Carrier Pilot Protection and Microwave Pilot Protection: The problem of providing economically an auxiliary channel by means of pilots for long lines directed attention to carrier techniques. In this case…
Carrier Aided Distance Protection Scheme: The directional comparison carrier pilot relay schemes presently employed are built around standard three-zone step type distance relays. This speeds up fault clearance for internal…
Directional Comparison Carrier Current Protection: The protection operates on the basis of comparison of the fault power flow directions at the two ends of the protected line. Operation takes place…
Carrier Current Protection of Transmission Lines: In modern high-power electrical systems it is necessary to have quick acting protections on long transmission lines. The requirements to be met by such…
Protection of Feeders and Transmission Lines Interview Questions and Answers: 1. What is unit type protection ? Ans. Unit system of protection is one in which the protection responds to…
Feeder Protection Relay Articles: Types of Feeder Protection Relay: A composite transmission system may use one or more of the following types of Feeder Protection Relay. Overcurrent Protection: This is…
Differential Protection Relay in Power System: A Differential Protection Relay in Power System scheme compares quantities derived from the input and output currents of the protected circuit in such a…
Phase Comparison Carrier Protection: The phase comparison pilot-relaying operates on the principle of comparing the phase position of the currents at the two ends of the protected section. The Phase…