Basic Ideas of Protection Relay: Basic Ideas of Protection Relay should ensure the availability of electrical energy without interruption to every load connected to the system. When the electric power supply is extended to remote villages the power system would consist … (Read More)

Fault Meaning and Statistics: Fault Meaning and Statistics – It is useful to have some idea of the frequency of the incidence of faults on the different items of equipment in a power system. This information is of help in considering the problems … (Read More)

Zone Protection: The Zone Protection is that part of a power system guarded by a certain protection and usually contains one or at the most two elements of the power system. The zones are arranged to overlap so that no part … (Read More)

Essential Qualities of Protection Systems: Every Protection Systems which isolates a faulty element is required to satisfy four basic requirements: reliability; selectivity; fastness of operation; and discrimination. Without reliability and selectivity the protection would be rendered largely ineffective and could even become … (Read More)

Basic Principle of Operation of Protective System: Basic Principle of Operation of Protective System – Each relay in a protection scheme performs a certain function and responds in a given manner to a certain type of change in the circuit quantities. … (Read More)