NDLI: Cognition on the Current-Limiting Effect of Saturated-Core Superconducting Fault Current Limiter

Content Provider	IEEE Xplore Digital Library
Author	Yuelong Jia Zhengjun Shi Haojun Zhu Li Hao Jun Zou Jiansheng Yuan
Copyright Year	1965
Abstract	The saturated-core superconducting fault current limiter (SCSFCL) is an important facility for limiting the short-circuit fault current of the power grid. However, the cognition or the judgment on the current-limiting effect, which is the key indicator of the SCSFCL, is not unique. This is because the nonlinear property of the steel cores in the limiting state makes the voltage on the SCSFCL and the current passing through the SCSFCL not sinusoidal any more. In this paper, it is presented that the equivalent limiting reactance, which is commonly used currently, cannot reflect the current-limiting effect, nor is the induced voltage. It is pointed out that for a certain SCSFCL, the current-limiting effect is not fixed, and it depends on the parameters of the power grid as well as the position, where the SCSFCL is installed. It is clarified that only the current reduction rate by comparing the short-circuit fault current before and after the installation of the SCSFCL in a certain power grid can correctly reflect the current-limiting effect. Certainly, the calculation for the current-limiting effect must be conducted by the field-circuit coupled method, where the field concerns the property inside the SCSFCL and the circuit concerns the property of the power grid. This paper does not mainly focus on the simulation method, but provides the means of judging or evaluating current-limiting effect of the SCSFCL.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	788504
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Limiting Power grids Fault currents Coils Superconducting transmission lines Fault current limiters High-temperature superconductors superconducting fault current limiter Current-limiting effect saturated core
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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