• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2016, Volume: 9, Issue: 7, Pages: 1-7

Original Article

Effect of the Series Resonance LC Tank on the Mitigation of Fault Current in Radial Distribution Networks


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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