Abstract
The detection and discrimination of fault and stressed conditions are more important in the power transmission lines. Generally, fault protection in power systems is done by the distance relay. Based on the measurement of voltage and current at the sending and receiving end of the transmission line the relay operates the circuit breaker. However, the accuracy of fault protection is very low in conventional systems as well as the detection of power systems stressed conditions such as power swing, load encroachment, etc. To solve these issues, fault protection methods using Phasor Measurement Units (PMUs) are analysed. A comparative analysis of conventional distance relays and PMU based distance relay is also presented. A comparative study of DFT based PMU and PLL based PMU for fault protection is performed and results are presented. The study and the results obtained have revealed that the fault protection system with PMU is efficient than the conventional system in terms of accuracy and determination of the fault location.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
