scholarly journals Steady State Current Limiting Characteristics of Fault Current Limiter at Three-Phase Short Circuit Fault in Electric Power System

2003 ◽  
Vol 123 (4) ◽  
pp. 457-465 ◽  
Author(s):  
Hirotaka Shimizu ◽  
Yasunobu Yokomizu ◽  
Masuo Goto ◽  
Toshiro Matsumura
Keyword(s):  
Steady State ◽  
Short Circuit ◽  
Electric Power System ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Three Phase ◽  
Steady State Current ◽  
Current Limiting ◽  
Current Limiter ◽  
Short Circuit Fault

Performance analysis of an open-core type three-phase saturated iron-core superconducting fault current limiter

2020 ◽  
Vol 21 (2) ◽  
Author(s):  
Anirban Upadhyaya ◽  
Debabrata Roy ◽  
Amalendu Bikash Choudhury
Keyword(s):  
Short Circuit ◽  
Iron Core ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Superconducting Fault Current Limiter ◽  
High Magnitude ◽  
Three Phase ◽  
Current Limiter ◽  
Short Circuit Fault ◽  
Open Core

AbstractA very common kind of fault that appear in an electrical power system is the short-circuit fault, which were traditionally handled by the use of protective devices like fuses or circuit breakers which would disconnect the power supply to protect the components of the network. An alternative to these are fault current limiters (FCL), which are protective devices that limit or suppress the high-magnitude currents created during a short-circuit fault, thereby preventing damage to sensitive equipment and also aid in providing uninterrupted power supply to the consumers. A saturated iron-core superconducting fault current limiter (SISFCL) employs the ferromagnetic property of its core material to automatically suppress high-magnitude currents. In this paper, the performance of an open-core type three-phase SISFCL design is evaluated against three different kinds of short-circuit faults. The analysis is performed using finite element modelling (FEM) in the ANSYS Maxwell software environment.

Experiment of a Resistive Superconducting Fault Current Limiter Based on MgB2 under Different Supply Voltages

2013 ◽  
Vol 721 ◽  
pp. 527-530
Author(s):  
Lei Yao ◽  
Jun Mei ◽  
Jian Yong Zheng ◽  
Bin Liu ◽  
You Xu
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Test System ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Voltage Level ◽  
Superconducting Fault Current Limiter ◽  
Current Limiting ◽  
Current Limiter ◽  
Test Result

In order to limit the short-circuit current, and to prevent the power grid and its equipment from the shock of the short circuit, the fault current limiter with detection, trigger and limiting was introduced. A small resistive type superconducting fault current limiter prototype based on MgB2, cooled by liquid helium and heliumgas, was developed and tested by a test system. The test result showed that the prototype based on MgB2 produced superior limiting performance, the short-circuit current suppressing ratio was up to more than 45%, and with the rise of the voltage level, the current limiting capability was also gradually increased, up to 56%.

scholarly journals Analysis on Double Quench and Instantaneous Power of SFCL Using Two Magnetically Coupled Windings According to Winding Direction

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5533
Author(s):  
Seok-Cheol Ko ◽  
Tae-Hee Han ◽  
Sung-Hun Lim
Keyword(s):  
Short Circuit ◽  
Experimental Results ◽  
Iron Core ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Superconducting Fault Current Limiter ◽  
Instantaneous Power ◽  
Proposed Model ◽  
Current Limiting ◽  
Current Limiter

In this study, the characteristics of the double quench and instantaneous power of a superconducting fault current limiter (SFCL) using two magnetically coupled windings were analyzed. In the proposed model of SFCL, two magnetically coupled windings are wound on the iron core and each winding is connected to one superconducting element. When a fault occurs, the SFCL can limit the fault current by the double quench occurrence of two superconducting elements. In order to analyze the influence of the winding direction on the fault current limiting characteristics of the proposed SFCL, two magnetically coupled windings were designed to allow the same and the reverse directions. From the simulated short circuit experiment, the currents and the voltages of two coupled windings and two superconducting elements were measured and the instantaneous power and the double quench occurrence were analyzed. It was confirmed from the experimental results analysis that the fault current limiting characteristics of the SFCL were more favorable in the reverse winding direction than in the same winding direction.

scholarly journals Simulation Test of a DC Fault Current Limiter for Fault Ride-Through Problem of Low-Voltage DC Distribution

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1753 ◽  
Author(s):  
Bing Han ◽  
Yonggang Li
Keyword(s):  
Fault Detection ◽  
Low Voltage ◽  
Short Circuit ◽  
Distribution Network ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Dc Fault ◽  
Fault Ride Through ◽  
Current Limiter ◽  
Short Circuit Fault

The low voltage direct current (LVDC) distribution networks are connected with too many kinds of loads and sources, which makes them prone to failure. Due to the small damping value in the DC lines, the fault signal propagates so fast that the impact current with the wave front of millisecond and the transient voltage pose great challenges for fault detection. Even worse, some faults with small currents are difficult to detect and the communication is out of sync, resulting in protection misoperation. These problems have severely affected the new energy utilization. In view of this, a DC fault current limiter (FCL) composed of inductance, resistance, and power electronic switch was designed in this paper. The rising speed of fault current can be decreased by the series inductance and the peak value of the fault current can be limited by series impedance, thus in this way the running time can be gained for fault detection and protection. For distributed energy access, by deducing the short circuit fault characteristic expression of LVDC distribution network, the feasibility of FCL was verified. Based on the structure of the bridge-type alternating current (AC) current limiter, the structure and parameters of the DC FCL were determined according to the fault ride-through target. Then, a low voltage ride-through strategy based on DC FCL was proposed for the bipolar short-circuit fault of LVDC distribution network. Finally, MATLAB/Simulink simulation was used to verify the rationality of the proposed FCL and its ride-through strategy.

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