... test system for tow cases with and without FACTS shows that the placement of UPFC devices to improvement in security, reduction in losses of power system, minimizing the installation cost of UPFC ... S.Jazebi optimal Multi-type FACTS Allocation using Genetic Algorithm to improve power system security “ 9781-4244-1933-3/08/$25.00©2008 IEEE L.Erlich, G.Stamtsis, Y.luo, Optimal choice and allocation ... “Application of RGA to optimal choice and allocation of UPFC for voltage security enhancement in deregulated power system International conference on energy & environmental systems, Greece, May...