Indian Journal of Science and Technology
Year: 2016, Volume: 9, Issue: 7, Pages: 1-7
Amir Heidary1 , HamidRadmanesh2*and G. B. Gharehpetian3
1Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran; [email protected] 2Faculty of Engineering, Islamic Azad University Central Tehran Branch, Tehran, Iran; [email protected] 3Electrical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran; [email protected]
*Author for Correspondence
Faculty of Engineering, Islamic Azad University Central Tehran Branch, Tehran, Iran; [email protected]
This paper proposes a novel Fault Current Limiter (FCL)for the application on power systems to control voltage sags at the Point of Common Coupling (PCC) during faults. This new FCL is a resonance transformer, whose primary side is connected to a series capacitor and transmission line. Also, the secondary side of the transformer is switched by a semiconductor device to change the impedance of the primary side of the transformer. The main control component is a fast-closing switch connected in parallel with the secondary side of the transformer, which is driven by the power electronic switch. It can respond within 1 msec. When a fault occurs, the switch closes and bypasses the transformer secondary side and fault currentis limited by the reactor. So, by increasing the existing resonantfrequency,the fault currentis limited. The simulated and experimental results show that it is feasible to develop the FCL with low cost and high reliability. The experimental results show the capability of the proposed FCL, too.
Keywords: Fault Current Limiter (FCL), Point of Common Coupling (PCC), Power Quality, Resonance Transformer
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