期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：2
页码：1669
DOI：10.15680/IJIRSET.2016.0502094
出版社：S&S Publications
摘要：This paper presents power distribution system with distributed generation (DG) units, its fault currentand induced overvoltage under abnormal conditions should be taken into account severely. In consideration thatapplying superconducting fault current limiter (SFCL) may be a good solution. In this paper, the effects of a voltagecompensation type active SFCL on them are studied through theoretical derivation and simulation. The active SFCL iscomposed of an air-core superconducting transformer and a five level diode converter. The magnetic field in the aircorecan be controlled by adjusting the converters output current, and then the active SFCLs equivalent impedance canbe regulated for current limitation and possible overvoltage suppression. During this process, in view of the changes inthe locations of the DG units connected to the system, the DG unit’s injection capacities and the fault positions, theactive SFCLs current-limiting and overvoltage suppressing characteristics are both simulated in MATLAB. Thesimulation results show that the active SFCL can play a vital role in restraining the fault current and it can contribute toavoiding damage on the relevant distribution equipment and improve the systems safety and reliability.
关键词：Distribution system; Distributed Generation (DG); Short-circuit current; voltage compensation type;active Superconducting Fault Current Limiter (SFCL)
