scholarly journals Protection of MTDC Network Using a Resistive Type Superconducting Fault Current Limiter

2021 ◽  
Vol 23 (6) ◽  
pp. 475-480
Author(s):  
Yacine Ayachi Amor ◽  
Gaëtan Didier ◽  
Farid Hamoudi
Keyword(s):  
Power Transmission ◽  
New Technology ◽  
Circuit Breaker ◽  
System Stability ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Long Distance ◽  
Superconducting Fault Current Limiter ◽  
Resistive Type ◽  
Current Limiter

Multi-terminal DC network (MTDC) offers great potential for long distance huge power delivery with multi-direction power transmission capability. However, the key obstacle in a realization of MTDC is the lack of existing commercial protection device can withstand the DC fault that rises rapidly and surge tenfold within several milliseconds over the whole system. The new technology called Superconducting Fault Current Limiter (SFCL) could bring a solution to the main bottleneck of the MTDC networks. In this work, an electro-thermal model of resistive type SFCL in series with a hybrid DC circuit breaker is proposed to protect a five terminal MTDC network. The numerical analysis carried out using (EMTP-RV®) software, and the simulation results show how effectively the SFCL can reduce the fault current and increase the breaking capability. Moreover, system stability is remarkably improved.

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.

Sign in / Sign up

Export Citation Format

Share Document