Determination of Optimal Size and Location of FACTS Devices Using Multi-Objective Function and Combination of Simulated Annealing with Goal Programming Method

In this investigation a novel approach is presented to find optimum locations and capacity of FACTS devices in a power system using multi-objective function. TCSC and SVC are utilized as FACTS devices in this study and the objectives are: active power loss reduction, new FACTS devices cost reduction, robustifying the security margin against voltage collapse, network loadability enhancement, and voltage deviation reduction of the power system. Operational and control constraints as well as load constraints are considered for optimum devices allocation. In this study a goal attainment method based on simulated annealing is used to prevent any approximation due to conventional linearization and also to approach the global optimum. A standard IEEE 14-bus test system is used to validate the performance and effectiveness of the proposed method.