WHAT IS PROTECTIVE RELAYING

We usually think of an electric power system in terms of its more impressive partsÐthe big generating stations, transformers, high-voltage lines, etc. While these are some of the basic elements, there are many other necessary and fascinating components Protective relaying is one of these

The role of protective relaying in electric-power-system design and operation is explained by a brief examination of the over-all background. There are three aspects of a power system that will serve the purposes of this examination. These aspects are as follows:

A. Normal operation

B. Prevention of electrical failure.

 C. Mitigation of the effects of electrical failur

Relay 

 

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