Improvement of power system security by optimal location of FACTs devices using sensitivity approach

Abstract

In power system, often lead to operating limits because increased transaction on system, so system no longer remains in the secure operating region. For the system security enhancement, the FACTs controllers play an important role. So, it is necessary to find the optimal location of these controllers because of their high capital investment. A sensitivity based approach has been used to decide optimal location of FACTs devices. In this paper the optimal location of FACTs device for base case of 5-bus system using sensitivity approach has been found. In contingency ranking active power performance index is found for every contingency and to select most server line which have highest PIp value. At last optimal location of FACTs devices using sensitivity approach has been obtained for each outage line which has highest PIp value and by simulation results analysis verified that overloading reduces for each line after placing FACTs devices, so power system security can be enhanced.