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Monthly Archive for: «December, 2016»

Four essential ingredients of an electrical power system

Electrical power system Generally speaking, you must agree that electrical power system is a complex project consisting of the four main ingredients. Now, let’s observe each ingridient in details: Electricity supply Transmission Distribution Loads… Read more

Dec 30, 2016 | Edvard

Four essential ingredients of an electrical power system

Fundamental overcurrent, distance and differential protection principles

Essential protection principles This technical article covers the four fundamental protection principles: Principle of overcurrent protection Principle of directional overcurrent protection Principle of distance protection Principle of differential protection For transmission line For transformer For… Read more

Dec 26, 2016 | Edvard

Fundamental overcurrent, distance and differential protection principles

The basic calculation of transmission line protection

Transmission line protection The excessive currents accompanying a fault, are the basis of overcurrent protection schemes. For transmission line protection in interconnected systems, it is necessary to provide the desired selectivity such that relay… Read more

Dec 16, 2016 | Edvard

The basic calculation of transmission line protection
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