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…
Selection of Distance Relay: The factors to be considered for the Selection of Distance Relay scheme can be enumerated as follows: Speed of operation. Measuring relay characteristics. Fault coverage. Economic…
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 of two types: (i)…
Differential Relay Application: The principle of operation depends on a simple circulating current principle where the difference of the currents of the two CTs flows through the relay under normal…
Distance Relays Types and their Applications: In applying relays to a transmission system it is necessary to state the relay characteristic in the same terms that the system conditions are…
Important Questions in Electrical & Electronics: IMPORTANT QUESTIONS OF AC DISTRIBUTION IMPORTANT QUESTIONS OF CIRCUIT BREAKERS IMPORTANT QUESTIONS OF DC DISTRIBUTION IMPORTANT QUESTIONS OF DISTRIBUTION SYSTEMS IMPORTANT QUESTIONS OF ECONOMICS…
Derivation of Single Phase Quantity from Three Phase System: It will be seen later that auxiliary channels or pilot wires are used to transmit information from one end of the…
Important Questions of Unsymmetrical Fault: 1. What is a 3-Φ unsymmetrical fault ? Discuss the different types of unsymmetrical faults that can occur on a 3-Φ system. 2. Discuss the…
