Reliability Evaluation of Composite Electric Power Systems Incorporating STATCOM & UPFC

In recent years, growth of load demand increases day by day, but this growth does not happen the same in equipments of power systems and therefore operators have to use maximum available capacity of systems to satisfy load demands. These actions make power systems so unreliable. One of best ways to improve reliability of systems, is using FACTS devices. This paper proposes an optimization model to be use in composite power system reliability evaluation method when employing a static synchronous compensator (STATCOM). Some probabilistic load point indices and system indices have been calculated in this approach. At last some comparisons has been done between the results achieved for STATCOM and UPFC when used in grid and original systems. The effectiveness of the proposed method is demonstrated by applying to the 24 bus-IEEE reliability test system (IEEE-RTS).