The Application of Active Superconducting DC Fault Current Limiter in Hybrid AC/DC Power Supply Systems

With the rapid development of DC power grids, the protection of DC power grids is particularly important. Therefore, this paper proposes a kind of DC fault current-limiter with instantaneous by-pass of current-limiting reactance, analyses its working principle and theoretical calculations, and verifies the correctness of its principle through simulation experiments. At the same time, the experimental results show that the current-limiter proposed in this paper can not only instantaneously and greatly limit the fault current when a short-circuit fault occurs in the power grid, but not affect the normal operation of the power grid. A new device is provided for DC gird fault current-limiting protection.

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Research of the Impact Resistance Capability of YBCO Tapes for DC Fault Current Limiter

2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) ◽

10.1109/asemd49065.2020.9276042 ◽

2020 ◽

Author(s):

Zhe Jiang ◽

Zebang Yu

Keyword(s):

Impact Resistance ◽

Fault Current ◽

Fault Current Limiter ◽

Dc Fault ◽

Ybco Tapes ◽

Current Limiter ◽

The Impact

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Active superconducting DC fault current limiter based on flux compensation

Physica C Superconductivity ◽

10.1016/j.physc.2006.04.095 ◽

2006 ◽

Vol 442 (2) ◽

pp. 108-112 ◽

Cited By ~ 12

Author(s):

Jing Shi ◽

Yuejin Tang ◽

Chen Wang ◽

Yusheng Zhou ◽

Jingdong Li ◽

...

Keyword(s):

Fault Current ◽

Fault Current Limiter ◽

Dc Fault ◽

Current Limiter

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

COMPEL The International Journal for Computation and Mathematics in Electrical and Electronic Engineering ◽

10.1108/compel-12-2016-0575 ◽

2017 ◽

Vol 36 (6) ◽

pp. 1739-1749 ◽

Cited By ~ 1

Author(s):

Lei Li ◽

Lin Li

Keyword(s):

Nonlinear Equations ◽

Magnetic Circuit ◽

Physical Experiment ◽

Circuit Model ◽

Fault Current ◽

Fault Current Limiter ◽

Content Type ◽

Dc Power ◽

Current Limiter ◽

Open Core

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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