Scheme of Distance Protection: In developing an overall Scheme of Distance Protection, it is necessary to provide a number of relays to obtain the required discrimination. Modern practice is to…
Fault Resistance Calculation: Fault Resistance Calculation consists of two components, the resistance of the are and the resistance of earth. The second component is present only when it involves an…
Overcurrent Earth Fault Protection: Overcurrent Earth Fault Protection - Earth-fault protection can be provided with normal overcurrent relays, if the minimum earth-fault current is sufficient in magnitude. The magnitude of…
Overcurrent Protection of Feeders: Overcurrent relays offer the cheapest and the simplest protection for lines. The maximum load currents must be known to determine whether the ratio of the minimum…
Comparator Equation in Power System Protection: Comparator Equation in Power System Protection - Taking a very general case to cover the complete range of conventional relay characteristics, let S1Â and S2…
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…
Components of Protection System: Some of the more commonly used Components of Protection System are Relays Circuit Breakers Tripping and Other Auxiliary Supplies Current Transformer (CT) Voltage Transformers (VT) Linear…
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…