Open AccessDevelopment of a high‐performance bridge‐type fault current limiter
Author(s) -
Ghanbari Teymoor,
Farjah Ebrahim,
Zandnia Amir
Publication year - 2014
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2013.0276
Subject(s) - inrush current , fault current limiter , overcurrent , transformer , current limiting , fault (geology) , engineering , resistor , electrical engineering , control theory (sociology) , current (fluid) , computer science , voltage , electric power system , power (physics) , physics , control (management) , quantum mechanics , artificial intelligence , seismology , geology
A new high‐performance bridge‐type fault current limiter (BFCL) is proposed in this study. The proposed BFCL can moderate transient overcurrent in abrupt load change condition and dramatically limit the fault current in fault condition. The key feature of this new BFCL is based on using a switched transformer‐type DC reactor. In fact, the secondary side of the transformer is short‐circuited during normal condition. Therefore, the transformer has negligible effect on the circuit in this condition. When the load current exceeds a predefined threshold (permissible maximum load current), secondary side of the transformer is opened by an insulated gate bipolar transistor. Consequently, inrush current of the load suppresses in abrupt load change condition or the current increases at a constant rate in fault condition. When current exceeds a higher predefined threshold (in the order of fault current), it is limited via the switched DC reactor and a discharging resistor. Analytical analysis of the proposed BFCL is presented in detail. Simulation and experimental results validate the effectiveness of this structure in abrupt load change and fault conditions.