Methods of Discrimination in Power System Protection: Methods of Discrimination in Power System Protection are basically of two types: those which discriminate as to the location of fault, and those which discriminate as to the…
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…
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…
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…
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…
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…