Dynamic Inductance in Saturated Cores Fault Current Limiters

Nikulshin, Yasha; Wolfus, Y.; Friedman, A.; Yeshurun, Y.

doi:10.1007/s10948-014-2717-7

Cited by 12 publications

(7 citation statements)

References 6 publications

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“…In [15] we demonstrated methods for finding the curves L fcl (I) experimentally and by FEM simulations, both providing similar results. Using such methods for extracting the L fcl (I) curve for an SCFCL with one variable parameter allows studying the effect of this parameter on the SCFCL when installed in the grid.…”

Section: Methodsmentioning

confidence: 68%

“…For short coils the B profile exhibits a narrow well form and it expands towards the edges of the core with increasing current. For the 1 cm coil the core section beneath the coil is fully desaturated, the inductance continues to grow with current due to growing ECL and the decreasing internal demagnetization factor [15]. For the 29 cm coil at 20 A almost the entire core is desaturated leading to larger inductance change.…”

Section: Resultsmentioning

confidence: 99%

“…The voltage drop on the SCFCL showed 0.77% for nominal current, less than the typical 1% insertion impedance requirement. Detailed measurement procedure is described in [15]. During fault, the voltage drop becomes significant part of total grid voltage.…”

Section: Resultsmentioning

confidence: 99%

“…Simulations of performance of this model are compared with measurements of a laboratory scale model with constant coil length. The method for extracting L(I) and its use for predicting the full voltage waveform at any given operating conditions is described in a previous work [15]. The SCFCL is characterized by its resistive and inductive components of impedance when installed in a grid: R grid and L grid .…”

Section: Introductionmentioning

confidence: 99%

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Improving the Performance of Saturated Cores Fault Current Limiters by Varying Winding Density in the AC Coils

Nikulshin

Wolfus

Friedman

et al. 2015

IEEE Trans. Appl. Supercond.

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Effect of the winding density in the AC coils on the performance of a saturated cores fault current limiter (SCFCL) has been studied, exploiting Finite Element Analysis. For a given design, a fixed number of turns was concentrated at the center of the AC coils limb, resulting in high windings density. The coil length was then increased gradually along the limb, decreasing the winding density and therefore decreasing the coil impedance. However, we found that the ratio between the fault to nominal state impedances increases with decreasing winding density. The results are discussed and explained as originating from the change in the flux linkage of windings in the coil for various core states. In the nominal-state of the SCFCL, the core is saturated and the coupling between the windings is lower, given the lower winding density. However, when the core is desaturated during a fault, the magnetic interaction of the windings with the core strengthens, the coupling between the windings increases and contributes to higher fault-state impedance. Thus, reducing the winding density may serve in increasing the impedance ratio of the device and improving the performance of SCFCLs. The results suggest that the windings density in SCFCLs should be used as a significant design parameter.

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Section: Methodsmentioning

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving the Performance of Saturated Cores Fault Current Limiters by Varying Winding Density in the AC Coils

Nikulshin

Wolfus

Friedman

et al. 2015

IEEE Trans. Appl. Supercond.

Self Cite

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“…With the aim of improving the clipping factor of the SCFCL and reduce the number of the DC bias coil, Nikulshin et al [29] proposed a new topology known as the open‐closed SCFCL, whose DC magnetic circuit is closed while AC magnetic circuit is open. The open‐closed SCFCL, illustrated in Fig.…”

Section: Classification Of Scfclsmentioning

confidence: 99%

Saturated‐core fault current limiters for AC power systems: Towards reliable, economical and better performance application

et al. 2020

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With the continuous expansion of power grid capacity, the problem of short‐circuit current exceeding the standard is becoming increasingly serious. Fault current limiter is a promising solution and is gradually becoming a research hotspot. In this study, fault current limiters are classified into four categories. And saturated‐core fault current limiters are emphatically introduced, including its working principle and comparison with the other three categories. Saturated core fault current limiters are divided into four branches according to the ways leading the core saturated. A comprehensive review of the research activities and emerging technologies of saturated‐core fault current limiters for AC power systems is presented in this study. The working principle and typical structure of DC‐biased‐, permanent‐magnet‐, superconducting‐ and hybrid‐type saturated‐core fault current limiters are introduced. The advantages and disadvantages of four types of saturated core fault current limiters are compared in detail from the aspects of current‐limiting performance, iron core size and DC magnetomotive force. Real grid application examples of some types of devices are presented, as well as new progress in the techniques, are covered and discussed in detail. One may find the content of this study helpful as a detailed literature review or as practical technical guidance.

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The Saturated Core Fault Current Limiter in Modern Power Systems—A Laboratory Model Test Results

Naphade¹,

Naphade²,

Ghate³

2022

Smart Technologies for Energy, Environment and Sustainable Development, Vol 1

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Dynamic Inductance in Saturated Cores Fault Current Limiters

Cited by 12 publications

References 6 publications

Improving the Performance of Saturated Cores Fault Current Limiters by Varying Winding Density in the AC Coils

Improving the Performance of Saturated Cores Fault Current Limiters by Varying Winding Density in the AC Coils

Saturated‐core fault current limiters for AC power systems: Towards reliable, economical and better performance application

The Saturated Core Fault Current Limiter in Modern Power Systems—A Laboratory Model Test Results

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