AC distributed power supplies used for solid state short-circuit fault current limiter

2007 ◽  
Author(s):  
Wen Huiqing ◽  
Wen Xuhui ◽  
Lu Zhengyu
Keyword(s):  
Solid State ◽  
Short Circuit ◽  
Power Supplies ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Distributed Power ◽  
Current Limiter ◽  
Short Circuit Fault

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.

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.

scholarly journals Fabrication and Small scale Short Circuit Tests of Hybrid Fault Current Limiter Employing Asymmetric Non-Inductive Coil and Fast Switch

2011 ◽  
Vol 13 (1) ◽  
pp. 41-45
Author(s):  
Jae-Young Jang ◽  
Young-Jae Kim ◽  
Jin-Bae Na ◽  
Suk-Jin Choi ◽  
Woo-Seung Lee ◽  
...  
Keyword(s):  
Short Circuit ◽  
Small Scale ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Current Limiter

scholarly journals Design and computational modeling of fault current limiter topologies

2020 ◽  
Author(s):  
Alexandre Bitencourt ◽  
Daniel H. N. Dias ◽  
Bruno W. França ◽  
Felipe Sass ◽  
Guilherme G. Sotelo
Keyword(s):  
Electric Power ◽  
Distributed Generation ◽  
Distribution System ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Economic Feasibility ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Fault Current Limiters ◽  
Current Limiter

The increase in demand for electric power and the insertion of a distributed generation led to the rise of the short-circuit current in substations. Most of these Brazilian substations were designed decades ago, because of that their equipment may not support the new short-circuit current levels. To protect the installed equipment and avoid excessive costs replacing old devices, it is possible to install Fault Current Limiters (FCLs). This document is a report from an R&D project that evaluated FCL topologies considering real parameters in simulation from used equipment, concluding that the selected FCL topologies accomplished their technical objective. However, before implementing these topologies in the distribution system, one should consider the technical and economic feasibility of using semiconductor switching devices.

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