FCL location selection in large scale power system

Maximum short circuit current of modern power system is becoming so large t hat the current should be reduced to make more efficient use of power syste m transmission capability, Fault Current Limiter (FCL) is a promising solut ion of this problem and it can be categorized into two types: constant impe dance type. FCL and current limiting type FCL. Current limiting type FCL su ch as rectifier typo super-conducting FCL (RSFCL) has variable equivalent i mpedance depending on the limit of the current through FCL and power system impedances. In this paper, a method is proposed to incorporate RSFCL into short circuit current analysis, which is needed to evaluate the effectivene ss of FCL installed In a large scale power system, Also, an efficient metho d to find FCL locations suitable for reduction of short circuit currents of more than one fault locations is developed, The efficiency and effectivene ss of these methods are shown by numerical examples.