Fault Current Limiters

In a modern power system, the increasing rate of energy demand requires development of generation and transmission systems. As an unwelcome consequence of generation and transmission systems development, Fault current levels are increasing day-to-day. Many utilities, all over the world, are experiencing the problem of astonishing fault Current levels.

Increase in fault current level causes undesired consequences such as unacceptable thermal electro-dynamic stresses, equipment damage, and safety problem to personnel etc. Large fault currents can cause the grid to fail catastrophically. Even small rise in fault currents can damage the grid's capital infrastructure such as performance degradation and premature failures.

Present fault current mitigation techniques are expensive (like splitting bus, Current Limiting Reactors, etc.,) limit grid operation and efficiency. Fault current Limiters can help the utilities to overcome these problems. The Fault current Limiter (FCL) decouples the Fault Current from the delivery of high quality power. This decoupling gives new flexibility to the Utility in terms of expansion of Substation and greater interconnectivity & reliability.