Protection of interconnected transmission network using phasor measurement unit scheme

The demand of load is increasing everyday but the transmission resources are very limited because of various challenges and constraints faced during power system monitoring. This insufficiency of transmission resources had lead to reduced operational margins for power system operators. Further due to this heavy loading the stability limit has reached it maximum value. Therefore this issue of deregulation has lead for the development of wide monitoring, protection and control rather than traditional scheme. This paper proposes an adaptive protection scheme which is based on phasor measurement unit (PMU) for the protection of power system network. Here positive sequence voltage and currents of transmission lines are used to identify the location of fault. The fault location is located at maximum speed and accuracy with the help of PMU’s placed over a wide area transmission network. This paper shows results of IEEE 5 bus system which is been simulated on MATLAB/SIMULINK platform for various fault conditions.