Fundamentals of Power System Protection

Fundamentals of Power System Protection:

Fundamentals of Power System Protection is given by

Fundamentals of Power System Protection

Bus Zone Protection:

Bus Zone Protection includes, besides the bus itself the apparatus such as circuit breakers, disconnecting switches, instrument transformers …

Differential Protection of Transformers:

Differential Protection of Transformers is the most important type of protection used for internal phase-to-phase and phase-to-earth …

Direct Connected Generator Protection:

Direct connected generators are normally of smaller ratings and a typical scheme of Direct Connected Generator Protection …

Gas Actuated Relays:

Gas Actuated Relays – When a fault occurs inside the transformer tank gas is usually generated, slowly for …

Generator Faults:

Generator faults can be considered under the following heads. (a) Stator Faults: These include the following: Phase-to-earth faults. Phase-to-phase faults. Inter-turn faults. Most faults occur …

Inrush Currents in Transformer:

Magnetizing Inrush Currents in Transformer contain pronounced harmonics but the current during internal fault conditions is sinusoidal. …

Loss of Excitation Protection:

Two distinct effects of Loss of Excitation Protection are that the machine starts drawing magnetizing current of …

Motor Protection:

Motor Protection – There is a wide range of motors in existence for various purposes. However, the fundamental problems …

Overload Protection Relay:

Overload Protection Relay – Continuous balanced overloading of a machine causes overheating in the stator winding. An obvious …

Percentage Biased Differential Relay:

Percentage Biased Differential Relay – In order to avoid undesirable operation on heavy external faults due to …

Prime Mover Protection:

In the event of prime-mover failure the machine starts motoring meaning thereby that it draws electrical power from …

Restricted Earth Fault Protection:

This type of Restricted Earth Fault Protection is provided to detect earth-faults within the protected zone of …

Rotor Protection:

Rotor Protection – As pointed earlier rotor windings may be damaged by earth faults or open circuits. Figure (6.16) …

Star Winding and Delta Winding:

Star Winding and Delta Winding – The magnitude of earth-fault current for a given fault position …

Stator Protection:

Stator Protection – The type of stator faults likely to occur have been discussed already. The earth-fault current is …

Transformer Feeder Protection:

Transformer Feeder Protection – In order to supply bulk power from a major switching station, the transformer is …

Transformer Protection Types:

Nature of Transformer Faults: Power transformers, being static, totally enclosed and oil immersed develop faults only rarely but …

Unbalanced Loading Protection of Generator:

Unbalanced Loading Protection of Generator – Whatever be the cause of the unbalance it is obvious …

Updated: January 28, 2020 — 11:28 pm

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