Stability and nonlinear dynamics in power systems

Power systems are characterized by nonlinear dynamics, and unusual and unexpected behavior has been observed in both simple and complex networks. System behavior is expected to become increasingly complicated because of such factors as greater interconnection, the implementation of high-speed electronic power control devices and wheeling requirements. The author describes how, because other nonlinear systems are known to exhibit chaotic behavior, exploratory research is being conducted to determine if the potential for chaos exists in power networks and, if so, how to avoid or control such behavior. By increasing the fundamental understanding of power system dynamics, these investigations could lead to substantial economic benefits. They could reduce the potential for catastrophic failure as well as allow secure network operation closer to performance margins.<>