

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