Studies of Power System Stability with Superconducting Fault Current Limiters

• Main Authors: Tzu-Han Yeh, 葉子涵
• Other Authors: 曾國雄
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/smaq7m

碩士 === 國立臺北科技大學 === 電機工程系優質電力產業研發專班 === 99 === Along with the significant developments of SFCL in recent years, there are many articles investigating the current limitation capabilities and contributions of SFCL. However, a SFCL may also introduce impacts on power system stabilities. Accordingly, this thesis considers different viewpoints to discuss the influences of SFCLs on a power system. This thesis uses MATLAB/SIMULINK to build a SFCL variable-resistance model and then applies the developed model to various power systems after proper adjusting its parameters. The comprehensive discussions in this thesis include a single machine infinite bus system, a system with two synchronous generators and two parallel transmission lines, and a system with four synchronous generators separated by two parallel transmission lines. The effects of SFCL on the transient stability of a power system are analyzed by the equal-area theory and time-domain simulations. Besides, the effects of SFCL on a traditional wind turbine induction generator in a fault period are also considered. In considering simulation results, a SFCL is able to limit fault currents in a fault period. Moreover, adopting a SFCL can contribute a significant improvement on the transient stability of power systems as well. Finally, some suggestions for using a SFCL on a power system with wind turbine generators are also given.