scholarly journals A kind of DC fault current-limiter with instantaneous by-pass of current-limiting reactor

2021 ◽  
Vol 256 ◽  
pp. 01028
Author(s):  
Jinyi Deng ◽  
Chen Li ◽  
Junfeng Gao
Keyword(s):  
Power Grid ◽  
Power Grids ◽  
Normal Operation ◽  
Fault Current ◽  
Fault Current Limiter ◽  
New Device ◽  
Dc Power ◽  
Dc Fault ◽  
Current Limiting ◽  
Current Limiter

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.

scholarly journals Analysis of the DC Fault Current Limiting Characteristics of a DC Superconducting Fault Current Limiter Using a Transformer

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4210
Author(s):  
Kang-Cheol Cho ◽  
Min-Ki Park ◽  
Sung-Hun Lim
Keyword(s):  
Circuit Breaker ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Long Distance ◽  
Superconducting Fault Current Limiter ◽  
Dc System ◽  
Dc Fault ◽  
Current Limiting ◽  
New Type ◽  
Current Limiter

Recently, a lot of interesting research has been conducted to solve the fault current problem of the DC system. In long-distance transmission, DC transmission is more economical than AC transmission. The connection of power grids with a DC system can also better control the power flow and provide high stability. However, the control of the fault current in a DC system is more difficult to handle than in an AC system because the DC system does not make a zero point, unlike the AC system. In addition, there is a disadvantage, in that an arc occurs when a circuit breaker operates. In this paper, a new type of DC superconducting fault current limiter (SFCL) is proposed. This new type of SFCL is composed of two superconducting elements, a current limiting resistor/reactor (CLR), and a transformer. With the proposed SFCL, the DC fault current limiting experiments were performed and the DC fault current limiting characteristics of this SFCL due to the component of the CLR were analyzed.

ASSiST - a Superconducting Fault Current Limiter in a Public Electric Power Grid

2021 ◽  
pp. 1-1
Author(s):  
Hans Peter Kraemer ◽  
Anne Bauer ◽  
Michael Frank ◽  
Peter Van Hasselt ◽  
Peter Kummeth ◽  
...  
Keyword(s):  
Electric Power ◽  
Power Grid ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Superconducting Fault Current Limiter ◽  
Electric Power Grid ◽  
Current Limiter

Active superconducting DC fault current limiter based on flux compensation

2006 ◽  
Vol 442 (2) ◽  
pp. 108-112 ◽  
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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