In this paper an approach is devised to represent, and study the behavior of, nonlinear
dynamic systems using general nonlinear modal representation. This approach is shown to …

Global hydropower growth continues to accelerate with 25% of total capacity installed in just
the last 10 years. This accelerating expansion and the important storage facility hydropower …

This letter develops a novel data-driven technique to compute the participation factors for
nonlinear systems based on the Koopman mode decomposition. Provided that certain …

The Francis hydro-turbine generator unit (FHTGU) is a typical nonlinear system with the
coupling hydraulic, mechanical and electric subsystems. It is a challenge to understand the …

This paper presents a novel extended modal series method for solving the infinite horizon
optimal control problem of nonlinear interconnected large‐scale dynamic systems. In this …

Because of the low inertia of dc microgrids, system state variables are easily changed
acutely after being disturbed. Hence, dc microgrids meet the serious transient stability issues …

With the development of the energy structure of the power system, the characterization of the
observed oscillation in the power system has steadily evolved. With the increasingly high …

Kalman filter and its different variants are commonly used as optimal methods for fault
detection in various types of system components. In this paper, a newly introduced type of …

Complex phenomena such as prolongedly undamped ultra-low frequency oscillation
(ULFO) and eigenmode re-excitation are observed in the simulations of hydroelectric power …

In large dynamical systems subjected to noise or forced oscillations, disturbances constantly
arise over time. In this case, the small-signal stability is determined by the energy of …