Development of a high‐performance bridge‐type fault current limiter. Issue 3 (1st March 2014)

• Record Type: Journal Article
• Authors: Ghanbari, Teymoor; Farjah, Ebrahim; Zandnia, Amir
• Is Part Of: IET generation, transmission & distribution. Volume 8:Issue 3(2014)
• Page Start: 486
• Page End: 494
• Publication Date: 2014-03-01
• Subjects: bridge circuits -- fault current limiters -- insulated gate bipolar transistors -- overcurrent protection -- transformers; high‐performance bridge‐type fault current limiter -- BFCL -- transient overcurrent -- load change condition -- fault condition -- switched transformer‐type DC reactor -- transformer secondary side -- insulated gate bipolar transistor -- load suppression -- fault condition -- switched DC reactor -- discharging resistor -- load change -- fault conditions; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2013.0276
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : 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.