Study on Peak Current Limiting Characteristics of a Flux-lock Type SFCL with Two Magnetically Coupled Circuits

Ko, Seok-Cheol; Han, Tae Hee; Lim, Sung-Hun

doi:10.1016/j.phpro.2013.05.028

Cited by 9 publications

(6 citation statements)

References 7 publications

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“…[ [38][39][40][41] Loss Most of them have no loss during normal operation; however, inductive type SFCL has loss in normal operating condition.…”

Section: Items Superconducting Fcl Non-superconducting Fcl Referencesmentioning

confidence: 99%

“…Among several of the SFCLs, the flux-lock type SFCL has less power burden of the high temperature superconducting (HTSC) element [53]. Short circuit current in power system can be limited with the flux-lock type fault current limiter during different contingencies [36,41,53,[84][85][86][87][88]. The configuration of the flux-lock type SFCL with over current relay is shown in the Figure 7 where N 1 , N 2 , N 3 and i 1 , i 2 , i 3 represent coil-1, coil-2 and coil-3 and their currents, respectively.…”

Section: Flux-lock Type Sfclmentioning

confidence: 99%

“…[ 36,41,86,99] Magnetic Shield Starbucks Company is the most widely prolific marketer and retailer of coffee in the world. T company has branches in 75 countries, with more than 254,000 employees.…”

Section: Sfcl Types Advantages Disadvantages Referencesmentioning

confidence: 99%

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Fault Current Limiters in Power Systems: A Comprehensive Review

2018

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Power systems are becoming more and more complex in nature due to the integration of several power electronic devices. Protection of such systems and augmentation of reliability as well as stability highly depend on limiting the fault currents. Several fault current limiters (FCLs) have been applied in power systems as they provide rapid and efficient fault current limitation. This paper presents a comprehensive literature review of the application of different types of FCLs in power systems. Applications of superconducting and non-superconducting FCLs are categorized as: (1) application in generation, transmission and distribution networks; (2) application in alternating current (AC)/direct current (DC) systems; (3) application in renewable energy resources integration; (4) application in distributed generation (DG); and (5) application for reliability, stability and fault ride through capability enhancement. Modeling, impact and control strategies of several FCLs in power systems are presented with practical implementation cases in different countries. Recommendations are provided to improve the performance of the FCLs in power systems with modification of its structures, optimal placement and proper control design. This review paper will be a good foundation for researchers working in power system stability issues and for industry to implement the ongoing research advancement in real systems.

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“…[ [38][39][40][41] Loss Most of them have no loss during normal operation; however, inductive type SFCL has loss in normal operating condition.…”

Section: Items Superconducting Fcl Non-superconducting Fcl Referencesmentioning

confidence: 99%

Section: Flux-lock Type Sfclmentioning

confidence: 99%

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Fault Current Limiters in Power Systems: A Comprehensive Review

2018

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“…To date, VSC-HVDC system stability has been examined with the implementation of different categories of superconducting FCLs (SFCLs) [1,9,31,32]. However, superconducting fault current limiters have several drawbacks such as big size, heavy weight and cost, magnetic field interference with nearby sensitive devices, higher leakage and circulating currents, long recovery time, and loss in stand-by mode [33][34][35][36][37][38][39][40] compared to non-superconducting fault current limiters. Non-superconducting variable resistive bridge type fault current limiters (VR-BFCLs) could restrict the fault current as well as improve transient stability with low cost, loss and voltage drop [24,28,41,42].…”

Section: Introductionmentioning

confidence: 99%

Non-Linear Control for Variable Resistive Bridge Type Fault Current Limiter in AC-DC Systems

2019

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This paper proposes a non-linear control-based variable resistive bridge type fault current limiter (VR-BFCL) as a prospective solution to ease the effect of disturbances on voltage source converter-based high voltage DC (VSC-HVDC) systems. A non-linear controller for VR-BFCL has been developed to insert a variable optimum resistance during the inception of system disturbances in order to limit the fault current. The non-linear controller takes the amount of DC link voltage deviation as its input and provides variable duty to generate a variable effective resistance during faults. The VSC-HVDC system’s real and reactive power controllers have been developed based on a current control loop where direct axis and quadrature axis currents are used to control the active and reactive power, respectively. The efficacy of the proposed non-linear control-based VR-BFCL solution has been proved with balanced as well as unbalanced faults. The results confirm that the oscillations in active power and DC link voltage have been significantly reduced by limiting the fault current through the insertion of an optimum effective resistance with the proposed control technique. The real time digital simulator (RTDS) has been used to implement the proposed approach. The performance of the proposed non-linear control based VR-BFCL is compared with that of traditional fixed duty control.

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“…Recently, our study has reported on the peak current limiting characteristics by suggesting a flux-lock type SFCL that is connected in parallel and has two magnetic paths with structure of having two iron cores [10]. This had been suggested as a measure to improve the fault current limiting effect by preventing the saturation of the iron core with the increased magnetic flux in the internal iron core as the fault current greatly increases simultaneously with the occurrence of the fault.…”

Section: Introductionmentioning

confidence: 99%

Effect of Peak Current Limiting in Series-Connection SFCL With Two Magnetically Coupled Circuits Using E-I Core

Lim

Kim

2016

IEEE Trans. Appl. Supercond.

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In this paper, we proposed a series-connection-type superconducting fault current limiter (SFCL) that can prevent the internal magnetic flux generation of cores during normal operation and prevent the saturation of cores due to a sudden magnetic flux generation at the initial stage of fault occurrence while limiting the peak current. The proposed SFCL does not mediate two cores, as previously reported, but mediates a single E-I core having a configuration of two magnetically coupled circuits using the first, second, and third windings. The other magnetic path is formed by the third coil and the other superconducting element isolated from two coils. Through a short-circuit experiment, we analyzed the operating status of the two superconducting elements and peak current limiting properties according to the amplitude of the fault current before and after the failure. Furthermore, the peak current limiting characteristics according to the winding directions, as well as the current and the voltage of each coil, were compared and analyzed.Index Terms-E-I core, peak current limiting, superconducting element, superconducting fault current limiter (SFCL).

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Study on Peak Current Limiting Characteristics of a Flux-lock Type SFCL with Two Magnetically Coupled Circuits

Cited by 9 publications

References 7 publications

Fault Current Limiters in Power Systems: A Comprehensive Review

Fault Current Limiters in Power Systems: A Comprehensive Review

Non-Linear Control for Variable Resistive Bridge Type Fault Current Limiter in AC-DC Systems

Effect of Peak Current Limiting in Series-Connection SFCL With Two Magnetically Coupled Circuits Using E-I Core

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