A novel concept for a fault current limiter

Chong, E.F.H.; Rasolonjanahary, J.-L.; Sturgess, J.P.; Baker, A.E.; Sasse, C.

doi:10.1049/cp:20060051

Cited by 5 publications

(1 citation statement)

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“…The saturated open-core FCL (Moscrop and Darmann, 2009) and the saturated closedcore FCL (Chong et al, 2006;Franco et al, 2011) are two main types of saturated-core FCLs. The saturated open-core FCL needs less core material and can limit larger fault current than the saturated closed-core FCL (Dalibor et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

A novel saturated open-core fault current limiter and its nonlinear magnetic circuit model

2017

COMPEL

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Purpose This paper aims to present a novel energy-efficient saturated open-core fault current limiter (FCL) with special permanent magnet (PM) modules. Design/methodology/approach The special PM modules are used to drive the cores of FCL into a saturated state from different directions in the normal operation condition, reducing the DC current of the saturated open-core FCL. An equivalent magnetic circuit model of the saturated open-core FCL with PM modules is built to calculate the magnetic flux density in the cores of FCL. By applying the modified nodal approach on the circuit, the nonlinear equations of the magnetic circuit can be achieved. The Newton – Raphson method is used to solve the nonlinear equations. The model shows good accuracy verified by finite element simulation and a physical experiment. Findings Compared with the original saturated open-core FCL structure with PMs, the novel saturated open-core FCL structure can save 84% DC power. The physical experiment results show that the saturated open-core FCL has a good performance on limiting the fault current. Originality/value A novel saturated open-core FCL structure with PM modules is proposed in this paper. A physical model of the saturated open-core FCL structure with PM modules is manufactured and tested. About 84% DC power can be reduced by using the PM modules in this saturated open-core FCL, and it can save most of the cost of the saturated open-core FCL.

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Section: Introductionmentioning

confidence: 99%

A novel saturated open-core fault current limiter and its nonlinear magnetic circuit model

2017

COMPEL

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Fault current limiter principle by switching magnetic circuit

Tsukima,

Hatauchi

2024

Electrical Engineering Japan

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Several types of fault current limiters have been studied so far, including superconductor based one or nonsuperconductor based one. However, it is difficult to satisfy all requirements for cost, maintainability, and current limiting performance. This study proposes another type of fault current limiter, variable transformer based one. It is supposed to be less expensive and easier to be maintained since it is based on the conventional transformer, and to be expected better current limiting performance since the magnetic circuit of the transformer is drastically changed. The magnetic circuit of the transformer is switched to be opened and to produce another one by shifting a portion of its iron core mechanically, allowing the primary and secondary electric circuit to be magnetically isolated. In that way, the electromotive force of the secondary winding could be reduced so that the secondary current could be limited. The prototype based on this concept was designed and built up, and its stational performance has been investigated. As a result, it was confirmed that the prototype shows good current limiting performances identical to the results of the previous FE analysis. Furthermore, the prototype was connected to the operating mechanism to investigate the transient performances, and as a result, satisfying current limiting performances are confirmed

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Comparative study on the static and dynamic characteristics of four types of PMFCLs for large capacity applications

Liu

Zou

et al. 2012

International Journal of Electrical Power & Energy Systems

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A novel concept for a fault current limiter

Cited by 5 publications

References 0 publications

A novel saturated open-core fault current limiter and its nonlinear magnetic circuit model

A novel saturated open-core fault current limiter and its nonlinear magnetic circuit model

Fault current limiter principle by switching magnetic circuit

Comparative study on the static and dynamic characteristics of four types of PMFCLs for large capacity applications

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