What are the essential components of a protective relay?

What are the essential components of a protective relay? The essential components of a protective relay are the following: 1.       Sensing element. 2.       Comparison element. 3.       Control element   Related…

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What is a protection relay?

    What is a protection relay?     Protection relay is an electrical device used to sense an abnormal condition in a power system and operate a circuit breaker…

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Which is the most efficient electrical machine?

The most efficient electrical machine is the transformer. Transformers have efficiency above 95%. The autotransformer has an efficiency of close to 98%. The maximum efficiency is achieved under the fully…

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What are the different faults occurring in the overhead transmission lines?

What are the different faults occurring in the overhead transmission lines?

1.       Single line to ground fault.

2.       Line to line fault.

3.       Double line to ground fault.

4.       Line to line to line fault (Three phases are short-circuited)

5.       Three line to ground fault. (more…)

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What is short circuit?

A short circuit is a situation in which two or more different lines (having different voltage levels/ different phase/ different terminals) come in contact and finally leads to the flow…

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Comparision of conventional energy resources

Conventional energy is obtained from the conventional energy resources such as coal, diesel, gas and nucleus. These are non-renewable resources and may exhaust in few decades if consumed at the current rate. The burning of fossil fuels produces harmful gases such as nitrous oxide, carbon monoxide, sulphur-di-oxide etc and pollutes the environment. The comparison of various factors of power production from the conventional resources is listed below. (more…)

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