scholarly journals Effects of Magnetic Fields on Quench Characteristics of Superconducting Tape for Superconducting Fault Current Limiter

2019 ◽  
Vol 9 (7) ◽  
pp. 1466
Author(s):  
Bin Xiang ◽  
Lei Gao ◽  
Muhammad Junaid ◽  
Zhiyuan Liu ◽  
Yingsan Geng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Short Circuit ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Superconducting Tapes ◽  
Permanent Magnetic Field ◽  
Superconducting Fault Current Limiter ◽  
Fault Current Limiters ◽  
Ybco Tapes

In DC systems, DC resistive type superconducting fault current limiters (R-SFCLs) can respond within a few hundred milliseconds and limit the fault current to a very low level to protect the power equipment in DC systems. The main part of R-SFCLs are superconducting tapes. When short-circuit faults occur in the system, the superconducting tapes will quench and become a large quenched resistor to limit the fault current. The surrounding magnetic fields and the magnetic fields caused by the superconducting tapes itself influence the quench characteristics of the superconducting tapes of R-SFCLs. Thus, the current limiting characteristics of R-SFCLs will also be affected. Until present, very few studies have investigated the effects of magnetic fields on quench characteristics of superconducting tapes for DC R-SFCL. The objective of this paper is to obtain the effects of magnetic fields on quench characteristics of superconducting tapes for DC R-SFCL. Two different kinds of YBa2Cu3O7-δ (YBCO) tapes are studied under a permanent magnetic field of 0, 42.4, 75.9, 122.9 mT, respectively. One is from Shanghai Superconductor Technology Co., Ltd., Shanghai, China, type ST-12-L (named SC_SH) and the other is from American Superconductor Inc. Boston, MA, USA, type 8602 (named SC_8602). The research results show that the magnetic fields influence both the amplitude and the rising rate of the quenched resistance of an SC_SH tape. Under the same magnetic field, both the speed of quenching and the quenching resistance of SC_SH tape are larger than them of SC_8602 when the prospective current exceeds 800 A. Thus SC_SH tape can limit the fault current faster and to a lower level.

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.

Modeling Analysis of Impedance Characteristics of Saturated Core Superconducting Fault Current Limiter

2013 ◽  
Vol 389 ◽  
pp. 1089-1095
Author(s):  
Jun Zhen Peng ◽  
Kun Nan Cao ◽  
Da Da Wang ◽  
Meng Song ◽  
Nan Nan Hu ◽  
...  
Keyword(s):  
High Voltage ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Element Analysis ◽  
Superconducting Fault Current Limiter ◽  
Saturation Properties ◽  
Modeling Analysis ◽  
Current Limiter

As one of the most applicable to high-voltage network superconducting fault current limiterSCFCL(saturated core superconducting fault current limiter) ,which use of core saturation properties can be achieved the current-limiting function without delay ,will be the most widely applied in the future,By analyzing the working principle of SCFCL,this paper use of PSCAD and finite element analysis software Ansoft to build the 500kV\/3150A grade SCFCL model and accurate calculation coil self-inductance and mutual inductance, the harmonic of each size and analyzed its Impedance characteristic on the different external parameters,The results show that SCFCL has a excellent performance for high voltage power network short-circuit current limitation, and provides important reference for design.

scholarly journals Analysis of Superconducting Fault Current Limiter in DC System with Renewable Energy Sources

2017 ◽  
Vol 6 (1) ◽  
pp. 64
Author(s):  
S. Sanjeeva Rayudu ◽  
C. Ganesh ◽  
B.Vignesh Naik
Keyword(s):  
Renewable Energy ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Superconducting Fault Current Limiter ◽  
Fault Current Limiters ◽  
Flow Through ◽  
Current Limiter

<p>Superconducting fault-current limiters (SFCLs) have been the subject of research and development for many years and offer an attractive solution to the problem of rising fault levels in electrical distribution systems.  SFCLs can greatly reduce fault currents and the damage at the point of fault, and help improve the stability of a power system. Superconducting fault-current limiters (SFCL) provide a  new efficient approach to the reliable handling of such  faults.(SCFLs) can be used for various nominal voltages and currents, and can  be  adapted  to  particular  limiting  characteristics  in  case  of  short  circuits. In this project, dc resistive type superconducting fault current limiter (SFCL) is presented. This SFCL is designed for the HVDC system.  Uniform current and voltage sharing among the SFCL modules can be observed through contact resistance tests, dc flow-through tests, and ac flow-through tests. Results of tests show that each limiting module has good uniformity in higher current system. The proposed concept can be implemented using renewable energy sources. The results are presented by using Matlab/simulink platform.</p>

scholarly journals Application of Superconducting Fault Current Limiter in Power Grid - Survey

2020 ◽  
Vol 6 (1) ◽  
pp. 1-4
Author(s):  
Vipul Sharma ◽  
Mrs. Madhu Upadhyay
Keyword(s):  
Short Circuit ◽  
Circuit Breaker ◽  
Energy Sources ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Distributed Energy ◽  
Superconducting Fault Current Limiter ◽  
Electric Equipment ◽  
Generation Capacity ◽  
Current Limiter

Introduction of Distributed Energy Sources (DES) is the highest change happening to the distribution network. This paper describes different types of current limiting methods which reduce the magnitude of the fault current. The interconnected distributed energy sources to the conventional grid improves the power generation capacity of the power system but also increases the magnitude of fault current which cannot tolerate by the short-circuit ratings of the circuit breaker, relays, isolator etc. This paper reviews on the innovative electric equipment i.e. Superconducting Fault Current Limiter (SFCL), which reduces fault current magnitude in first cycle of fault current. Keywords: Distributed Energy Sources, Fault current, Superconducting Fault Current Limiter (SFCL), Protection Equipment.

scholarly journals Composite Heat Sink Material for Superconducting Tape in Fault Current Limiter Applications

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1832
Author(s):  
Marcela Pekarčíková ◽  
Jozef Mišík ◽  
Marian Drienovský ◽  
Jozef Krajčovič ◽  
Michal Vojenčiak ◽  
...  
Keyword(s):  
Mechanical Stability ◽  
Maximum Temperature ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Superconducting Tapes ◽  
Ceramic Filler ◽  
Superconducting Tape ◽  
Fault Current Limiters ◽  
Current Limiter ◽  
Composite Heat

We enhanced the performance of superconducting tapes during quenching by coating the tapes with various composites, with regards to the application of such coated systems in superconducting fault current limiters. In composition of the coating, we varied the type of epoxy matrix, the content of ceramic filler particles and the use of reinforcement in order to optimize the thermal and the mechanical stability of the coated tapes. By this way modified superconducting tapes were able to reduce the maximum temperature 170 °C of not modified superconducting tape to 55 °C during the quench with electric field up to 130 V m−1.

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