A Reducing Transmission-Line Fault Current Method

In this paper, a reducing transmission-line fault current method with capacitor compensators is proposed to limit the transmission-line fault current in power systems. In the normal mode of operation, the shunt capacitors banks as reactive power compensators that delivers reactive power to increase the power factor and used on medium-length and long transmission lines to increase line loadability and to maintain voltages near rated values. Their important effect is to reduce line-voltage drops and to increase the power factor and the steady-state stability limit. When faults states occurs, the capacitor another effect is to reduce transmission-line fault current peak value. Simulations performed in MATLAB/Simulink environment indicate that the proposed performance for capacitor compensators performs well to limit the fault currents of transmission lines and line-voltage drops.