Performance analysis of point of common coupling with bridge type fault current limiter for distribution system

Abstract

This paper studies a performance of Point of Common Coupling (PCC) for distribution network with Bridge type Fault Current Limiter (BFCL). The proposed BFCL is capable of controlling the quantity of fault current in the system. The proposed BFCL is mainly made up of a DC reactor, reversing parallel IGBT for operation of switching and Rectifier Bridge. The BFCL has DC reactor which contains two windings, one is main winding and other is secondary winding. The working approach for two windings is not the same and is distinguished with number of turns. Main winding has higher number of turns with high inductance and secondary winding has less number of turns. The purpose of primary winding in the network is as DC reactor and secondary winding is used for fast comeback of BFCL. The cost and the weight of the DC reactor is partially minimized due to the rapid reaction of the network with BFCL. The overvoltage by the reason of fault conditions on the devices are reduced through BFCL and it can be cost effective because the use of fewer components in the circuit. Systematic way to describe the performance analysis of PCC with BFCL is presented. Simulation studies are done by MATLAB software and results are inspected to demonstrate the ability of proposed BFCL. it is shown from the results that the BFCL can suppress the fault current with minor delay, smoothest the current waveform and improves the quality of the performance.