SERIES TRANSFORMER BASED SOLID STATE FAULT CURRENT LIMITER

Author’s Name : B.JAGADEESH 

Volume 03 Issue 03  Year 2016  ISSN No: 2349-2503  Page no: 15-19

Abstract:

This paper studies a novel transformer-based solid state fault current limiter (TBSSFCL) for radial distribution network application. The proposed TBSSFCL is capable of controlling the magnitude of fault current .In order to control the fault current, primary winding of an isolating transformer is connected in series with line and secondary side is connected to a reactor, parallel with a  bypass switch which is made for anti parallel insulated gate bipolar transistor. By controlling the magnitude of ac reactor current, the fault current is reduced and voltage of the point of common coupling is kept at an acceptable level. Also, by this TBSSFCL, switching overvoltage is reduced significantly. The proposed  TBSSFCL can improve the power quality factors and also ,due to its simple structure ,the cost is relatively low. Laboratory results are also presented to verify the simulation and theoretical studies. It is shown that is TBSSFCL can limit the fault current with negligible delay, smooth the fault current waveform, and improve the power quality.

Keywords:

Series Transformer Based Solid State Fault Current Limiter (TBSSFCL), Power Quality (PQ), Peripheral Integrated Circuit (PIC),Fault Current Limiter (FCL).

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