Study of Fault Current Limiter—A Survey

The requirement of electric energy is gaining pace in day-to-day life. Due to which, distributed energy source (DES) has been introduced in power sector. But while connecting DES with the distribution network this will increase the fault current level of the system [1]. Many protective devices like high impedance transformer, series reactor, switchgear, etc., are being used to limit the fault current which make the system costlier, cause low dependability and reduced operational flexibility [2]. As these devices are expensive, it is necessary to protect them from fault. A fault current limiter (FCL) is an alternative and flexible means of standard protective device, and it overcomes the problems occur due to increased fault current levels. This paper focuses on different types of FCL and its application in power system which are still in research.