Dynamic Stability Analysis of 8 Bus Systems for Different Contingencies

In modern practical power systems, dynamic stability is mainly a problem of insufficient damping of oscillations. The time frame of interest in dynamic stability studies is of the order of 10 to 30 s following a disturbance. Because of the high dimensionality and complication of stability problems, it is essential to make simplifying assumptions and to analyze specific types of problems using the right degree of detail of system representation. So far in this paper simple 8 Bus power system is considered with small disturbance. Then load flow and dynamic stability analysis is done using MiPowerr By considering the disturbance at generator of bus no 2. graphs for change in bus voltage, change in machine angle and change in speed of machine is plotted against time and discuss the effect of small disturbance on synchronism of generator .after that graph is plotted for different contingencies.