Reliability Evalution with Effefts on System Parameters Incorporating Facts Devices

A modern power system is highly integrated and is usually very large and complex. The power systems which are having shortage of reactive power due to fault or heavy load on it, experiences a voltage collapse. So reserve source of reactive power is required for the stable operation of power system FACTs devices can be used for reactive power management and it is having significant impacts on reliability evaluation of composite power system. Under such circumstances, load shedding is usually last option used to avoid voltage collapse condition. This paper suggests a model to evaluate reliability indices incorporating SVC and TCSC with fuzzy penalty using GA based priority load curtailment. A comparative study is done for the results obtained using SVC and TCSC with and without fuzzy penalty. The proposed algorithms are tested on WSCC RBTS and 24 Bus -IEEE reliability test system.