Enhancement of Transient Stability in a 9 Bus System using Matrix Converter Based UPFC

Due to the increase in population, the power demand also increases and as a result we are in a situation to commission new power plants and transmission lines. The right of way and higher cost incurred in installing new transmission lines forced us to use the transmission lines up to its higher loadable limit. The loading limit of transmission lines up to steady state stability limit is not allowed by transient stability limits. In order to utilize the lines up to its maximum, the transient stability need to be improved. In this paper the transient stability of IEEE nine bus system is studied under severe disturbance in MATLAB-Simulink environment. ANN based controller is employed to control the matrix converter based UPFC and the results obtained with and without UPFC is compared.