Analysis of a flux-coupling type superconductor fault current limiter with pancake coils

Liu, Shizhuo; Xia, Dong; Zhang, Zhifeng; Qiu, Qingquan; Zhang, Guomin

doi:10.1016/j.cryogenics.2017.07.011

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…As for the pancake shape shown in Fig. 6(b), [42], [43] proposed a pancake shape FCL with modularized multiple parallel branches, shown in Fig. 7, which is suitable for HVDC application, while [38], [44], [45] analyzed its feasibility in large dc impulse application as well as electromagnetic, force and recovery features.…”

Section: A Internal Coil Shape Analysismentioning

confidence: 99%

Inductive Fault Current Limiters in VSC-HVDC Systems: A Review

et al. 2020

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Fast emerging fault current levels in high voltage direct current (HVDC) systems has always been a significant obstacle to building a safer and more reliable grid. Inductive fault current limiters (FCLs), compared with its resistive counterpart, are very effective in restricting the fault rising speed that causes major damage during the whole fault process. In this study, a comprehensive review of the methods used for building inductive type FCLs in HVDC systems is presented. The fault current characteristics of the modern HVDC system is discussed to obtain the basic requirements for the FCL. On the basis of different technological domains, various inductive-type FCL topologies and devices are well categorized and analyzed. After the overall discussion and comparison, representative works, as well as new progress and future prospects, are conveyed in detail. One may find the content of this study helpful as a detailed literature review or a practical technical guidance of this field.

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Section: A Internal Coil Shape Analysismentioning

confidence: 99%

Inductive Fault Current Limiters in VSC-HVDC Systems: A Review

et al. 2020

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“…Under specific conditions, employing resistive-type SFCLs can be advantageous for enhancing the transient stability of power systems [10][11] . Inductive SFCLs have also been widely considered [12][13][14] , and have some distinctive merits, including large design flexibility owing to the turn ratio, separation of the current-limiting device from the power transmission line [15] , and low heat loss owing to its very low resistance [16] . A flux-coupling type SFCL has been proposed by our research group [17][18] , corresponding to an inductive and In the normal condition, the switch S 1 is closed, and the SFCL is in the zero-resistance/ superconducting state.…”

Section: Introductionmentioning

confidence: 99%

Current-limiting characteristics of a modified flux-coupling type superconducting fault current limiter and its effects on the transient stability of a multi-machine power system

You

Cao²,

Zheng

2021

Chin. J. Electr. Eng.

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：A modified flux-coupling type superconducting fault current limiter (SFCL) is proposed here for suppressing fault currents. The modified SFCL consists of a coupling transformer, an yttrium barium copper oxide (YBCO) pancake coil, and a controlled switch. By flexibly adjusting the controlled switch's contact states based on the system operational conditions, the coupling transformer's primary inductance as well as the YBCO coil's normal-state resistance are incorporated into the main system for current limitation. Because the modified SFCL has the advantages of resistive and inductive SFCLs, it may improve the power system's transient behavior. Hence, the SFCL's effect on the transient stability of a multi-machine power system was also theoretically investigated. Further, simulations were conducted for accessing the SFCL's performance characteristics under different fault conditions. The results show that using the proposed SFCL can effectively restrain the increased fault current and improve the bus voltage sag; meanwhile, the imitated multi-machine system's power-angle oscillation can be obviously reduced.

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